Scalable MPEG video/macro block rate control
US8218627B2 · kind B2 · utility
7Cited by
25References
14Claims
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Key dates
| Filing date | Feb 25, 2010 |
| Grant date | Jul 10, 2012 |
| Priority date | — |
| Expiry date | Mar 17, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/124
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A scaleable macro block rate control method particularly well-suited for MPEG video. There is provided a method to easily derive a quantization parameter (QP) value using information such as bit usage, previous QP values and SAD values from the past encoded and future frames. The method utilizes quantization estimation techniques based on statistical relationships between different intensity measures, such as distortion intensity, absolute difference intensity and mean of absolute difference intensity. The method is well-suited to applications utilizing MPEG video such as MPEG-1, MPEG-2, MPEG-4, JVT/H.264 standards and so forth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.