Moving picture coding method and moving picture decoding method
US8477838B2 · kind B2 · utility
7Cited by
15References
1Claims
0Family size
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Key dates
| Filing date | Jun 4, 2012 |
| Grant date | Jul 2, 2013 |
| Priority date | — |
| Expiry date | Jun 4, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/70
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A coding method for coding a picture in a moving picture with a processor configured to code, on a block-by-basis, each picture in the moving picture, to generate a coded stream. The processor transforms each picture into coefficients representing spatial frequency components and quantizes the coefficients with a quantization matrix. Identification information identifying the quantization matrix is provided in the coded stream in predetermined units to reduce the amount of data to be coded. The processor is configured to use a coded quantization matrix for a chroma component rather than a default quantization matrix.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.