Method and apparatus for recognizing paster portion of web
US5440402A · kind A · utility
5Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 23, 1992 |
| Grant date | Aug 8, 1995 |
| Priority date | — |
| Expiry date | Oct 23, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V2201/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
According to a method and apparatus for recognizing a paster portion of a web, each pixel data of a printed matter serving as a reference is stored as reference image data. Each pixel data of a printed matter serving as a test target printed on the web is stored as test image data. The reference image data is compared with the test image data in units of pixels to detect defective pixels. The paster portion of the web is recognized on the basis of a generation pattern of the defective pixels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.