Two dimensional image recording and reproducing scheme using similarity distribution
US7082225B2 · kind B2 · utility
5Cited by
4References
13Claims
0Family size
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Key dates
| Filing date | Aug 28, 2002 |
| Grant date | Jul 25, 2006 |
| Priority date | — |
| Expiry date | Jan 15, 2025 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V10/7515
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a two dimensional image recording and reproducing scheme, a position of a prescribed pattern in an information recording image that contains the prescribed pattern is detected by detecting a rough position of the prescribed pattern in the information recording image in units of pixel size, and then detecting a detailed position of the prescribed pattern in the information recording image in units less than the pixel size, according to the rough position and a center of gravity of a distribution of similarities between regions in the information recording image and a reference image of the prescribed pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.