Patent ID: 9689806
Date: 2017-06-27
CPC Classifications: G01N,G06K,G06T

Claim:
1. An inspection apparatus comprising: an imaging section for capturing an image of an inspection target; an illumination section which has a plurality of light segments arranged in a substantially annular form to illuminate the inspection target from three or more illumination directions, a storage part to store a lighting data including order information indicating order of lighting the light segments and interval information indicating a lighting interval of the plurality of light segments, and a lighting control part for lighting the plurality of light segments in accordance with the order information and the interval information stored in the storage part when designated to start lighting, and which moves independently of the imaging section to adjust a distance to the inspection target; an inspection image generating section for synthesizing a plurality of luminance images, acquired by the imaging section, by a photometric stereo method to generate an inspection image having a plurality of pixel values in accordance with inclination or a reflectance of a surface of the inspection target; and a determination section for determining defectiveness/non-defectiveness of the inspection target by using the inspection image.