Chroma boost on SDR and HDR display adapted signals for SL-HDRx systems
US12335495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 28, 2021 |
| Grant date | Jun 17, 2025 |
| Priority date | — |
| Expiry date | Apr 28, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/98
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method comprising obtaining a current RGB image; classifying colors of pixels of the current RGB image in a plurality of classes; for each color class, determining data representative of said color class, comprising a dominant luminance value representative of a luminance at which a color in said class is predominant and determining from said data representative of said color class a value representative of a gain of chrominance representative of a margin for increasing a chrominance component in said color class; and, encoding the dominant luminance value and the value representative of the gain corresponding to each class as metadata representative of a Saturation Gain Function in a bitstream, said function defining a color correction to apply to a pixel in function of a luminance of said pixel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.