The disclosure relates to computer-implemented method and system for generating an optimal view direction of an affected area in a 3D model of intra-oral scan data allowing a dental health care professional to inspect and convey dental assessments in an efficient, fast and optimized manner. In more detail the method and system described herein is configured to estimate the optimal view from which an affected area of a dental site may be displayed on a graphical user interface while allowing automated updates of the view direction to bring the affected site into focus of a graphical user interface.
A computer-implemented method for providing dynamic zoom assistance during scanning process of a dental object is disclosed. The method includes obtaining light information reflected from the dental object inside an oral cavity by scanning the dental object with an intraoral scanner. The method further includes generating a digital 3D model of the dental object based on the obtained light information, displaying, on a graphical user interface, the digital 3D model in a first zoom state. Further, the method includes detecting that, as a result of motion of the intraoral scanner, the generating of the digital 3D model satisfies a criterion, and transitioning from the first zoom state of the digital 3D model to a second zoom state of the digital 3D model based on the detecting step.
A dental scanning system includes an illumination unit including a light source configured to illuminate the dental object; a detector unit including a sensor configured to receive a plurality of two-dimensional images in response to the illumination of the dental object; a processor configured to generate a processed data by processing one or more of the plurality of two-dimensional images, wherein a three-dimensional digital representation of the dental object is generated based on the processed data; a wireless network unit configured to wirelessly connect the dental scanning system to a network including a plurality of network elements including at least one network element configured to receive the processed data; and a network operation module including a session module configured to establish the scanning session by operationally connecting, via the wireless network unit, the dental scanning system with one or more network elements.
G16H 10/60 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
G16H 30/20 - ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
4.
METHOD AND SYSTEM FOR EVALUATING 3D MODELS OF A DENTAL SITUATION
A computer-implemented method for evaluating digital 3D models of teeth is disclosed. The method includes receiving first and second digital 3D models and generating a superimposed digital 3D model by mutually aligning the first and second digital 3D models and displaying a part of the superimposed model including a lesion of a dental condition. The displaying includes arranging a user-adjustable controller to vertically divide the displayed part of the superimposed model into first and second regions, wherein in the first and second regions only a part of the first and second digital 3D models are rendered, respectively; identifying first and second end point points of the lesion in the first and second regions, respectively; and arranging first and second interactive windows with x coordinates less than, or equal to the x coordinates of the first and second end points, respectively.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
G06T 19/20 - Editing of 3D images, e.g. changing shapes or colours, aligning objects or positioning parts
Disclosed is a computer implemented method for generating a dental appliance comprising:
obtaining a first 3D digital surface representation of one or more teeth of a patient;
creating a number of points in 3D space around the 3D digital surface representation,
calculating the shortest distance from each of the points to the 3D digital surface representation;
generating a modified 3D digital surface representation by dilating the surface of the object a defined value by using the calculated distances; and
generating a resulting 3D digital surface representation of the dental appliance by erosion of the modified 3D digital surface representation inwards.
Embodiments relate to obtaining a virtual 3D representation of a patient's dentition, segmenting the virtual 3D representation to obtain first and second segmented tooth representations of neighboring teeth in the patient's dentition. The method can involve determining an initial tooth pose for the first segmented tooth representation using a geometric parameter of the first segmented tooth representation and a geometric parameter of the second segmented tooth representation. A normalized tooth representation of the first segmented tooth representation is obtained by transforming the first segmented tooth representation using the initial tooth pose for the first segmented tooth representation. The normalized tooth representation is then input into a trained neural network to output a correct tooth pose for the first segmented tooth representation.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
According to an embodiment, a method for generating a digital three-dimensional model representing development in dental condition for a tooth is disclosed. The method includes obtaining, at different timepoints, a first digital 3D model of a patient's set of teeth including first texture data and a second digital 3D model of the patient's set of teeth including second texture data. The first digital 3D model including the first texture data and second digital 3D model including the second texture data are placed in a common texture space by uniformizing texture. Lastly, the digital three-dimensional model representing development in dental condition is generated based on a comparison of the first texture data and the second texture data of corresponding regions in the first digital 3D model and the second digital 3D model placed in the common texture space.
The present disclosure relates to a computer-implemented method for identifying a jaw type in a dental scan of a jaw (110). The method comprises obtaining (1102) scan data (204A) of the dental scan from an intraoral scanner (104), analysing (1104) the scan data to identify the jaw type of at least a portion of the dental scan, and generating (1106) a first 3D digital representation of at least a part of the jaw based on the scan data and the identified jaw type associated with at least the portion of the dental scan. The scan data comprises at least one of: gyroscopic data (204B), image data, accelerometer data (204C), compass data, or orientation data. The identified jaw type is associated with one of: a first jaw, a second jaw or a bite scan.
The present disclosure relates to an intraoral scanning system that is configured to generate a 3D representation of a dental object. The system receives signal information from the plurality of sensor elements, wherein the signal information is associated with one or more events at the plurality of sensor elements. The system determines a sequence of events associated with one or more sensor elements from the plurality of sensor elements based on the received signal information, determines position information of the focus element with respect to at least the part of the dental object based on the sequence of events, and generates at least one 3D point associated with at least the part of the dental object for the 3D representation of the dental object based on the position information.
This disclosure relates to an intraoral scanning device configured to perform a scanning of a dental object inside an oral cavity, the device including: one or more electronic units; a cooling system configured to remove heat from the one or more electronic units, the cooling system including a heat exchanger unit and a flow generating unit, wherein at least a part of the flow generating unit is covered by the heat exchanger unit; an air inlet and an air outlet, wherein the air inlet and air outlet are separated by the heat exchanger unit, wherein the flow generating unit is configured to move air between the air inlet and the air outlet and through the heat exchanger unit in a direction mainly perpendicular to a longitudinal axis of the intraoral scanning device.
A handheld intraoral scanner configured to acquire intraoral scan data from a three-dimensional dental object during a scanning session including a scan module, a scan tip configured to be connected to the scan module, and a housing that includes a single piece and including a first opening and a second opening opposite to the first opening, wherein one or both of the first opening and second opening are configured to receive at least a part of the scan module.
G16H 40/63 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for local operation
12.
METHOD FOR DETERMINING OPTICAL PARAMETERS TO BE DISPLAYED ON A THREE-DIMENSIONAL MODEL
A method for determining a plurality of final optical parameters of a dental object in an intraoral cavity includes receiving a plurality of two-dimensional images of the dental object, reconstructing a three-dimensional model of the dental object based on the plurality of two-dimensional images, determining camera positions of the plurality of two-dimensional images relative to the three-dimensional model, and receiving a plurality of optical parameters. The method may further include determining in an iterative manner: a plurality of simulated two-dimensional images of the dental object by inputting the plurality of optical parameters and the camera positions to a differentiable renderer, and multiple loss-values based on a loss function between the plurality of simulated two-dimensional images and the received plurality of two-dimensional images by adjusting the plurality of optical parameters.
An intraoral scanner system and a method for optimizing a 3D model for motion blur and warp includes receiving a 3D model that is determined by averaging intraoral scans of a dental object, determining corresponding sample 3D scan points of the 3D model, determining, based on transformation matrices, adjusted 3D scan points for each of the identified 3D scan points, by minimizing a distance between each of the identified 3D scan points relative to each of the corresponding sample 3D scan points for each of the transformation matrices, assigning different weighting coefficients to the adjusted 3D scan points for each of the identified 3D scan points, and optimizing the 3D model of the dental object based on the adjusted 3D scan points for each of the identified 3D scan points.
Disclosed is a computer implemented method for rendering interactive digital three-dimensional dental models of a patient in a graphical user interface, wherein the graphical user interface is configured with communication tools providing effective, clear and understandable communication to the patient being examined.
The disclosure relates to an intraoral scanner battery charger that includes two or more battery slots configured to receive an intraoral scanner battery, wherein each of the two or more battery slots includes a charging interface that is configured to an intraoral scanner battery interface of an intraoral scanner. The charging interface is configured to transfer a charging current to the intraoral scanner battery. The charger further includes a processor unit configured to control the charging current based on a prioritized charging algorithm. The prioritized charging algorithm includes transferring a first charging current to a first intraoral scanner battery and a second charging current to a second intraoral scanner battery, and wherein the first charging current is higher than the second charging current during a charging period, and during a subsequent charging period, the first charging current is lower than the second charging current.
