Lookup table for rate distortion optimized quantization
US10085024B2 · kind B2 · utility
12Cited by
7References
24Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 13, 2013 |
| Grant date | Sep 25, 2018 |
| Priority date | — |
| Expiry date | Oct 19, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A computing device, such as a video encoder, uses respective positions of respective coefficients in a coefficient block to look up, in a lookup table, respective quantization offsets for the respective coefficients. Furthermore, the computing device determines, based at least in part on the quantization offsets for the one or more coefficients, respective quantized levels for the respective coefficients.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.