Adaptive contrast optimization of digital color images
US7796830B2 · kind B2 · utility
1Cited by
11References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 15, 2006 |
| Grant date | Sep 14, 2010 |
| Priority date | — |
| Expiry date | Jul 15, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10024
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and systems are provided for adjusting the contrast and intensity of digital images. Digital images may be processed by first creating a histogram that identifies the intensity of components of the digital image. A transformation function is then computed using the histogram. The transformation function can be used to adjust the intensity of a low light portion of the digital image and is applied to individual color components of the digital image. Finally, the contrast of a portion of the digital image other than the low light portion of the digital image is adjusted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.