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
US9170543B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 7, 2012 |
| Grant date | Oct 27, 2015 |
| Priority date | — |
| Expiry date | Aug 22, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V2201/06
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.