Image processing system that detects an object by comparison of a difference between luminance of an illuminated and non-illuminated image
US8077916B2 · kind B2 · utility
1Cited by
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18Claims
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Key dates
| Filing date | Aug 20, 2007 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Oct 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06V40/161
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Using an on-vehicle camera mounted on a vehicle to view the face of a driver as an imaging object, an image processing system judges the presence/absence of the imaging object in the image. An average luminance of an image when light of a particular wavelength is irradiated in an imaging direction is compared to an average luminance of an image imaged when no light is irradiated. When the difference between the average luminance values is equal to a reference value or less, it is judged that the imaging object is absent in the image by imaging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.