Patent ID: 11933739
Assignee: NEC CORPORATION
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 0:
1. An inspection apparatus comprising:
a memory containing program instructions; and
a processor coupled to the memory, wherein the processor is configured to execute the program instructions to:
divide an image of an inspection surface of a product shot with a first imaging unit into a plurality of partial area images;
for each of a plurality of partial areas respectively corresponding to the partial area images, acquire, as a narrow-angle partial area image, an image of the partial area shot with a second imaging unit with a narrower angle than the first imaging unit under various shooting conditions in a pre-learning shooting condition table in which the various shooting conditions and shooting condition IDs uniquely identifying the various shooting conditions are set in advance;
for each of the partial areas, select the narrow-angle partial area image suitable for inspection from among the acquired narrow-angle partial area images, generate an inspection image including the selected narrow-angle partial area image and the shooting condition ID used for shooting the selected narrow-angle partial area image, and detect an anomaly of the inspection surface of the product based on the inspection image;
for each of the partial areas, determine whether or not each of the various shooting conditions is effective based on a frequency of the shooting condition ID included by the inspection image; and
for each of the partial areas, determine whether or not a predetermined condition is established and, with respect to the partial area in which the predetermined condition is established, generate a post-learning shooting condition table in which only the various shooting condition determined to be effective among the various shooting conditions is set.