According to an embodiment, a dental system and a method of securing communication for a user application installed on an external device of the dental system. The securing communication for the user application includes obtaining challenge data in the server device; transmitting the challenge data from the server device to the user application installed on the external device; transmitting a challenge request including the challenge data from the user application to the intraoral scanning device; receiving a challenge response comprising response data from the intraoral scanning device; forwarding the response data from the user application to the server device; verifying the response data in the server device based on the challenge data; and approving the user application in the server device if verifying the response data is successful.
G16H 30/20 - ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
G16H 10/60 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
An intraoral scanning device is configured to acquire intraoral scan data from a three-dimensional dental object. The intraoral scanning device includes a processing unit configured to process intraoral scan data and provide 2D image data and/or 3D image data, a memory, and a wireless interface configured to transmit the 2D image data and/or the 3D image data, wherein the processing unit is configured to receive a mode request via the wireless interface, the mode request is one or more of a service mode request for a service mode, a customization mode request, an upgrade mode request and a debug mode request, wherein the service mode is characterized in that a firmware part of the memory is writable, authenticate the mode request; and place the intraoral scanning device into the requested mode if authentication of the mode request succeeds.
G16H 30/20 - ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
G16H 10/65 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records stored on portable record carriers, e.g. on smartcards, RFID tags or CD
H04L 9/32 - Arrangements for secret or secure communicationsNetwork security protocols including means for verifying the identity or authority of a user of the system
A computer-implemented method includes receiving, in a common 3D space, a first digital 3D model representative of the dental situation at a first time, and a second digital 3D model representative of the dental situation at a second time, the second time being later than the first time. The method further includes displaying a transition of a tooth of the first digital 3D model into a corresponding tooth of the second digital 3D model, wherein the displaying includes aligning the tooth and the corresponding tooth at an intermediate position between the tooth and the corresponding tooth, generating an adapter tooth based on the shape of the tooth and the shape of the corresponding tooth, and mapping the adapter tooth to the corresponding tooth to obtain the adapter tooth at a destination position.
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
Disclosed is a method and system of evaluating a dental preparation surface, including obtaining a digital oral situation and/or a portion thereof including a preparation surface. evaluating an attainable thickness based on the preparation surface and surroundings and comparing the attainable thickness to minimum thickness.
The present disclosure relates to an intraoral scanner (102) that is configured to perform an intraoral scanning of a dental object. The intraoral scanner includes a housing (104) defining an interior space (106), electronic components (112A, 112B, 112C and 112D) arranged within the interior space, and a heat spreader (108) arranged within the interior space between the electronic components and the housing. The heat spreader has a first surface (108A) arranged in vicinity of the electronic components and a second surface (108B) arranged in vicinity of the housing. The second surface is separated from housing with first predefined distance defining a first airgap (110) therebetween. The heat spreader transfers heat in a first direction and isolates the transfer of the heat in a second direction. The first direction is parallel to the first surface and the second direction is perpendicular to the first surface.
A61B 1/24 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth
This disclosure relates to a computer-implemented method of reconstructing a portion of a three-dimensional (3D) representation of at least a part of a jaw, the method comprising the steps of obtaining and storing a stream of 3D frames during a live scanning session of the jaw, wherein each 3D frame comprises data describing at least the geometry of at least a part of the jaw, processing the stream of 3D frames, storing the output of the processing, during the live scanning, reconstructing the 3D representation of at last a part of the jaw based on the processed 3D frames and based on an input signal received after the live scanning, reconstructing the portion of the 3D representation of at least a part of the jaw based on the stored stream of 3D frames and output of the processing stored during the live scanning.
An intraoral scanner includes a projector unit configured to emit light at least onto a dental object of a patient; an image sensor configured to acquire reflected light from at least the dental object; a battery for powering the intraoral scanner; a processor unit configured to process the reflected light into one or more 2D images and/or 3D images; a wireless interface configured to communicate with an external device the one or more 2D images and/or 3D images, a motion sensor configured to sense a motion of the intraoral scanner; a timer unit; and a power management unit configured to reduce the power consumption of the intraoral scanner based on a motion signal provided by the motion sensor and a timer signal provided by the timer unit.
An intraoral scanner includes a projector unit configured to emit light at least onto a dental object of a patient; an image sensor configured to acquire reflected light from at least the dental object; a battery for powering the intraoral scanner; a processor unit configured to process the reflected light into one or more 2D images and/or 3D images; a wireless interface configured to communicate with an external device the one or more 2D images and/or 3D images, a motion sensor configured to sense a motion of the intraoral scanner; a timer unit; and a power management unit configured to reduce the power consumption of the intraoral scanner based on a motion signal provided by the motion sensor and a timer signal provided by the timer unit.
Buchanan
Embodiments relate to an intraoral scanning device that may include a processing unit configured to process intraoral scan data and provide 2D image data and/or 3D image data, a wireless interface configured for transmitting the 2D image data and/or the 3D image data, and a memory. The processing unit may be configured to receive a linking request for a session via the wireless interface, obtain a session identifier, transmit, via the wireless interface, a linking response. Furthermore, the processing unit may be configured to receive, via the wireless interface, an authentication message, select an intraoral scanning device key from a plurality of intraoral scanning device keys in the memory unit based on an authentication key identifier, verify client device data based on the selected intraoral scanning device key, and terminate the session if the verification fails.
G16H 30/20 - ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
G16H 40/67 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for remote operation
H04W 12/069 - Authentication using certificates or pre-shared keys
The disclosure relates to a 3D scanner system for scanning an object of an oral cavity of a patient during a scanning session. The scanner system comprises an intraoral scanner. The intraoral scanner comprises one or more cameras configured for capturing images of the object for the provision of image data. The intraoral scanner comprises an outer shell made in one piece, the outer shell having an internal surface and an external surface. The intraoral scanner comprises a user interface configured for controlling one or more processes of the scanning session, wherein the user interface comprises one or more force sensor(s) arranged at the internal surface to provide a touch sensitive zone of the external surface of the outer shell, the one or more force sensor(s) being configured for detecting two or more levels of force applied by a user touching external surface of the touch sensitive zone. The scanner system comprises one or more processors configured to generate a 3D representation of the object based on the image data.
A computer-implemented method for generating an edge curve to facilitate manufacture of at least a portion of a dental device includes identifying at least one tooth reference point for each of at least two teeth on a dental model; identifying at least one offset point corresponding to each of said at least one tooth reference points such that said at least one offset point is on a gingival surface of said dental model and located outside an interproximal area; and generating said edge curve by connecting the offset points such that the edge curve is outside the interproximal area and on the gingival surface.
G06T 11/20 - Drawing from basic elements, e.g. lines or circles
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
The present disclosure relates to systems and methods for generating a digital representation of a three-dimensional (3D) object. In particular, the disclosure relates to a dental scanning system for acquiring images of the object and for generating the digital representation of the object. One embodiment relates to a dental scanning system for scanning a dental object, comprising an intraoral 3D scanning device comprising at least one projector unit configured to project a light pattern along a projector optical axis, the light pattern comprising a plurality of pattern features; one or more cameras having at least partly overlapping fields of view along different camera optical axes (and along the projector optical axis), each of the cameras comprising an image sensor, wherein the system further comprises one or more processors configured to generate a digital three-dimensional representation of the dental object based on triangulation.
An aspect of the present disclosure is to provide a computer implemented method that performs volumetric operations faster and with reduced memory requirements. In an embodiment, this efficiency is achieved by representing, only partially, a digital 3D volumetric space of a digital 3D dental data with subgrids. It is an advantage to avoid computations in parts of a digital 3D volumetric space because execution times or memory requirements or both may be smaller. This may further be enhanced by the fact that the disclosure operates at subgrids level as opposed to individual cell level.
