Apparatus and method for projection image having an image processing device with a replica image information generating unit
US7872217B2 · kind B2 · utility
9Cited by
1References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 16, 2008 |
| Grant date | Jan 18, 2011 |
| Priority date | — |
| Expiry date | Jul 10, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N9/3179
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
When it is estimated that first average brightness of image information of a projection image is under second average brightness of image information of a source image having a single spatial frequency on which a normal compensation is performed, an area having brightness above the second average brightness in the image information of the projection image is increased, and when it is estimated that the first average brightness is above the second average brightness, an area having brightness under the second average brightness in the image information of the projection image is increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.