Deformation detection apparatus and deformation detection method

摘要

A rectangular setting unit (1031) that sets a plurality of rectangular blocks that divide a visible image in which the surface of the object is photographed, a background luminance value of a visible image in which the surface of the object is photographed, and a rectangle setting unit are set. A candidate rectangle determination unit (103) that determines a deformed candidate rectangle that is a candidate for a deformed rectangle that forms a deformed region among a plurality of rectangular blocks based on the average luminance value in each rectangular block, and a candidate rectangle Among the candidate deformation rectangles determined by the determination unit, a candidate rectangle integration unit (104) for setting a modification candidate region obtained by integrating regions of the modification candidate rectangles adjacent to each other, and a modification candidate set by the candidate rectangle integration unit A candidate contour extracting unit (105) that extracts a contour block that forms the outer periphery of the region, and each contour block is based on the luminance feature amount in each rectangular block around each contour block extracted by the candidate contour extracting unit. Deformation Determining whether the shape, with a candidate contour determination unit and (106) of the region surrounded by the contour block determined as the Deformation region it is determined that the Henjo rectangular.