Systems and methods for tracking objects though a traffic control system include a plurality of sensors configured to capture data associated with a traffic location, and a logic device configured to detect one or more objects in the captured data, determine an object location within the captured data, transform each object location to world coordinates associated with one of the plurality of sensors; and track each object location using the world coordinates using prediction and occlusion-based processes. The plurality of sensors may include a visual image sensor, a thermal image sensor, a radar sensor, and/or another sensor. An object localization process includes a trained deep learning process configured to receive captured data from one of the sensors and determine a bounding box surrounding the detected object and output a classification of the detected object. The tracked objects are further transformed to three-dimensional objects in the world coordinates.
G06V 10/25 - Determination of region of interest [ROI] or a volume of interest [VOI]
G06V 10/74 - Image or video pattern matchingProximity measures in feature spaces
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
G01S 13/06 - Systems determining position data of a target
G01J 5/48 - ThermographyTechniques using wholly visual means
2.
CHALCOGENIDE LENS ELEMENTS AND METHODS OF MANUFACTURE
Chalcogenide lens elements and methods of manufacturing such lens elements are provided. In one example, a method includes depositing a first chalcogenide layer on a substrate. The method further includes applying a first stamp to the first chalcogenide layer. The method further includes reflowing, in response to applying the first stamp, the first chalcogenide layer to form a first shaped chalcogenide layer. The method may further include singulating the substrate and the first shaped chalcogenide layer to obtain a plurality of chalcogenide lens elements.
Systems and methods for tracking objects though a traffic control system include an image sensor configured to capture a stream of images of scene from an associated real-world position, an object tracker configured to identify an object in the captured images and define an associated object location in the captured images, a three-dimensional stage model system configured to transform the associated object location in the image to three-dimensional coordinates associated with the image sensor, and a three-dimensional world model configured to transform identified objects to real-world coordinates. Embodiments use lens aberration, sensor mounting height and location, accelerometer, gyro-compass and/or global position satellite information to generate a situational map.
G08G 1/052 - Detecting movement of traffic to be counted or controlled with provision for determining speed or overspeed
G06T 7/70 - Determining position or orientation of objects or cameras
G08G 1/017 - Detecting movement of traffic to be counted or controlled identifying vehicles
G08G 1/04 - Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
H04N 7/18 - Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
G06V 20/54 - Surveillance or monitoring of activities, e.g. for recognising suspicious objects of traffic, e.g. cars on the road, trains or boats
G06F 18/21 - Design or setup of recognition systems or techniquesExtraction of features in feature spaceBlind source separation
G06F 18/2415 - Classification techniques relating to the classification model, e.g. parametric or non-parametric approaches based on parametric or probabilistic models, e.g. based on likelihood ratio or false acceptance rate versus a false rejection rate
G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
G06V 10/82 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using neural networks
5.
MULTI-SENSOR OCCLUSION-AWARE TRACKING OF OBJECTS IN TRAFFIC MONITORING SYSTEMS AND METHODS
Systems and methods for tracking objects though a traffic control system include a plurality of sensors configured to capture data associated with a traffic location, and a logic device configured to detect one or more objects in the captured data, determine an object location within the captured data, transform each object location to world coordinates associated with one of the plurality of sensors; and track each object location using the world coordinates using prediction and occlusion-based processes. The plurality of sensors may include a visual image sensor, a thermal image sensor, a radar sensor, and/or another sensor. An object localization process includes a trained deep learning process configured to receive captured data from one of the sensors and determine a bounding box surrounding the detected object and output a classification of the detected object. The tracked objects are further transformed to three-dimensional objects in the world coordinates.
Techniques are disclosed for systems and methods to provide accurate and reliable target information when there is relative motion between a remote sensing system and the target. A remote sensing system includes a multichannel ranging sensor assembly and a controller. The ranging sensor assembly includes multiple sensor channels configured to emit modulated sensor beams towards a target and to detect corresponding reflected beams reflected from the target, where the modulated sensor beams are selected to be correlated to each other and mutually incoherent with respect to each other. The controller is configured to receive reflected beam sensor signals corresponding to the detected reflected beams, to determine Doppler components associated with the reflected beams based, at least in part, on the first and second reflected beam sensor signals, and to generate target information based, at least in part, on the determined Doppler components.
