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AssigneeCognex Corporation
InventorsWilliam M. Silver, E. John McGarry, Matt Hill, Nigel J. Foster, Willard Foster
Estimating the term…
Disclosed is a method for determining the absence or presence of one or more instances of a predetermined pattern in an image, and for determining the location of each found instance within a multidimensional space. A model represents the pattern to be found, the model including a plurality of probes. Each probe represents a relative position at which a test is performed in an image at a given pose, each such test contributing evidence that the pattern exists at the pose. The method further includes a comparison of the model with a run-time image at each of a plurality of poses. A match score is computed at each pose to provide a match score surface. Then, the match score is compared with an accept threshold, and used to provide the location any instances of the pattern in the image.
A method for refining search results representing possible instances of a pattern in an image having a square grid of pixels and associated positions, the search results being characterized by at least one non-translation degree of freedom (DOF), the method comprising the steps of:
A method for refining search results representing possible instances of a pattern in an image having a square grid of pixels and associated positions, the search results being characterized by at least one non-translation degree of freedom (DOF), the method comprising the steps of:
In a two-dimensional pattern matching data processing product for refining search results representing possible instance of a pattern in an image, the search results being characterized by at least one non-translation degree of freedom (DOF) the product tangibly embodied in a non-transitory and data processing device readable medium, the product comprising instructions being operable to cause a data processing apparatus to:
Dependencies are inferred from the claim text.