Image processing apparatus
US8036459B2 · kind B2 · utility
0Cited by
4References
13Claims
0Family size
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Key dates
| Filing date | Oct 10, 2008 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | May 1, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10024
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An image processing apparatus enhances contrast without producing color balance distortion or color collapse by generating a gradation-scale correction table from a distribution of a characteristic quantity of an input image signal, using the gradation-scale correction table to derive a gradation correction parameter for each pixel from a maximum component value of the pixel, and multiplying all components of the pixel by the gradation correction parameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.