Local definition of global image transformations
US8907971B2 · kind B2 · utility
18Cited by
10References
22Claims
0Family size
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Key dates
| Filing date | Apr 9, 2012 |
| Grant date | Dec 9, 2014 |
| Priority date | — |
| Expiry date | Mar 30, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/30201
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A global image adjustment, such as dynamic range adjustment is established based on image characteristics. The image adjustment is based more heavily on pixel values in image areas identified as being important by one or more saliency mapping algorithms. In one application to dynamic range adjustment, a saliency map is applied to create a weighed histogram and a transformation is determined from the weighted histogram. Artifacts typical of local adjustment schemes may be avoided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.