Method for enhancing the contrast of an image
US7362915B2 · kind B2 · utility
5Cited by
2References
10Claims
0Family size
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Key dates
| Filing date | Jan 22, 2003 |
| Grant date | Apr 22, 2008 |
| Priority date | — |
| Expiry date | Nov 29, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20064
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The contrast of an image is enhanced by converting pixels of detail images of a multi-scale digital representation of the image according to a conversion function. The conversion function is monotonically increasing and odd and provides maximum amplification within an intermediate subrange of pixel values of a detail image which subrange is considered critical. Furthermore the slope of the conversion function has a local maximum and a local minimum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.