Method and apparatus for encoding and decoding video using intra prediction mode dependent adaptive quantization matrix
US9894353B2 · kind B2 · utility
2Cited by
1References
8Claims
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Key dates
| Filing date | Jun 12, 2012 |
| Grant date | Feb 13, 2018 |
| Priority date | — |
| Expiry date | Mar 31, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/625
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of encoding video using intra prediction mode dependent quantization matrix includes: calculating an array of quantizers for each size of block unit (100); encoding the arrays of quantizers into header of compressed video stream (102); selecting one scanning order based on a selected intra prediction mode among a plurality of scanning orders (112); scanning the array of quantizers to obtain a block of quantizers based on the selected scanning order (114).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.