Image processing apparatus, method, and program-recorded storage medium for correcting saturation
US8675249B2 · kind B2 · utility
9Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 2010 |
| Grant date | Mar 18, 2014 |
| Priority date | — |
| Expiry date | Mar 2, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6027
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A gradation-correcting curve to correct a gradation of an input image is generated. Gradation correction based on the gradation-correcting curve is made to a boundary pixel of a color-reproduction space at the same saturation as that of a target lattice point and at a hue of the target lattice point. An equal-saturation line is set by using the boundary pixel of the color-reproduction space after the gradation correction. A saturation-correction amount of the target lattice point is decided based on the gradation-correcting curve and the equal-saturation line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.