Shape detection
First Claim
1. A computer-implemented method comprising:
- generating a shape model that includes a predetermined shape with a predetermined scale and predetermined orientation;
receiving an image;
identifying, in the image for each side of the shape model, edges that are parallel to the side of the shape model and that are a predetermined distance from the side of the shape model;
selecting, from among the identified edges, a plurality of edges that have a highest contrast;
determining a fit score between the plurality of edges and each shape of a plurality of shapes that are similar to the shape model; and
based on each fit score, identifying, from among the plurality of shapes, a particular shape that most closely fits the shape model.
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Accused Products
Abstract
Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for shape detection are disclosed. In one aspect, a method includes the actions of generating a shape model that includes a predetermined shape with a predetermined scale and predetermined orientation. The actions further include receiving an image. The actions further include identifying edges that are parallel to the side of the shape model and that are a predetermined distance from the side of the shape model. The actions further include selecting a plurality of edges that likely correspond to edges of a shape that is similar to the shape model. The actions further include determining a fit score between the plurality of edges and each shape of a plurality of shapes that are similar to the shape model. The actions further include identifying a particular shape in the image that most closely fits the shape model.
10 Citations
20 Claims
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1. A computer-implemented method comprising:
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generating a shape model that includes a predetermined shape with a predetermined scale and predetermined orientation; receiving an image; identifying, in the image for each side of the shape model, edges that are parallel to the side of the shape model and that are a predetermined distance from the side of the shape model; selecting, from among the identified edges, a plurality of edges that have a highest contrast; determining a fit score between the plurality of edges and each shape of a plurality of shapes that are similar to the shape model; and based on each fit score, identifying, from among the plurality of shapes, a particular shape that most closely fits the shape model. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising:
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one or more computers; and one or more storage devices storing instructions that are operable, when executed by the one or more computers, to cause the one or more computers to perform operations comprising; generating a shape model that includes a predetermined shape with a predetermined scale and predetermined orientation; receiving an image; identifying, in the image for each side of the shape model, edges that are parallel to the side of the shape model and that are a predetermined distance from the side of the shape model; selecting, from among the identified edges, a plurality of edges that have a highest contrast; determining a fit score between the plurality of edges and each shape of a plurality of shapes that are similar to the shape model; and based on each fit score, identifying, from among the plurality of shapes, a particular shape that most closely fits the shape model. - View Dependent Claims (9, 10, 11, 12, 13, 14, 16, 17, 18, 19, 20)
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15. A non-transitory computer-readable medium storing software comprising instructions executable by one or more computers which, upon such execution, cause the one or more computers to perform operations comprising:
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generating a shape model that includes a predetermined shape with a predetermined scale and predetermined orientation; receiving an image; identifying, in the image for each side of the shape model, edges that are parallel to the side of the shape model and that are a predetermined distance from the side of the shape model; selecting, from among the identified edges, a plurality of edges that have a highest contrast; determining a fit score between the plurality of edges and each shape of a plurality of shapes that are similar to the shape model; and based on each fit score, identifying, from among the plurality of shapes, a particular shape that most closely fits the shape model.
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Specification