Method and apparatus for performing motion compensated temporal filtering in video encoding
US7512182B2 · kind B2 · utility
5Cited by
7References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 30, 2004 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Feb 12, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/194
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method (50) and apparatus (40) for reducing noise in a video signal calculates (53) a discrimination value of a filter based on a magnitude difference between a current frame and a prior frame of a sequence of frames and modifies (54) the current frame using the modified discrimination value. The output of the filter is calculated as follows:g(i, j, k)=f(i, j, k)±βwherein:
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.