Contrast optimization of images
US7835588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 2006 |
| Grant date | Nov 16, 2010 |
| Priority date | — |
| Expiry date | Aug 26, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/10016
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Aspects of the invention relate to methods and systems for optimizing contrast of digital images and video. Because of the size limitations placed on cameras and sensors that are part of devices, it is common for images to have poor quality. Different images traditionally require different solutions as they exhibit drastically different features. Aspects allow managed control on limiting the stretching strength of a stretching function, thus maintaining the natural appearance of images, tolerable amount of noise enhancement, and contrast reduction on less desirable parts of the image. Further aspects relate to a stretching function presented as one Look Up Table (LUT), thus allowing fast computations on limited computing devices such as consumer electronic devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.