Method and apparatus for motion estimation quantization dithering
US6594312B1 · kind B1 · utility
3Cited by
1References
28Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 31, 2000 |
| Grant date | Jul 15, 2003 |
| Priority date | — |
| Expiry date | Jan 9, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/53
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and apparatus that reduce the complexity of motion estimation while providing better quality for a particular level of reduced resolution than previously available are described. The method and apparatus involve motion estimation quantization dithering to avoid quantization error effects when reducing the resolution, for example, from eight-bit pixel intensity values to two-bit pixel intensity values. Consequently, an embodiment of the invention provides efficient motion estimation using statistically accurate reduced resolution representations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.