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Patent Searching and Data


Title:
DEFORMATION DETECTION DEVICE AND DEFORMATION DETECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2019/049316
Kind Code:
A1
Abstract:
The present invention comprises: a rectangle setting unit (1031) for setting a plurality of rectangular blocks dividing a visible image arrived at by photographing the surface of an object; a candidate rectangle determination unit (103) for using the background luminance value of the visible image arrived at by photographing the surface of the object and the average luminance values in each of the rectangular blocks set by the rectangle setting unit to determine the rectangular blocks from among the plurality of rectangular blocks that are deformation candidate rectangles that are candidates for deformation rectangles forming a deformation area; a candidate rectangle integration unit (104) for setting a deformation candidate area arrived at by combining the areas of adjacent deformation candidate rectangles from among the deformation candidate rectangles determined by the candidate rectangle determination unit; a candidate outline extraction unit (105) for extracting outline blocks forming the outer periphery of the deformation candidate area set by the candidate rectangle integration unit; and a candidate outline determination unit (106) for determining whether each outline block extracted by the candidate outline extraction unit is a deformation rectangle on the basis of feature values for the luminances within the rectangular blocks around the outline block and determining that an area surrounded by outline blocks determined to be deformation rectangles is a deformation area.

Inventors:
KAWAHATA, Yukiyasu (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2017/032493
Publication Date:
March 14, 2019
Filing Date:
September 08, 2017
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
G01N21/88; E01D22/00; G06T7/00
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (Akasaka Sanno Center Bldg. 5F, 12-4 Nagata-cho 2-chome, Chiyoda-k, Tokyo 14, 〒1000014, JP)
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