Defect detection device and production system

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United States of America Patent

PATENT NO 9805457
SERIAL NO

15324250

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Abstract

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Provided is a defect detection device capable of measuring the volume of surface defects. The defect detection device includes: an imaging device configured to image an image of an inspection object; a binarization processing unit configured to subject the image to first and second binarization processing by use of different first and second binarization thresholds, so as to calculate first and second sizes for an identical defect in the image; a ratio calculation unit configured to calculate a first ratio of the second size to the first size; and a depth determination unit configured to determine a depth of the defect depending on the first ratio.

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Patent Owner(s)

  • NISSAN MOTOR CO., LTD.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Noshi, Yoshitsugu Kanagawa, JP 12 8
Sakurai, Satoru Kanagawa, JP 5 9
Shibayama, Hirohisa Kanagawa, JP 9 5
Shimizu, Akira Kanagawa, JP 333 15504
Shiotani, Eiji Kanagawa, JP 19 71
Sugiyama, Kiyokazu Kanagawa, JP 14 100
Terada, Daisuke Kanagawa, JP 35 176
Utsumi, Yoshito Kanagawa, JP 8 5

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