Chalcogenide lens elements and methods of manufacturing such lens elements are provided. In one example, a method includes depositing a first chalcogenide layer on a substrate. The method further includes applying a first stamp to the first chalcogenide layer. The method further includes reflowing, in response to applying the first stamp, the first chalcogenide layer to form a first shaped chalcogenide layer. The method may further include singulating the substrate and the first shaped chalcogenide layer to obtain a plurality of chalcogenide lens elements.
Systems and methods for controlling traffic signaling includes a wireless sensor operable to detect and receive wireless signals emitted from a vehicle, an image sensor operable to capture a stream of images of a field of view. A traffic control system is operable to extract geographic positioning information for the vehicle from the wireless signals, track the vehicle's movement using the extracted geographic positioning information, detect and track an object in the stream of images corresponding to the vehicle. The vehicle's geographic movement is further tracked using a pixel location of the object in steam of images and a traffic control action is executed based on the geographic movement to facilitate passage of the at least one vehicle through a monitored traffic control location.
G08G 1/087 - Override of traffic control, e.g. by signal transmitted by an emergency vehicle
G08G 1/04 - Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
H04W 4/029 - Location-based management or tracking services
G06K 9/00 - Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
H04W 4/80 - Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
An imaging lens for use with an operational waveband over any subset of 7.5-13.5 μm may include a first optical element of a first high-index material and a second optical element of a second high-index material, that may have a refractive index greater than 2.2 in the operational waveband, an absorption per mm of less than 75% in the operational waveband, and an absorption per mm of greater than 75% in a visible waveband of 400-650 nm. Optically powered surfaces of the imaging lens may include a sag across their respective clear apertures that are less than 10% of a largest clear aperture of the imaging lens. Respective maximum peak to peak thicknesses of the first and second optical elements may be similar in size, for example within 15 percent of each other. Ratios of maximum peak to peak thickness to clear aperture and, separately, to sag are also provided.
G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
G02B 9/06 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only two + components
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G01J 5/0806 - Focusing or collimating elements, e.g. lenses or concave mirrors
G01J 5/00 - Radiation pyrometry, e.g. infrared or optical thermometry
11.
Thermal-image based object detection and heat map generation systems and methods
An infrared (IR) imaging module may capture a background image in response to receiving IR radiation from a background of a scene and determine background calibration terms using the background image. The determined background calibration terms may be scale factors and/or offsets that equalize the pixel values of the background image to a baseline, value. IR imaging device may use the background calibration terms to capture images that have the baseline value for pixels corresponding to IR radiation received from the background and higher values (or lower values) for pixels corresponding to IR radiation received from a foreground. Such images may be used to count people and generate a heat map. The background calibration terms may be updated periodically, with the update period being increased at least for some pixels or a pixel area when a person is detected.
An imaging lens for use with an operational waveband over any subset of 7.5-13.5 μm may include a first optical element of a first high-index material and a second optical element of a second high-index material. At least two surfaces of the first and second optical elements may be optically powered surfaces. A largest clear aperture of all optically powered surfaces may not exceed a diameter of an image circle of the imaging lens corresponding to a field of view of 55 degrees or greater by more than 30%. The first and second high-index materials may have a refractive index greater than 2.2 in the operational waveband, an absorption per mm of less than 75% in the operational waveband, and an absorption per mm of greater than 75% in a visible waveband of 400-650 nm.
