Method and circuit for detecting edge of fixed pattern
US8594436B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2012 |
| Grant date | Nov 26, 2013 |
| Priority date | — |
| Expiry date | Jul 6, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/752
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Method for detecting edge of fixed pattern includes receiving and analyzing a first image to obtain a first edge information. Second image and a corresponding second edge information are received, in which the second image includes an accumulation of image history information. According to the first edge information and the second edge information, a consistent number and an inconsistent number for pairs of pixels at the corresponding location of the first image and the second image are calculated, in which the consistent number represents how many pairs of pixels of which two compared pixels of each pair are both edge pixels, and the inconsistent number represents one of the two compared pixels is not the edge pixel. When the consistent number is greater than first predetermined value and meanwhile the inconsistent number is less than second predetermined value, first image and second image have a fixed pattern with fixed edge.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.