The present disclosure relates to an intraoral scanning system configured to determine a three-dimensional model of an oral cavity of a patient. The system includes a tip housing configured to be inserted at least partially into an oral cavity of a patient. The tip housing includes a scan window arranged at an aperture of the tip housing, and wherein the scan window includes an inner surface arranged within the tip housing, and an infrared light source configured to emit infrared light towards the oral cavity via the scan window. The system includes a visible light source configured to emit visible light towards the oral cavity via the scan window, an image sensor unit configured to capture reflection of the emitted visible light and/or the emitted infrared light from the dental arch, and one or more processors configured to determine the three-dimensional model based on the captured visible light and to determine infrared images based on the captured infrared light. The scan window includes a window coating on at least the inner surface, and wherein the window coating is configured to reduce reflections of the infrared light and reflections of the visible light from the inner surface.
The present disclosure relates to an intraoral scanner system that is configured to display a feedback signal on a three-dimensional (3D) model of a dental object, wherein the system includes at least one projector unit configured to emit a probe light with a plurality of configurations in the form of an illumination pattern; at least one image sensor unit accommodating an array of sensor elements configured to provide two-dimensional (2D) images with three-dimensional (3D) data based on captured reflections of the probe light from a dental object, one or more processors configured to: determine a 3D model of the dental object by stitching the 2D images, update the 3D model by stitching 2D images provided by the at least one image sensor unit onto the 3D model, determine a quality level of the data in the 3D model at a position in the 3D model, and determine a feedback signal that includes the quality level of data in the 3D model and a corresponding position of the data in the 3D model, determine a feedback trigger signal when the one or more processors is not updating the 3D model. The system further includes a displaying unit configured to display in real-time the 3D model, and the displaying unit is further configured to display when the feedback trigger signal is determined, the quality level of the data at the position on the 3D model determined by the feedback signal.
The present disclosure relates to an intraoral scanning system configured to determine 3D data of a dental object in dental object. The intraoral scanning system comprising a projector unit configured to emit a first visible light, a second visible light and infrared light during a scan sequence, wherein the emitted first visible light includes an illumination pattern, an image sensor unit configured to acquire two-dimensional visible images based on the first visible light and the second visible light and/or two-dimensional infrared images based on the infrared light from the dental object, and one or more processors configured to control the projector unit and/or the image sensor unit according to a plurality of scan sequence schedules, wherein each of the plurality of scan sequence schedules includes timing of the projector unit and/or the image sensor. The one or more processors is configured to determine a 3D model of the dental object based on the two-dimensional visible images that includes the first visible light, and wherein the one or more processors is configured to shift between each of the plurality of scan sequence schedules.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 1/04 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor combined with photographic or television appliances
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
A method for identifying islands of interest on a 3D dental model includes receiving at least a first dental 3D scan data, generating the 3D dental model based on the received 3D data. Method further includes identifying a plurality of regions on the 3D dental model, each region indicating presence of at least one dental condition. A severity factor value for each region is determined. The method further includes marking, on the 3D dental model, each region of the plurality of regions with a visual indicator, wherein the visual indicator is selected based on the determined severity factor value for said region. A plurality of islands is then obtained by grouping the plurality of regions on the 3D dental model (100, 300) such that each island includes neighboring regions indicating presence of the at least one dental condition. The 3D dental model is then displayed.
G06F 3/04815 - Interaction with a metaphor-based environment or interaction object displayed as three-dimensional, e.g. changing the user viewpoint with respect to the environment or object
G06F 3/0482 - Interaction with lists of selectable items, e.g. menus
G06T 17/20 - Wire-frame description, e.g. polygonalisation or tessellation
G16H 50/50 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for simulation or modelling of medical disorders
Disclosed is a method for establishing a wireless operational connection between an intraoral scanner and a scanning station. The method comprises detecting, by the intraoral scanner, a user interaction indicative of an intention of establishing a wireless operational connection. The method comprises based on the detection of the user interaction indicative of an intention of establishing a wireless operational connection, broadcasting, by the intraoral scanner, a connection request. The method comprises receiving, by the scanning station, the connection request. The method comprises outputting, by the scanning station, an indication that the connection request has been received to the user.
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
The present disclosure relates to an intraoral scanning system configured to provide a first composed scan information. The system includes a handheld intraoral scanning device that includes a projector unit configured to emit light with different wavelengths during time periods onto at least a dental object, wherein the different wavelengths include a infrared wavelength and a visible wavelength, and an image sensor unit configured to capture one or more visible images that each includes visible light information and to capture internal images that each includes internal light information, and wherein the visible light information includes a plurality of color channels. The system further comprises one or more processors at least operably connected to the image sensor unit. The one or more processors is configured to receive the visible light information and the internal light information, determine internal structure information of the dental object from the internal light information, assign a weight coefficient to each of the plurality of color channels of the visible light information, determine a first composed scan information that includes a difference between the internal structure information and one or more color channels of the plurality of color channels with assigned weight coefficients, and enhance distinguishability of one or more internal structures of the dental object in the first composed scan information by adjusting one or more of the weight coefficients of the one or more color channels.
A method for generating a digital 3D representation of at least a part of an intraoral cavity, the method including recording a plurality of views containing surface data representing at least the geometry of surface points of the part of the intraoral cavity using an intraoral scanner; determining a weight for each surface point at least partly based on scores that are measures of belief of that surface point representing a particular type of surface; executing a stitching algorithm that performs weighted stitching of the surface points in said plurality of views to generate the digital 3D representation based on the determined weights; wherein the scores for the surface points are found by at least one score-finding algorithm that takes as input at least the geometry part of the surface data for that surface point and surface data for points in a neighbourhood of that surface point.
Disclosed is a method for monitoring changes in jaw motion over time. A primary relative jaw motion data set and a secondary relative jaw motion data set are obtained using an intraoral scanner. The method further comprises a computer implemented method, where the computer implemented method comprises the steps of, receiving the primary relative jaw motion data set and the secondary relative jaw motion data set; obtaining a model class representing desired and/or regularising properties of articulation; obtaining a primary model parameters by fitting the primary relative jaw motion data set to the model class; obtaining a secondary model parameters by fitting the secondary relative jaw motion data set to the model class; determining monitoring information based on comparing the primary model parameters with the secondary model parameters, and displaying the monitoring information.
A61B 6/51 - Apparatus or devices for radiation diagnosisApparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body partsApparatus or devices for radiation diagnosisApparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific clinical applications for dentistry
A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates.
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
A61B 5/107 - Measuring physical dimensions, e.g. size of the entire body or parts thereof
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
39.
METHOD FOR GRAPHICALLY PRESENTING A PLURALITY OF SCANS
Disclosed is a system and method for presenting a graphical representation of an oral situation of a patient over time. In particular the system and method relates to a method of presenting a plurality of scans taken over time in manner where the focus on the changes in the oral situation of the patient is maintained.
Disclosed is a method of storing information in a mesh, including tessellating a plurality of input patches of the mesh, serializing vertices of the tessellated input patches, calculating a value for each vertex, serializing the values according to the serialization of the vertices; and storing the serialized values.
The presented method relates to a lesion detection method utilizing intra-oral scan data of 3D geometries of a mouth. The method presented is configured to detect lesions, such as caries lesions in a discretized 3D geometry generated from the intra-oral scan data, using a trained learning model. Furthermore, the method(s) presented is configured to perform post- processing of output from the learning model to generate accurate and precise lesions detections and to display the detected lesions in the input discretized 3D geometry.
A computer-implemented method for generating a 2D or 3D object, including training an autoencoder on a first set of training data to identify a first set of latent variables and generate a first set of output data; training an hourglass predictor on a second set of training data, where the hourglass predictor encoder converts a set of related but different training input data to a second set of latent variables, which decode into a second set of output data of the same type as the first set of output data; and using the hourglass predictor to predict a 2D or 3D object of the same type as the first set of output data based on a 2D or 3D object of the same type as the second set of input data.
G06T 17/20 - Wire-frame description, e.g. polygonalisation or tessellation
A61C 7/00 - Orthodontics, i.e. obtaining or maintaining the desired position of teeth, e.g. by straightening, evening, regulating, separating, or by correcting malocclusions
A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates.
