Abstract

A computer-assisted shingle sawing method for recovery optimization using a 0-1 defect relative to the clear line, comprising the steps of taking an image of a next slab to be cut from a wood block; defining from that image, a clear line there-across; and locations of defect on that slab relative to the clear line, determining edge lines of shingles recoverable from the slab according to optimal shingle grade recovery; sawing the next slab along these edge lines, and sawing the next slab from the wood block, thereby releasing an optimum recovery of shingles from the slab. In another aspect there is provided a method for shingle recovery optimization using an optimization by inversion strategy, wherein the inclination of a parting line for cutting the next slab from the wood block is determined for optimal shingle grade recovery. There is also provided an installation for carrying out these methods.

IPC Classes  ?

• B27B 31/06 - Adjusting equipment, e.g. using optical projection
• E04G 23/02 - Repairing, e.g. filling cracksRestoringAlteringEnlarging
• E04D 1/20 - Roofing elements shaped as plain tiles or shingles, i.e. with flat outer surface of plastics, fibrous materials, or wood

Abstract

A method of wood shingle classification and sawing using machine vision comprises the steps of taking an image of a wood slab in a wood block and identifying a defect in that slab; comparing an image of this defect to images of confirmed defects in a database of confirmed defects to find a match of the defect in these images. If a match is not found, sawing a shingle from the slab and classifying the shingle while making abstraction of the defect. In a second aspect, when images of two consecutive shingles are identical, a third and subsequent shingles can be sawn from a block without taking images thereof. In another aspect, the comparing of images is done by an artificial intelligence system that is trained on a database of images that are associable to the subjectivity of experienced shingle sawyers.

IPC Classes  ?

• B27M 3/02 - Manufacture or reconditioning of specific semi-finished or finished articles of roofing elements, e.g. shingles
• E04D 1/22 - Roofing elements shaped as plain tiles or shingles, i.e. with flat outer surface of specified materials, or of combinations of materials, not covered by any one of groups
• G01N 21/95 - Investigating the presence of flaws, defects or contamination characterised by the material or shape of the object to be examined
• G06V 10/75 - Organisation of the matching processes, e.g. simultaneous or sequential comparisons of image or video featuresCoarse-fine approaches, e.g. multi-scale approachesImage or video pattern matchingProximity measures in feature spaces using context analysisSelection of dictionaries
• G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects

Abstract

A method of wood shingle classification and sawing using machine vision comprises the steps of taking an image of a wood slab in a wood block and identifying a defect in that slab; comparing an image of this defect to images of confirmed defects in a database of confirmed defects to find a match of the defect in these images. If a match is not found, sawing a shingle from the slab and classifying the shingle while making abstraction of the defect. In a second aspect, when images of two consecutive shingles are identical, a third and subsequent shingles can be sawn from a block without taking images thereof. In another aspect, the comparing of images is done by an artificial intelligence system that is trained on a database of images that are associable to the subjectivity of experienced shingle sawyers.

IPC Classes  ?

• G06V 10/764 - Arrangements for image or video recognition or understanding using pattern recognition or machine learning using classification, e.g. of video objects
• G06T 7/00 - Image analysis
• G06T 7/70 - Determining position or orientation of objects or cameras
• G06T 7/60 - Analysis of geometric attributes
• G06T 7/90 - Determination of colour characteristics
• G06V 10/74 - Image or video pattern matchingProximity measures in feature spaces
• G06V 10/774 - Generating sets of training patternsBootstrap methods, e.g. bagging or boosting
• G06V 20/50 - Context or environment of the image
• G06V 10/98 - Detection or correction of errors, e.g. by rescanning the pattern or by human interventionEvaluation of the quality of the acquired patterns
• G06T 1/00 - General purpose image data processing
• B23D 59/00 - Accessories specially designed for sawing machines or sawing devices
• B25J 19/02 - Sensing devices

Abstract

A computer-assisted shingle sawing method for recovery optimization using a 0-1 defect relative to the clear line, comprising the steps of taking an image of a next slab to be cut from a wood block; defining from that image, a clear line there-across; and locations of defect on that slab relative to the clear line, determining edge lines of shingles recoverable from the slab according to optimal shingle grade recovery; sawing the next slab along these edge lines, and sawing the next slab from the wood block, thereby releasing an optimum recovery of shingles from the slab. In another aspect there is provided a method for shingle recovery optimization using an optimization by inversion strategy, wherein the inclination of a parting line for cutting the next slab from the wood block is determined for optimal shingle grade recovery. There is also provided an installation for carrying out these methods.

IPC Classes  ?

