Enhancing images
US10007974B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jun 10, 2016 |
| Grant date | Jun 26, 2018 |
| Priority date | — |
| Expiry date | Sep 15, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20208
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of enhancing an image includes constructing an input histogram corresponding to an input image received at a focal plane array, the input histogram representing a pixel intensity distribution corresponding to the input image and performing an analytical operation on the input histogram to produce a modified cumulative distribution, wherein the analytical operation is a function of camera temperature. The input image is transformed using the modified cumulative distribution to produce an enhanced output image corresponding to the input image, wherein at least a portion of the input image is enhanced in the output image. In addition to or in lieu of the non-linear operation, the binning edges of the input histogram can be adjusted based on at least one of camera temperature and sensitivity state to construct an adjusted cumulative distribution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.