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
A61B 5/107 - Measuring physical dimensions, e.g. size of the entire body or parts thereof
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
44.
INTRAORAL SCANNING DEVICE WITH EXTENDED FIELD OF VIEW
The present disclosure relates to an intraoral scanning device for scanning a dental object, the scanning device including an elongated probe defining a longitudinal axis of the scanning device; one or more scan units, each scan unit including: at least one projector unit configured to project a light pattern onto a surface of the dental object, wherein the projector unit defines a projector optical axis; and at least one camera including an image sensor for acquiring images, wherein the at least one camera defines a camera optical axis, wherein at least one of the scan units further includes a reflecting element, wherein each scan unit defines a field of view. In particular, the present disclosure relates to an intraoral scanning device having an extended field of view.
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 1/24 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth
45.
IMPROVED GRAPH NEURAL NETWORK MODEL FOR DENTAL THREE-DIMENSIONAL MODELS
A computer-implemented method for training a graph neural network (GNN) model (106) is provided. The method includes generating a graph (404, 406) corresponding to a three- dimensional (3D) mesh (302) based on a facet mapping technique wherein the 3D mesh (302) is associated with a surface information of at least a portion of a dental arch. Further, ground truth data indicating features of the 3D mesh (302) to be predicted by the GNN model (106) is obtained. The graph (404, 406) of the 3D mesh (302) and the ground truth data are provided, as an input, to the GNN model (106) wherein the GNN model (106) comprises a set of convolution layers. Furthermore, a set of weights is applied to each convolution layer of the set of convolution layers, wherein the set of weights corresponds to differences between features of nodes of the graph (404, 406). The method further comprises receiving, as an output of the GNN model (106) with the applied set of weights, output data indicating predicted features of the 3D mesh (302). The method additionally comprises iteratively updating trainable parameters of the GNN model (106) based on comparing the output data to the ground truth data until a predefined loss function threshold is reached.
The present disclosure relates to systems and methods for generating a digital representation of a three-dimensional (3D) object. In particular, the disclosure relates to a dental scanning system for acquiring images of the object and for generating the digital representation of the object. One embodiment relates to a dental scanning system for scanning a dental object, comprising an intraoral 3D scanning device comprising at least one projector unit configured to project a light pattern along a projector optical axis, the light pattern comprising a plurality of pattern features; one or more cameras having at least partly overlapping fields of view along different camera optical axes (and along the projector optical axis), each of the cameras comprising an image sensor, wherein the system further comprises one or more processors configured to generate a digital three-dimensional representation of the dental object based on triangulation.
An intraoral scanner includes a housing having a tip end and a distal end, and at least one scan unit arranged inside the housing and disposed proximate to the tip end. The at least one scan unit includes a projector unit configured to emit light onto a dental object. An image unit is configured to acquire reflected light of the dental object. Three-dimensional (3D) data of the dental object is determined based on the reflected light. The scanner also includes a heat sink arranged proximate to the distal end, and at least one heat guide extends in a longitudinal direction and has a first end connected to the at least one scan unit and a second end connected to the heat sink. The at least one heat guide facilitates a transfer of the heat from the at least one scan unit to the heat sink.
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 1/12 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor with cooling or rinsing arrangements
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
48.
METHOD AND SYSTEM FOR MEASURING PERIODONTAL POCKET DEPTH
A system for measuring a depth of a periodontal pocket defined by a gap between a tooth and gingiva includes a frame, one camera, and a processor. The frame is configured to be worn by a user. The camera is configured to capture at least one 2D image of an intraoral target area. The at least one 2D image includes a representation of at least a part of the tooth, a gingiva margin defined by a section of the gingiva adjacent to the at least a part of the tooth, and a probe tip when the probe tip is inserted into the periodontal pocket. The processor is configured to receive the captured at least one 2D image and to determine an insertion length of the probe tip in the periodontal pocket. The determined insertion length represents the depth of the periodontal pocket.
A61C 19/04 - Measuring instruments specially adapted for dentistry
A61B 1/24 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth
G06T 7/55 - Depth or shape recovery from multiple images
H04N 13/207 - Image signal generators using stereoscopic image cameras using a single 2D image sensor
A method for manufacturing/producing a dental restoration for a patient, where the method includes: obtaining a 3D scan of at least a restoration site of the patient's mouth, where the manufactured dental restoration is adapted for fitting to the restoration site; obtaining a computer-aided design (CAD design) of the dental restoration; milling the restoration from a material, where the restoration is milled both on an inside surface configured for fitting to the shape of the restoration site of the patient's mouth and on an outside surface, where the milling is according to the obtained CAD design; transferring the milled restoration to a retention means providing a fixed known position of the restoration relative to a post-processing machinery, where the restoration is retained on the inside surface, such that the outside surface of the restoration is approachable/free/accessible; and performing post-processing of the outside surface of the restoration.
Disclosed herein is method for designing a dental prosthesis and a positioning guide for placing the dental prosthesis on implants in the jaw while maintain proper occlusion. In particular the method relates to a method for designing the dental prosthesis and the positioning guide prior to implant placement. Accordingly, the disclosure relates to a method and a kit of components suited for one-day implant surgery thereby reducing the time the patient spend in the dentist chair.
According to an embodiment, a computer implemented method and a scanner system are disclosed. The computer implemented method for updating a current digital 3D scan representing the surface of a physical object with an at least one new 3D scan, where the updating of the current digital 3D scan provides an updated digital 3D scan representation of the surface of the physical object is disclosed. The computer implemented method may comprise obtaining the current digital 3D scan, obtaining the at least one new digital 3D scan, determining an inconsistent digital 3D scan, where at least a part of the new digital 3D scan does not overlap with at least a part of the current digital 3D scan, and creating the updated digital 3D scan, which represent the physical object by applying the inconsistent digital 3D scan to the current digital 3D scan.
The present disclosure relates to an intraoral scanning system that is configured to determine three-dimensional surface model and a plurality of focused images. The intraoral scanning system comprising a projector unit configured to emit light onto a dental object, wherein the emitted light includes an infrared wavelength and structured light that includes a first visible wavelength; a first image sensor unit including; a first image sensor configured to acquire first reflected light from the dental object, wherein the first reflected light includes the infrared wavelength, and wherein the first image sensor includes an array of pixels, a micro-lens array arranged in front of the array of pixels and configured to convey the first reflected light to the array of pixels, wherein one or more micro lenses of the micro-lens array directs the first reflected light to one or more pixels of the array of pixels; a second image sensor unit including; a second image sensor configured to acquire second reflected light from the dental object, wherein the second reflected light includes the structured light, a processor unit configured to determine; three-dimensional (3D) data of the dental object based on the second reflected light, a three-dimensional (3D) surface model of the dental object by merging the 3D data, and a plurality of focused images at different focus depth into the dental object by selection of a set of pixels from the array of pixels associated with each microlens of the micro-lens array, and wherein the processor unit is configured to align a position of each of the plurality of focused images to a position in the 3D surface model based on the 3D data.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
A61B 1/06 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor with illuminating arrangements
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
53.
AN INTRAORAL SCANNING SYSTEM WITH AN INFRARED LIGHT SOURCE IN A TIP HOUSING
The present disclosure relates to an intraoral scanning system that comprises a tip housing configured to be inserted at least partially into an oral cavity of a patient. The tip housing includes a scanning window, an infrared light source configured to emit infrared light towards the oral cavity via the scanning window, a first interface unit configured to receive electrical power from a power source of the intraoral scanning system. The first interface unit is configured to be connected to a first heating conduction path, and wherein the first interface unit is configured to control a level of electrical heat power in the first heating conduction path, and wherein the first heating conduction path is configured to transfer a generated heat to the scanning window based on the electrical heat power, and a secondary conduction path, and wherein the first interface unit is configured to supply power to the infrared light source via the secondary conduction path, wherein the first heating conduction path and the secondary conduction path are at least partially in parallel within the tip housing.
