Methods and apparatus for determining quantization parameter predictors from a plurality of neighboring quantization parameters
US9235774B2 · kind B2 · utility
7Cited by
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4Claims
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Key dates
| Filing date | Jun 8, 2011 |
| Grant date | Jan 12, 2016 |
| Priority date | — |
| Expiry date | Jun 8, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/52
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus are provided for determining quantization parameter predictors from a plurality of neighboring quantization parameters. An apparatus includes an encoder for encoding image data for at least a portion of a picture using a quantization parameter predictor for a current quantization parameter to be applied to the image data. The quantization parameter predictor is determined using multiple quantization parameters from previously coded neighboring portions. A difference between the current quantization parameter and the quantization parameter predictor is encoded for signaling to a corresponding decoder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.