• E04G 23/02 - Repairing, e.g. filling cracksRestoringAlteringEnlarging
• B27B 31/06 - Adjusting equipment, e.g. using optical projection
• E04D 1/20 - Roofing elements shaped as plain tiles or shingles, i.e. with flat outer surface of plastics, fibrous materials, or wood

Abstract

A computer-assisted shingle sawing method for recovery optirnization using a 0-1 defect relative to the clear line, comprising the steps of taking an image of a next slab to be cut from a wood block; defining from that image, a clear line there-across; and locations of defect on that slab relative to the clear line, determining edge lines of shingles recoverable from the slab according to optimal shingle grade recovery; sawing the next slab along these edge lines, and sawing the next slab from the wood block, thereby releasing an optimum recovery of shingles from the slab. In another aspect there is provided a method for shingle recovery optimization using an optimization by inversion strategy, wherein the inclination of a parting line for cutting the next slab from the wood block is determined for optimal shingle grade recovery. There is also provided an installation for carrying out these methods.

IPC Classes  ?

• B27B 1/00 - Methods for subdividing trunks or logs essentially involving sawing
• B27B 5/02 - Sawing machines working with circular saw bladesComponents or equipment therefor characterised by a special purpose only
• B27B 31/06 - Adjusting equipment, e.g. using optical projection
• B27M 3/02 - Manufacture or reconditioning of specific semi-finished or finished articles of roofing elements, e.g. shingles

Abstract

A computer-assisted shingle sawing method for recovery optimization using a 0-1 defect relative to the clear line, comprising the steps of taking an image of a next slab to be cut from a wood block; defining from that image, a clear line there-across; and locations of defect on that slab relative to the clear line, determining edge lines of shingles recoverable from the slab according to optimal shingle grade recovery; sawing the next slab along these edge lines, and sawing the next slab from the wood block, thereby releasing an optimum recovery of shingles from the slab. In another aspect there is provided a method for shingle recovery optimization using an optimization by inversion strategy, wherein the inclination of a parting line for cutting the next slab from the wood block is determined for optimal shingle grade recovery. There is also provided an installation for carrying out these methods.

IPC Classes  ?

• B27B 1/00 - Methods for subdividing trunks or logs essentially involving sawing
• B27B 5/02 - Sawing machines working with circular saw bladesComponents or equipment therefor characterised by a special purpose only
• B27B 31/06 - Adjusting equipment, e.g. using optical projection
• B27M 3/02 - Manufacture or reconditioning of specific semi-finished or finished articles of roofing elements, e.g. shingles
• G01N 21/898 - Irregularities in textured or patterned surfaces, e.g. textiles, wood
• G06T 7/00 - Image analysis

Abstract

A computer-assisted shingle sawing method for recovery optimization using a 0-1 defect relative to the clear line, comprising the steps of taking an image of a next slab to be cut from a wood block; defining from that image, a clear line there-across; and locations of defect on that slab relative to the clear line, determining edge lines of shingles recoverable from the slab according to optimal shingle grade recovery; sawing the next slab along these edge lines, and sawing the next slab from the wood block, thereby releasing an optimum recovery of shingles from the slab. In another aspect there is provided a method for shingle recovery optimization using an optimization by inversion strategy, wherein the inclination of a parting line for cutting the next slab from the wood block is determined for optimal shingle grade recovery. There is also provided an installation for carrying out these methods.

IPC Classes  ?

• B27B 1/00 - Methods for subdividing trunks or logs essentially involving sawing

Abstract

A computer-assisted shingle sawing method for recovery optimization using a 0-1 defect relative to the clear line, comprising the steps of taking an image of a next slab to be cut from a wood block; defining from that image, a clear line there-across; and locations of defect on that slab relative to the clear line, determining edge lines of shingles recoverable from the slab according to optimal shingle grade recovery; sawing the next slab along these edge lines, and sawing the next slab from the wood block, thereby releasing an optimum recovery of shingles from the slab. In another aspect there is provided a method for shingle recovery optimization using an optimization by inversion strategy, wherein the inclination of a parting line for cutting the next slab from the wood block is determined for optimal shingle grade recovery. There is also provided an installation for carrying out these methods.

IPC Classes  ?

• B27B 1/00 - Methods for subdividing trunks or logs essentially involving sawing
• B27B 5/02 - Sawing machines working with circular saw bladesComponents or equipment therefor characterised by a special purpose only
• B27B 31/06 - Adjusting equipment, e.g. using optical projection
• B27M 3/02 - Manufacture or reconditioning of specific semi-finished or finished articles of roofing elements, e.g. shingles

Goods & Services

(1) Lattes de bois. (1) Offre de vente et la vente de bois d'oeuvre, l'opération forestière de coupe de bois, l'opération de scierie, la transformation de bois et l'opération commerciale canadienne et internationale de vente et de transportation de produits de bois de toutes sortes.

Goods & Services

(1) Lumber and shingles.