A61B 1/247 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth with means for viewing areas outside the direct line of sight, e.g. dentists' mirrors
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 1/253 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth with means for viewing areas outside the direct line of sight, e.g. dentists' mirrors with means for preventing fogging
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
A61B 1/24 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth
Diagnostic and dental apparatus and instruments; optical and
x-ray scanners for diagnostic, dental, odontologic,
orthodontic purposes and for dentistry; scanners for
intra-oral optical dental purposes; dental optical coherence
tomography (OCT) scanners; intraoral scanners for use in the
detection and visual monitoring of surface caries, tooth
wear, gingival recession, plaque, and proximal caries.
A method includes obtaining a first and a second tooth digital representation of a tooth; subdividing each of the representations into two sub-regions; applying an alignment process for aligning a sub-region of the first digital representation with a sub-region of the second digital representation, wherein the sub-region of the first digital representation and the corresponding sub-region of the second digital representation correspond to a part of the tooth; and aligning the first representation to the second representation. A system for acquisition and processing of a tooth digital representation includes one input peripheral configured to generate image data of a jaw or a tooth; one output peripheral configured to display one digital representation of jaw or teeth and to provide visual data of the quality of the digital representation alignment; and one processing unit configured to generate digital representations of jaws or teeth and perform alignment of teeth.
According to an embodiment, a dental scanning system and a computer implemented method of generating a training set for a machine learning model are disclosed. According to a further embodiment, a dental scanning system and a computer implemented method for providing a diagnostic data set of a patient are disclosed.
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 1/24 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth
G06V 10/26 - Segmentation of patterns in the image fieldCutting or merging of image elements to establish the pattern region, e.g. clustering-based techniquesDetection of occlusion
G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
According to an embodiment, a method for generating a digital data set for fabricating a physical dental bleaching tray useable to deliver an bleaching agent is disclosed. The method includes obtaining a three-dimensional digital representation of a patient's dentition including teeth and gingiva; segmenting two or more teeth into individual tooth; identifying a facial surface of at least one of the segmented tooth; defining a facial surface portion including a surface area that is at least partly bound by a virtual boundary that is non-interfacing with the gingiva; generating a modified three-dimensional digital representation using the defined facial surface portion; and generating, based on the modified three-dimensional digital representation, the digital data set configured to be used in fabricating the physical dental bleaching tray.
(1) Diagnostic and dental apparatus and instruments; optical and x-ray scanners for diagnostic, dental, odontologic, orthodontic purposes and for dentistry; scanners for intra-oral optical dental purposes; dental optical coherence tomography (OCT) scanners; intraoral scanners for use in the detection and visual monitoring of surface caries, tooth wear, gingival recession, plaque, and proximal caries.
Diagnostic and dental apparatus and instruments; optical and x-ray scanners for diagnostic, dental, odontologic, orthodontic purposes and for dentistry; scanners for intra-oral optical dental purposes; dental optical coherence tomography (OCT) scanners; intraoral scanners for use in the detection and visual monitoring of surface caries, tooth wear, gingival recession, plaque, and proximal caries.
60.
DETECTION OF A MOVABLE OBJECT WHEN 3D SCANNING A RIGID OBJECT
Detecting a movable object in a location includes providing a first 3D representation of at least part of a surface; providing a second 3D representation of at least part of the surface; determining for the first 3D representation a first excluded volume in space where no surface can be present; determining for the second 3D representation a second excluded volume in space where no surface can be present; if a portion of the surface in the first 3D representation is located in space in the second excluded volume, the portion of the surface in the first 3D representation is disregarded in the generation of the virtual 3D model, and/or if a portion of the surface in the second 3D representation is located in space in the first excluded volume, the portion of the surface in the second 3D representation is disregarded in the generation of the virtual 3D model.
A computer-implemented method for aligning digital three- dimensional models of a patient's dentition is disclosed. The method comprises receiving a first digital three-dimensional model (101) of the patient's dentition comprising a first plurality of tooth regions and receiving a second digital three- dimensional model (102) of the patient's dentition comprising a second plurality of tooth regions. The method further comprises obtaining closest tooth regions by identifying, for each tooth region of the first plurality of tooth regions, a closest tooth region of the second plurality of tooth regions. Further, the method comprises identifying corresponding tooth regions (200) of the first digital three-dimensional model (101) and the second digital three-dimensional model (102) by identifying, from the closest tooth regions, those closest tooth regions with a relative deviation in a surface feature lower than a threshold for the surface feature, wherein the surface feature is a surface normal and wherein the threshold is a threshold for surface normal selected in a range of 5 degrees to 30 degrees. Additionally, the method comprises aligning the first digital three-dimensional model (101) and the second digital three- dimensional model (102) by minimizing distances between the identified corresponding tooth regions (200), and displaying the aligned first digital three-dimensional model (101) and the second digital three-dimensional model (102).
A method of designing a virtual 3D model of a dental restoration for a target site of a patient's set of teeth, the method including: obtaining a digital 3D representation of the set of teeth, the digital 3D representation including a section corresponding to the target site; determining an insertion path for the dental restoration to the target site; and designing the virtual 3D model of the dental restoration based on the digital 3D representation of the set of teeth, where the designing includes generating an outer surface of the virtual 3D model, where the determined insertion path and the outer surface of the designed virtual 3D model provide that a dental restoration manufactured from the designed virtual 3D model can be moved along the insertion path to the target site.
An intraoral scanning system with wavelength dependent aperture is provided. The intraoral scanning system comprises a lens assembly including a wavelength dependent aperture. The wavelength dependent layer is characterized by a first aperture layer and a second aperture layer. The first aperture layer allows light signals of at least one of: a first wavelength, a second wavelength, or a combination thereof to pass through. The second aperture layer allows light signals of the second wavelength to pass through and blocks light signals of the first wavelength. The intraoral scanning system comprising an image sensor unit for acquiring light signals corresponding to the first wavelength and the second wavelength, and a processor configured to determine 3D data for a dental object based on the acquired light signals of second wavelength and diagnostic data of the dental object based on the acquired light signals of the first wavelength.
A computer-implemented method for aligning a two-dimensional (2D) dental X-ray image (202) with a three-dimensional (3D) dental surface scan (201) is disclosed. The method comprises receiving the two-dimensional dental X-ray image (202) of at least a portion of at least one tooth (200) of a patient, receiving the three-dimensional dental surface scan (201) of the at least portion of the at least one tooth (200) of the patient. Further, the method comprises identifying a location of the two- dimensional dental X-ray image (202) with respect to the three- dimensional dental surface scan (201) by obtaining a simulated X-ray image of the at least portion of the at least one tooth (200) based on the three-dimensional dental surface scan (201) such that an observed intensity in the simulated X-ray image matches the observed intensity in the two-dimensional dental X- ray image (202). Additionally, the method comprises displaying the two-dimensional dental X-ray image (202) and the three- dimensional dental surface scan (201) in a common three- dimensional scene, wherein the two-dimensional dental X-ray image (202) is displayed at the identified location.
A computer-implemented method for improving the accuracy of a three-dimensional (3D) representation of a jaw, the method including obtaining a first digital 3D representation of at least a part of a first jaw; obtaining a second digital 3D representation of at least a part of a second jaw; combining several 3D frames generated for a number of different views of the jaws in occlusion, wherein each 3D frame includes data expressing the geometry of at least a part of the jaws in occlusion; and correcting the first digital 3D representation by adjusting the position of one or more surface points belonging to the first digital 3D representation based on the position of 3D frames associated with the third digital 3D representation, whereby the accuracy of the first digital 3D representation is improved.
Disclosed are methods and digital tools for deriving tooth condition information for a patient's teeth, for populating a digital dental chart with derived tooth condition information, and for generating an electronic data record containing such information.
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
A61B 5/103 - Measuring devices for testing the shape, pattern, size or movement of the body or parts thereof, for diagnostic purposes
A61B 6/51 - Apparatus or devices for radiation diagnosisApparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body partsApparatus or devices for radiation diagnosisApparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific clinical applications for dentistry
G06T 7/32 - Determination of transform parameters for the alignment of images, i.e. image registration using correlation-based methods
G06T 7/70 - Determining position or orientation of objects or cameras
G16H 10/60 - ICT specially adapted for the handling or processing of patient-related medical or healthcare data for patient-specific data, e.g. for electronic patient records
G16H 30/20 - ICT specially adapted for the handling or processing of medical images for handling medical images, e.g. DICOM, HL7 or PACS
G16H 30/40 - ICT specially adapted for the handling or processing of medical images for processing medical images, e.g. editing
G16H 50/20 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for computer-aided diagnosis, e.g. based on medical expert systems
67.