G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 7/04 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
An imaging lens for use with an operational waveband over any subset of 7.5-13.5 μm may include a first optical element of a first high-index material and a second optical element of a second high-index material. At least two surfaces of the first and second optical elements may be optically powered surfaces. A largest clear aperture of all optically powered surfaces may not exceed a diameter of an image circle of the imaging lens corresponding to a field of view of 55 degrees or greater by more than 30%. The first and second high-index materials may have a refractive index greater than 2.2 in the operational waveband, an absorption per mm of less than 75% in the operational waveband, and an absorption per mm of greater than 75% in a visible waveband of 400-650 nm.
G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 7/04 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses with mechanism for focusing or varying magnification
An imaging lens for use with an operational waveband over any subset of 7.5-13.5 μm may include a first optical element of a first high-index material and a second optical element of a second high-index material, that may have a refractive index greater than 2.2 in the operational waveband, an absorption per mm of less than 75% in the operational waveband, and an absorption per mm of greater than 75% in a visible waveband of 400-650 nm. Optically powered surfaces of the imaging lens may include a sag across their respective clear apertures that are less than 10% of a largest clear aperture of the imaging lens. Respective maximum peak to peak thicknesses of the first and second optical elements may be similar in size, for example within 15 percent of each other. Ratios of maximum peak to peak thickness to clear aperture and, separately, to sag are also provided.
G02B 13/00 - Optical objectives specially designed for the purposes specified below
G02B 9/06 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only two + components
G02B 13/14 - Optical objectives specially designed for the purposes specified below for use with infrared or ultraviolet radiation
Systems, methods, and computer-readable media are provided for machining a feature on a work piece along a curving tool path including a spiral pattern with continuously varying radius. In particular, the feature is scribed by a tool while varying an angle of rotation of a cutting surface of the tool with respect to the work piece to maintain a substantially constant angle between the cutting surface and a corresponding relative translational movement between the cutting surface and the work piece along the spiral pattern. A dynamic feed rate of the tool also is varied continuously with respect to the work piece based on the continuously varying radius of the at least one spiral pattern to substantially maintain a target centripetal acceleration of the tool with respect to the work piece.
B24B 13/00 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor
G05B 19/18 - Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
B23Q 15/013 - Control or regulation of feed movement
B24B 13/04 - Machines or devices designed for grinding or polishing optical surfaces on lenses or surfaces of similar shape on other workAccessories therefor grinding of lenses involving grinding wheels controlled by gearing
B29D 11/00 - Producing optical elements, e.g. lenses or prisms
B23D 7/08 - Planing or slotting machines characterised only by constructional features of particular parts of work-tables
Imaging lens (250) for use with an operational waveband over any subset of 7.5-13.5 microns (LWIR) includes a first optical element (210) of a first high-index material and a second optical element (220) of a second high-index material. At least two surfaces (B, E) of the first (210) and the second optical element (220) are optically powered surfaces. The largest clear aperture (E) of all optically powered surfaces does not exceed by more than 30% the image diameter corresponding to a field of view of at least 55 degrees. The first and second high-index materials (e.g. Si, Ge, ZnSe, ZnS or a chalcogenide glass) have a refractive index greater than 2.2 and an absorption per mm smaller than 75% in the operational waveband and an absorption per mm greater than 75% in the 400-650 nm waveband.
An imaging lens for use with an operational waveband over any subset of 7.5-13.5 μm may include a first optical element of a first high-index material and a second optical element of a second high-index material. At least two surfaces of the first and second optical elements may be optically powered surfaces. A largest clear aperture of all optically powered surfaces may not exceed a diameter of an image circle of the imaging lens corresponding to a field of view of 55 degrees or greater by more than 30%. The first and second high-index materials may have a refractive index greater than 2.2 in the operational waveband, an absorption per mm of less than 75% in the operational waveband, and an absorption per mm of greater than 75% in a visible waveband of 400-650 nm.
G02B 7/02 - Mountings, adjusting means, or light-tight connections, for optical elements for lenses
G02B 9/08 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or – having two components only two + components arranged about a stop
G02B 9/00 - Optical objectives characterised both by the number of the components and their arrangements according to their sign, i.e. + or –
patents
