Image processing apparatus, image processing method and image pickup apparatus
US8085323B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 2008 |
| Grant date | Dec 27, 2011 |
| Priority date | — |
| Expiry date | Jul 3, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/76
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There are provided an image processing apparatus and method capable of providing a good image whose overexposure and underexposure are suppressed by holding information about saturation and contrast at the time of performing a dynamic range compression. In the image processing apparatus, a level information calculating circuit calculates the level information of each pixel from R, G and B image signals for each pixel, a gain calculating circuit refers to a gain table based on the level information of each pixel calculated by the level information calculating circuit and calculates a gain by which the R, G and B signals of each pixel are multiplied, and a multiplying circuits multiply the R, G and B signals by the gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.