SYSTEM AND METHOD FOR COMPRESSION OF INTRAORAL SCAN DATA
An intraoral scanning system (102) including a handheld intraoral scanning device (104). The handheld intraoral scanning device (104) captures intraoral scan data (110) associated with a user. The intraoral scan data includes texture data (110A) and three-dimensional (3D) data (110B) captured during an intraoral scanning session of the user. The handheld intraoral scanning device (104) generates compressed texture data (112A) associated with the texture data (110A) based on an application of a first compression operation (502) on the texture data (110A). The handheld intraoral scanning device (104) generates compressed 3D data (112B) associated with the 3D data (110B) based on the application of the second compression operation (602) on the 3D data (110B). The handheld intraoral scanning device (104) transmits a combination of the compressed texture data (112A) and the compressed 3D data (112B), as compressed intraoral scan data (112), to one or more client devices (106).
H04N 19/597 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding specially adapted for multi-view video sequence encoding
H04N 19/61 - Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
The present disclosure relates to an intraoral scanning system (102) that is configured to generate an overlay of correlated 2D inner geometry features on a 3D surface model for dental objects. The system is configured to receive visible light information (128) and IR information (130) from one or more sensors and generate a 3D surface model (118) of a dental object (!46) based on the visible light information and generate a plurality of 2D internal feature images (302, 306, 310, 314) based on the visible light information and the IR information, process the plurality of 2D internal feature images to correlate the 2D inner geometry features of the dental object with at least one reference frame (712) of the dental object in the 3D surface model; and output an overlay (120) of the correlated 2D inner geometry features of the dental object on the 3D surface model. The plurality of 2D internal feature images indicates 2D inner geometry features for the dental object.
The present disclosure relates to a 3D scanner system comprising an intraoral scanner comprising: an elongated housing comprising a distal end for being inserted into an oral cavity, wherein the housing comprises an aperture in a sidewall of the distal end of the housing; and a window arranged in the aperture of the housing; and/or a sleeve mounted on the outside of the elongated housing; the 3D scanner system further comprising one or more processors operatively connected to the intraoral scanner, said processors configured to receive one or more two-dimensional images comprising a plurality of pattern features, wherein the images comprises one or more artifacts arising from reflections from the window and/or sleeve; and provide the two-dimensional image(s) as input to a parameterized model trained to determine the position of at least a subset of the pattern features in the image(s), while suppressing or ignoring the artifacts.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Downloadable computer software for use in the field of
dentistry, namely, for use in scanning, measuring and
automated documentation of changes in patients' dentition
over time; downloadable computer software for use in
dentistry, namely, for AI assistive detection and visual
monitoring of surface caries, tooth wear, gingival
recession, plaque, and proximal caries and for enabling the
monitoring and automated documentation of changes in
patients' dentition over time; downloadable computer
software applications for enabling patients to access the
documentation of the status of their dentition and the
changes in their dentition over time; downloadable mobile
applications for retrieving and displaying dental health
information. Software as a service (SaaS) featuring software for use in
the field of dentistry, namely, for use in scanning,
measuring and automated documentation of changes in
patients' dentition over time; software as a service (SaaS)
featuring software for use in dentistry, namely, for AI
assistive detection and visual monitoring of surface caries,
tooth wear, gingival recession, plaque, and proximal caries
and for enabling the monitoring and automated documentation
of changes in patients' dentition over time.
71.
AUTOMATIC ASSESMENT OF SOFT TISSUE RECESSION IN AN ORAL CAVITY
The disclosure generally relates to a computer-implemented method for determining a health state of soft tissue in an oral cavity. In more detail, the method may utilize a trained machine learning model that has been trained on the basis of annotated ground truth data to determine a measure for soft tissue recession in an oral cavity.
G16H 50/20 - ICT specially adapted for medical diagnosis, medical simulation or medical data miningICT specially adapted for detecting, monitoring or modelling epidemics or pandemics for computer-aided diagnosis, e.g. based on medical expert systems
G16H 30/40 - ICT specially adapted for the handling or processing of medical images for processing medical images, e.g. editing
A scanner includes a camera, a light source for generating a probe light incorporating a spatial pattern, an optical system for transmitting the probe light towards the object and for transmitting at least a part of the light returned from the object to the camera, a focus element within the optical system for varying a position of a focus plane of the spatial pattern on the object, unit for obtaining at least one image from said array of sensor elements, unit for evaluating a correlation measure at each focus plane position between at least one image pixel and a weight function, a processor for determining the in-focus position(s) of each of a plurality of image pixels for a range of focus plane positions, or each of a plurality of groups of image pixels for a range of focus plane positions, and transforming in-focus data into 3D real world coordinates.
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
A61B 5/107 - Measuring physical dimensions, e.g. size of the entire body or parts thereof
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
73.
METHOD FOR GENERATING DENTAL MODELS BASED ON AN OBJECTIVE FUNCTION
Disclosed is a computer-implemented method of generating a dental model based on an objective function output, including creating an objective function including at least one quality estimation function which trains at least one machine learning method that generates quality estimation output, and an objective function output is the output of the objective function providing a model as an input data to the objective function and generating model-related objective function output; and modifying the model based on the model-related objective function output to transform the model to a generated model, wherein the generated model is the dental model.
Diagnostic and dental apparatus and instruments; optical and x-ray scanners for diagnostic, dental, odontologic, orthodontic purposes and for dentistry; scanners for intra-oral optical dental purposes; dental optical coherence tomography (OCT) scanners; intraoral scanners for use in the detection and visual monitoring of surface caries, tooth wear, gingival recession, plaque, and proximal caries.
75.
METHOD, DEVICE AND SYSTEM FOR CORRELATING AT LEAST ONE ADDITIONAL 2D-IMAGE TO A 3D-REPRESENTATION OF AT LEAST A PART OF TOOTH
The present disclosure provides a computer-implemented method for correlating at least one infrared 2D-image to a 3D-representation of at least a part of a tooth displayed in a graphical user-interface, of a hand-held scanning device, on a screen, including the steps of: obtaining a first set of 2D-images of the at least part of the tooth; forming a 3D-representation of the at least a part of the tooth from the first set of 2D-images; displaying, in the graphical user-interface, the 3D-representation; obtaining a second set of 2D-images, wherein the second set of 2D images are infrared 2D-images acquired within the at least part of the tooth; displaying, in the user-interface, at least one of the 2D-images from the second set of 2D-images; displaying, in the user-interface, a manipulator configured to change between 2D-images in the second set of 2D-images.
An intraoral scanner system (100) includes a handheld intraoral scanner (101) configured to obtain light information reflected from a dental object (108) inside an oral cavity through a field-of-view (105) of the handheld intraoral scanner (101), one or more processors configured to process the light information and to generate a digital 3D model (103) of the dental object (108) based on the processed light information, and a graphical user interface (102) configured to display the digital 3D model (103). The one or more processors are configured to display in real-time and on the graphical user interface (102) a field-of-view frame (104) representing a position of the field-of-view (105) of the handheld intraoral scanner (101) and generate a correction feedback signal that corresponds to the field-of-view frame (104), and wherein the correction feedback signal includes a suggested correction of the position of the field-of-view (105) of the handheld intraoral scanner (101).
A61B 1/24 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Downloadable computer software for use in the field of dentistry, namely, for use in scanning, measuring and automated documentation of changes in patients' dentition over time; downloadable computer software for use in dentistry, namely, for AI assistive detection and visual monitoring of surface caries, tooth wear, gingival recession, plaque, and proximal caries and for enabling the monitoring and automated documentation of changes in patients' dentition over time; downloadable computer software applications for enabling patients to access the documentation of the status of their dentition and the changes in their dentition over time; downloadable mobile applications for retrieving and displaying dental health information. Software as a service (SaaS) featuring software for use in the field of dentistry, namely, for use in scanning, measuring and automated documentation of changes in patients' dentition over time; software as a service (SaaS) featuring software for use in dentistry, namely, for AI assistive detection and visual monitoring of surface caries, tooth wear, gingival recession, plaque, and proximal caries and for enabling the monitoring and automated documentation of changes in patients' dentition over time.
