Coding of HDR video signals in the ICtCp color format
US10659790B2 · kind B2 · utility
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Key dates
| Filing date | Apr 19, 2017 |
| Grant date | May 19, 2020 |
| Priority date | — |
| Expiry date | Apr 19, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/186
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods to improve the quality of coding high-dynamic range (HDR) signals in the ICtCp color space are presented. Techniques are described to a) generate optimum chroma Offset and scaling parameters, b) compute chroma mode decisions by optimizing mode selection distortion metrics based on chroma saturation and hue angle values, and c) preserving iso-luminance by maintaining in-gamut values during chroma down-sampling and chroma up-sampling operations.
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