Inspection apparatus configured to inspect a printed product by positioning a reading target image obtainable by reading the printed product relative to a reference image and collating the reading target image with the reference image

摘要

An inspection apparatus inspects a printed product by positioning a reading target image of the printed product relative to a reference image and collating the reading target image with the reference image includes a positioning unit configured to perform positioning processing for the reference image and the reading target image with a first precision, and a detection unit configured to detect an image defect candidate area by collating the reading target image with the reference image, which have been positioned by the positioning unit. The positioning unit newly performs the positioning processing for the reference image and the reading target image in the image defect candidate area with a second precision that is higher than the first precision. The detection unit detects an image defect by collating the reading target image with the reference image in an area having been newly subjected to the positioning processing using the second precision.

主权项

1. An inspection apparatus configured to inspect a printed product by positioning a reading target image obtainable by reading the printed product relative to a reference image and collating the reading target image with the reference image, the inspection apparatus comprising:
a memory; a processor coupled to the memory which executes the following: performing positioning processing for the reference image and the reading target image with a first precision; detecting an image defect candidate area by collating the reading target image with the reference image, determining whether an edge area is present in an area, of the reference image, which corresponds to the detected image defect candidate area, wherein, in a case where it is determined that the edge area is present in the area of the reference image, the positioning processing is newly performed for the reference image and the reading target image in the image defect candidate area with a second precision that is higher than the first precision and the reading target image is collated with the reference image in the image defect candidate area in which the positioning processing has been performed with the second precision, and wherein, in a case where it is not determined that the edge area is present in the area of the reference image, the positioning processing for the reference image and the reading target image in the image defect candidate area with the second precision is not performed and the image defect candidate area is detected as an area having an image defect.