09 - Scientific and electric apparatus and instruments
42 - Scientific, technological and industrial services, research and design
Goods & Services
Downloadable computer software for use in the field of dentistry, namely, for use in scanning, measuring and automated documentation of changes in patients’ dentition over time; downloadable computer software for use in dentistry, namely, for AI assistive detection and visual monitoring of surface caries, tooth wear, gingival recession, plaque, and proximal caries and for enabling the monitoring and automated documentation of changes in patients’ dentition over time; downloadable computer software applications for enabling patients to access the documentation of the status of their dentition and the changes in their dentition over time; downloadable mobile applications for retrieving and displaying dental health information. Software as a service (SaaS) featuring software for use in the field of dentistry, namely, for use in scanning, measuring and automated documentation of changes in patients’ dentition over time; Software as a service (SaaS) featuring software for use in dentistry, namely, for AI assistive detection and visual monitoring of surface caries, tooth wear, gingival recession, plaque, and proximal caries and for enabling the monitoring and automated documentation of changes in patients’ dentition over time.
79.
Systems And Methods For Designing A Dental Prosthesis
The present disclosure relates to a computer-implemented method for designing a dental prosthesis. A first step of the method may be to obtain a digital 3D representation of a surface, the surface including at least a part of a preparation surface adapted to receive the dental prosthesis, wherein the preparation surface includes a visible part and a hidden part. A second step of the method may be to determine at least one part of a surface of the dental prosthesis using a statistical design model, wherein the at least one part is determined independent of any knowledge or estimate of the hidden part of the preparation surface. A final step of the method may be to design the dental prosthesis wherein the surface of the dental prosthesis includes the at least one part.
G06F 30/27 - Design optimisation, verification or simulation using machine learning, e.g. artificial intelligence, neural networks, support vector machines [SVM] or training a model
Disclosed are a scanner system and a method for recording surface geometry and surface color of an object where both surface geometry information and surface color information fora block of the image sensor pixels at least partly from one 2D image recorded by the color image sensor. A particular application is within dentistry, particularly for intraoral scanning.
G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
42 - Scientific, technological and industrial services, research and design
Goods & Services
Providing temporary use of non-downloadable cloud-based
automated software for use in digital evaluation, design and
manufacturing of custom in-ear pieces.
The present disclosure relates to a 3D scanner system comprising an intraoral scanner comprising: a housing and a transparent window located in the distal end of said housing, wherein the transparent window comprises a pattern of fiducial markers arranged in a predefined arrangement. The intraoral scanner further comprising two or more scan units located in the housing, each scan unit comprising one or more camera units configured for acquiring a set of images, wherein at least a part of the pattern of fiducial markers is imaged by the camera unit(s); and one or more processors configured for comparing the imaged pattern of fiducial markers to the predefined arrangement, whereby a difference may be determined; determining whether a geometric relationship between the scan units and/or the camera units has changed based on the difference; and correcting the geometric relationship in a geometric model of the intraoral scanner based on the difference, whereby the scanner is calibrated.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
G01B 21/04 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
G06T 7/70 - Determining position or orientation of objects or cameras
The present disclosure provides a wireless scanning device, including a scanning housing, including an image detector configured for acquiring 2D-images at a first 2D-frame-rate; and one or more processor(s) coupled to the image detector such that the 2D-images can be processed by the processor(s) to form processed data; a wireless module being coupled to the processor(s) such that the wireless module receives the processed data from the processor(s) and wirelessly transmits the processed data.
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 1/227 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for ears, i.e. otoscopes
A61B 1/24 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth
42 - Scientific, technological and industrial services, research and design
Goods & Services
Providing temporary use of non-downloadable cloud-based automated software for use in digital evaluation, design and manufacturing of custom in-ear pieces, namely, hearing aids, noise protection ear plugs and ear buds, pressure compensating ear plugs and ear buds, ear buds and ear plugs for sleeping, waterproof ear plugs and ear buds, in-ear monitors, in-ear headphones, and in-ear communication headsets
85.
SYSTEMS AND METHODS FOR STREAMING VIDEO FROM A SCANNING SESSION
The present disclosure relates to a dental scanning system for acquiring scan data of a physical three-dimensional dental object during a scanning session. The dental scanning system includes a scanning device and a first processing device for generating a 3D model. The dental scanning system may further include one or more second processing devices for rendering and/or displaying the 3D model. The dental scanning system is preferably suitable for continuously acquiring, processing, and transmitting images such that a video is streamed during the scanning session. The disclosure further relates to methods related to e.g. transmitting digital images in real-time during a scanning session to one or more external processing devices, and methods for generating a digital three-dimensional (3D) model of a dental object and displaying said 3D model remotely in real-time.
G16H 40/67 - ICT specially adapted for the management or administration of healthcare resources or facilitiesICT specially adapted for the management or operation of medical equipment or devices for the operation of medical equipment or devices for remote operation
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 1/24 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor for the mouth, i.e. stomatoscopes, e.g. with tongue depressorsInstruments for opening or keeping open the mouth
A61C 13/34 - Making or working of models, e.g. preliminary castings, trial denturesDowel pins
The present disclosure relates to an intraoral scanning system for providing enhanced internal structure information of teeth by determining a composed scan information. The intraoral scanning system may be configured to provide a composed scan data based on captured visible light information and internal light information. The system may include a handheld intraoral scanning device that includes a projector unit configured to emit light with different wavelengths during time periods onto at least a dental arch, wherein the different wavelengths include at least a near-infrared wavelength and at least a visible wavelength. The handheld intraoral scanning device may further include an image sensor unit configured to capture visible light information and internal light information from at least the dental arch caused by the emitted light at the different wavelengths. The system may further comprise one or more processors operably connected to the image sensor unit, the one or more processors is configured to receive the visible light information and the internal light information, determine, in real time, surface information from the visible light information for generating or updating a three-dimensional (3D) model of the dental arch using the surface information, determine internal structure information of the dental arch from the internal light information, and determine composed scan information including a composition of the internal structure information and the visible light information.
The present disclosure relates to an intraoral scanning system that is configured to determine 3D data of a dental object in an oral cavity. The intraoral scanning system comprising a handheld intraoral scanner, including; a projector unit configured to emit visible light and infrared light, a filter unit configured to receive visible light signals and infrared light signals from at least the dental object caused by the emitted visible light and the emitted infrared light, respectively, and wherein the filter unit is configured to transmit filtered visible light signals and combined filtered light signals, wherein the combined filtered light signals include a combination of a first color light of the visible light signals and infrared light of the infrared light signals, and wherein the filter unit comprising: a plurality of single-color channels configured to output the filtered visible light signals, and a plurality of combined-color channels configured to output the combined filtered light signals. The system further comprises an image sensor unit configured to acquire the filtered visible light signals and the combined filtered light signals, and one or more processors configured to: determine an infrared signal based on a subtraction of the combined filtered light signals with one or more color lights of the filtered visible light signals, and determine the 3D data of the dental object based on at least the filtered visible light signals.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
A61B 1/00 - Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopesIlluminating arrangements therefor
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
The present disclosure relates an intraoral scanning system that is configured to determine a three-dimensional graphical representation of a dental object. The system may comprise a handheld intraoral scanner configured to provide non-visible 2D images and visible sub- scans of a dental object; and one or more processors configured to determine point clouds of the non-visible 2D images and the visible sub-scans, determine a 3D finite element mesh and align the point clouds to the 3D finite element mesh, wherein the 3D finite element mesh includes a plurality of finite elements, and wherein each of the plurality of finite elements includes multiple vertices, determine one or more optical coefficients for each of the plurality of vertices, and wherein the one or more optical coefficients correspond to a dental feature represented by the aligned point clouds; determine a triangle mesh representation of the aligned point clouds that correspond to the visible sub-scans, and wherein the triangle mesh representation includes triangle arranged vertices of the plurality of vertices, determine a tetrahedral mesh representation of the aligned point clouds that correspond to the non-visible 2D images, and wherein the tetrahedral mesh representation includes tetrahedral arranged vertices of the plurality of vertices, and wherein the 3D graphical representation is determined based on the triangle mesh representation and the tetrahedral mesh representation.
