Patent ID: 8139868
Filing Date: 2012-03-20
Classification: G06K

Abstract:
1. An inspection apparatus which obtains a search image and applies template matching to the search image, said inspection apparatus comprising: a storage device storing first distribution information indicating a distribution of first similarities between a template selection image and a template; a similarity distribution calculating unit that calculates second distribution information indicating a distribution of second similarities between a search image and the template; a unit that calculates third similarities between similarity distributions, said third similarities indicating similarities between the first and second distribution information; a position mismatch amount calculating unit that calculates an amount of position mismatch between the first and second distribution information an integrated index value calculating unit that calculates, for matching candidate positions of the second distribution information, an index value based on the second similarities and the third similarities between the similarity distributions, and carries out an operation in which the smaller the amount of position mismatch is, the larger a rate of the similarities between the similarity distributions in calculating the integrated index value; and a matching position determining unit that determines a matching position on the basis of the integrated index value.