Spatiotemporal metrics for rate distortion optimization
US9020294B2 · kind B2 · utility
6Cited by
12References
24Claims
0Family size
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Key dates
| Filing date | Jan 8, 2013 |
| Grant date | Apr 28, 2015 |
| Priority date | — |
| Expiry date | May 2, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/19
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Spatial and temporal metrics are computed for a picture or regions within a picture to determine the impact of coding and quantization on the quality of an encoded picture. Prediction mode decisions and quantization optimization algorithms are used to create a compressed bit stream that minimizes coding artifacts. Pre-processing techniques are also used to suppress coding artifacts that reduce picture quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.