A 3D scanner system for detecting and/or visualizing cariogenic regions in teeth based on fluorescence emitted from the teeth, the 3D scanner system including data processing means configured for mapping a representation of fluorescence emitted from the teeth onto the corresponding portion of a digital 3D representation of the teeth to provide a combined digital 3D representation.
The present disclosure relates to an intraoral scanning system configured to determine 3D data of a dental object in an oral cavity. The intraoral scanning system may comprise an intraoral scanner, including; a projector unit configured to emit visible light and infrared light during a scan sequence, an image sensor unit configured to acquire the visible light signals and infrared signals from at least the dental object caused by the emitted visible light and the emitted infrared light, respectively, and one or more processors configured to: control a power of the projector unit such that a first power level of the emitted infrared light during a first time period of the scan sequence is lower than a second power level of the emitted infrared light during a second time period of the scan sequence, and determine 3D data based on the acquired visible light signals during the first time period and to determine an inner region of the dental object based on the acquired infrared signals during the second time period.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
An intraoral scanning system (102) including hand-held intraoral scanner (104), processors (106) and continuous volumetric ML model (108) for generating 3D inner geometry (120) of teeth (306) is provided. Intraoral scanner comprises sensors (214D) to detect NIR and visible light. The processors receive visible light and NIR information from the sensors, generate 3D surface model (118) of the teeth using visible light information, and determine input parameters for the continuous volumetric ML model by capturing 2D NIR images (114) of an internal region of the teeth from the NIR information. Each of the NIR images includes pixels (722) having a casting object. The input parameters comprise spatial location and viewing angle, and the casting object comprises point coordinates (726, 732). The continuous volumetric ML model processes the input parameters to determine an intensity value and a density value of pixels in 3D inner geometry of the 3D surface model.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
A61B 5/00 - Measuring for diagnostic purposes Identification of persons
42 - Scientific, technological and industrial services, research and design
Goods & Services
Providing temporary use of non-downloadable cloud-based automated software for use in digital evaluation, design and manufacturing of custom in-ear pieces.
According to an embodiment a computer-implemented method for detecting dental plaque on a digital 3D model (101) of a dental situation is disclosed. The method comprises receiving, by a processor, the digital 3D model (101) of the dental situation, providing at least a part of the digital 3D model (101) as an input (601) to a trained neural network (600), wherein the at least part of the digital 3D model (101) comprises natural color information and/or geometric information associated with at least one tooth surface of the dental situation. The geometric information comprises a curvature information, a facet normal information, a depth information relating to a virtual camera position and/or an angle between a facet normal and a virtual camera direction. Further, the method comprises obtaining an output (605) from the trained neural network (600) based on the provided input (610), wherein the output (605) comprises a dental plaque parameter associated with the at least one tooth surface, assigning the dental plaque parameter to the at least part of the digital 3D model (101) and displaying the digital 3D model (101) with the dental plaque parameter assigned to the at least part of the digital 3D model (101).
A computer-implemented method for detecting dental plaque on a digital 3D model (101) of a dental situation is disclosed. The method comprises receiving, by a processor, at least a part of the digital 3D model (101) of the dental situation, wherein the at least part of the digital 3D model (101) comprises fluorescence information associated with fluorescence emitted from dental plaque present on teeth of the dental situation. The fluorescence information comprises a red (R) fluorescence signal value and a green (G) fluorescence signal value of at least one unit element of the at least part of the digital 3D model (101). Further, the method comprises detecting a dental plaque parameter (301) on the at least part of the digital 3D model (101) based on the fluorescence information, wherein the dental plaque parameter (301) represents pathogenic plaque present on teeth of the dental situation. Detecting the dental plaque parameter (301) comprises computing a function of the red (R) fluorescence signal value and the green (G) fluorescence signal value for the at least one unit element of the at least part of the digital 3D model (101). Additionally, the method comprises displaying the at least part of the digital 3D model and the detected dental plaque parameter (301).
According to an embodiment, a handheld intraoral scanner system is disclosed. The handheld intraoral scanner system comprises a handheld intraoral scanner and a detachable sleeve configured to be detachably attached to a scan tip of the handheld intraoral scanner. The detachable sleeve comprises a cover part and a window part. The window part comprises a tapered portion. The window part may be injection molded. The detachable sleeve may be formed by two-component injection molding the cover part and the window part. The window part comprises an optical area having a lower birefringence than a relief area located at the tapered portion and comprising an injection site at which a first molten polymer material was injected into a first form, forming the window part. According to an embodiment, a method for injection molding a window part for a detachable sleeve that further comprises a cover part and that is configured to be detachably attached to a handheld intraoral scanner is provided. The method may further comprise two-component injection molding the cover part and the window part together, thereby forming the detachable sleeve.
The present disclosure relates to an intraoral 3D scanner comprising at least one projector unit comprising a light source configured for emitting light; and a pattern generating element configured for generating a pattern of light to be projected onto a surface of an object; wherein the scanner further comprises one or more camera units, operatively coupled to the projector unit, each camera unit comprising an image sensor for capturing one or more image frames, wherein the image sensor comprises a two-dimensional array of pixels arranged in rows and columns, wherein the image sensor is configured for capturing a given image frame by sequentially exposing individual rows within the two-dimensional array of pixels, wherein each row is exposed for a predefined exposure time; wherein the scanner is configured for sequentially switching the light source on and off at a predefined frequency, wherein the light source is turned on for a predefined duration during which all rows are exposed simultaneously.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
According to an embodiment, an intraoral scanner system comprising a handheld intraoral scanner, one or more processors, and a graphical user interface is disclosed. The one or more processors is configured to change an appearance of a digital movable item displayed in the graphical user interface, to reflect an instruction to modify an orientation or design of a digital 3D model of a dental object displayed in the graphical user interface, comprised in a digital element of one or more digital elements displayed in the graphical user interface, when the digital movable item is positioned over the digital element of the one or more digital elements. According to an embodiment, a method is provided for performing the change of the appearance of the digital movable item.
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
The present disclosure relates to a dental scanning system for generating a digital three-dimensional representation of a dental object, the system comprising an intraoral scanning device comprising one or more projector units configured to project a pattern on a surface of the dental object; and two or more cameras configured to acquire one or more sets of images; wherein the scanning system further comprises one or more processors configured to determine one or more image features within each set of images; solve a correspondence problem within each set of images such that points in 3D space are determined based on the image features, wherein said points form a solution to the correspondence problem, wherein the correspondence problem is solved for groups of pattern features; and generate a digital three-dimensional representation of the dental object, wherein the solution to the correspondence problem is used to generate the three-dimensional representation.
A 3D scanner system includes a scanning device capable of recording first and second data sets of a surface of an object when operating in a first configuration and a second configuration, respectively. A measurement unit is configured for measuring a distance from the scanning device to the surface. A control controls an operation of the scanning device based on the distance measured by the measurement unit, where the scanning device operates in the first configuration when the measured distance is within a first range of distances from the surface and the scanning device operates in the second configuration when the measured distance is within a second range of distances; and a data processor is configured to combine one or more first data sets and one or more second data sets to create a combined virtual 3D model of the object surface.
G01B 21/18 - Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring depth
G01B 11/24 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
G01B 11/245 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using a plurality of fixed, simultaneously operating transducers
G01B 11/25 - Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures by projecting a pattern, e.g. moiré fringes, on the object
G01S 17/894 - 3D imaging with simultaneous measurement of time-of-flight at a 2D array of receiver pixels, e.g. time-of-flight cameras or flash lidar
H04N 1/00 - Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmissionDetails thereof
H04N 13/25 - Image signal generators using stereoscopic image cameras using two or more image sensors with different characteristics other than in their location or field of view, e.g. having different resolutions or colour pickup characteristicsImage signal generators using stereoscopic image cameras using image signals from one sensor to control the characteristics of another sensor
