Methods, apparatus, and systems for extended high dynamic range (“HDR”) HDR to HDR tone mapping
US10148906B2 · kind B2 · utility
10Cited by
2References
21Claims
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Key dates
| Filing date | Mar 16, 2017 |
| Grant date | Dec 4, 2018 |
| Priority date | — |
| Expiry date | Mar 16, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20208
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Aspects of present principles are directed to methods and apparatus for tone mapping a high dynamic range image. The apparatus includes a processor for performing the following and the method includes the following: obtaining a luminance component of the high dynamic range image; determining an HDR to HDR tone mapper curve; determining a tone compressed image by applying the HDR to HDR tone mapper curve to the luminance component of the high dynamic range image; wherein the HDR to HDR tone mapper curve comprises a first part for dark and mid-tone levels, and a second part for highlights.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.