Detection of airborne flash artifacts using preflash image
US7551800B2 · kind B2 · utility
26Cited by
12References
83Claims
0Family size
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Key dates
| Filing date | Aug 9, 2007 |
| Grant date | Jun 23, 2009 |
| Priority date | — |
| Expiry date | Aug 9, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T2207/20032
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Flash image orb artifacts arising from specular reflections from airborne particles are corrected. An image of a scene using flash illumination and a reference image of substantially the same scene are acquired. The reference and flash images are subtracted to generate a difference image. Edge and interior region features of an orb artifact within the difference image are determined. The edge feature is matched with the interior region, and the orb artifact is corrected from the flash image based on the matching.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.