Method for obtaining exposure compensation values of high dynamic range image, terminal device and non-transitory computer-readable storage medium
US11375128B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 2020 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Nov 7, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/10
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and device for obtaining exposure compensation values of a high-dynamic-range image, wherein the method includes: a relationship between brightness values and pixel ratios in different color channels corresponding to a current scene is determined; an underexposure degree and an overexposure degree of the current scene are determining, according to a preset normal exposure brightness threshold, a preset pixel ratio threshold, and the relationship between brightness values and pixel ratios; and an underexposure compensation value and an overexposure compensation value of the current scene are determined, according to the underexposure degree and the overexposure degree of the current scene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.