Visual processing device, visual processing method, visual processing program, and semiconductor device
US7783126B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2004 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Apr 4, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4074
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A visual processing device that achieves gradation processing and further enhances a visual effect. The visual processing device 1 performs gradation processing for each image region of an input signal IS, and includes an image partitioning portion 2, a gradation transformation curve derivation portion 10, and a gradation processing portion 5. The image partitioning portion 2 and the gradation transformation curve derivation portion 10 use a brightness histogram Hm of a wide area image region Em to create a gradation transformation curve Cm of an image region Pm. The gradation processing portion 5 performs gradation processing of the image region Pm based on the derived gradation transformation curve Cm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.