Imaging apparatus and light source estimating device for the imaging apparatus
US7514669B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 10, 2007 |
| Grant date | Apr 7, 2009 |
| Priority date | — |
| Expiry date | May 10, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/1213
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A light source estimating device includes: a distribution holding section holding a spectral energy distribution of a specific light source as a specular reflection component; a set generating section generating a set determined by the specular reflection component and pixel data of the input image in a predetermined space, with respect to each pixel data of the input image; a detecting section detecting, with respect to each pixel data of the input image, another pixel data neighboring the pixel data and included in the set; and a determining section determining whether or not the specific light source corresponds to the light source used during capture, by setting a likelihood that the specific light source corresponds to the light source used during capture high if the other pixel data exists, and setting a likelihood that the specific light source corresponds to the light source used during capture low if the other pixel data does not exist.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.