Adaptive scan method for image/video coding
US8000546B2 · kind B2 · utility
30Cited by
11References
4Claims
0Family size
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Key dates
| Filing date | Aug 1, 2008 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Nov 6, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/593
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An adaptive scan method for image/video coding in accordance with the present invention comprises acts of calculating an average power of the transformed coefficients vector and acts rearranging the powers of the transformed coefficients with descending order in the data block according to the power of transformed coefficients; Therefore, the adaptive scan method is dependent on different prediction mode witch has been coded in H.264 standard, and provides better rate-distortion performance in entropy coding to the conventional zig-zag scan.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.