Method and apparatus for enhancing flash and ambient images
US7443443B2 · kind B2 · utility
40Cited by
3References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 2005 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Apr 27, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/741
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method and system generate an enhanced output image. A first image is acquired of a scene illuminated by a first illumination condition. A second image is acquired of the scene illuminated by a second illumination condition. First and second gradient images are determined from the first and second images. Orientations of gradients in the first and second gradient images are compared to produce a combined gradient image, and an enhanced output image is constructed from the combined gradient image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.