Low-frequency compression of high dynamic range images
US9324137B2 · kind B2 · utility
2Cited by
6References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 21, 2013 |
| Grant date | Apr 26, 2016 |
| Priority date | — |
| Expiry date | Jan 4, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20208
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Methods and apparatuses for adjusting a global dynamic range of an image are described. An image is decomposed into (i) a low spatial frequency component and (ii) a high spatial frequency component. The global dynamic range of the low spatial frequency component is adjusted to produce an adjusted low spatial frequency component. The image is reconstructed with (i) the adjusted low spatial frequency component and (ii) the high spatial frequency component to thereby produce a processed image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.