Video image mapping system
US5173948A · kind A · utility
57Cited by
8References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1991 |
| Grant date | Dec 22, 1992 |
| Priority date | — |
| Expiry date | Mar 29, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N5/2628
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A video mapping system includes a weighting coefficients generator and a two-dimensional resampling filter that efficiently utilize memory resources and operate fast enough to process a video image stream without introducing artifacts through temporal interpolation. This system can accommodate non-linear and many-to-one mappings, allowing a source two-dimensional video image to be folded over itself in complicated ways to produce an image in the target coordinate system. The only restrictions are that the mapping be piecewise continuous and single-valued. Anti-aliasing filtering is implicit in the approach.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.