Image pickup apparatus and its light source estimating apparatus
US8164647B2 · kind B2 · utility
0Cited by
2References
20Claims
0Family size
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Key dates
| Filing date | Mar 30, 2007 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Aug 20, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/88
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A light source estimating apparatus for estimating a type of a light source used when an input image was picked up, the apparatus including: distribution retaining means which retains a distribution, in a predetermined space, of pixel data picked up under a first or second light source; coordinate determining means which determines coordinates of the pixel data of the input image in the predetermined space; and distribution judging means which judges distribution of the pixel data picked up under the first or second light source to which the coordinates belong.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.