Image processing circuit and method for modifying a pixel value
US7095448B2 · kind B2 · utility
3Cited by
14References
63Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2000 |
| Grant date | Aug 22, 2006 |
| Priority date | — |
| Expiry date | Aug 5, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/86
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An image processing circuit compares a pixel value to a threshold value and modifies the pixel value if the pixel value has a predetermined relationship to the threshold value. Alternatively, the image processing circuit generates a random number and combines the random number with a pixel value. Such image processing circuits can be used to remove artifacts such as contour artifacts from a decoded electronic image or a sequence of decoded video frames.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.