Method and apparatus for controlling image quality and compression ratios
US7218784B1 · kind B1 · utility
13Cited by
13References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 2000 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | May 1, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/60
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention relates to a method and apparatus for controlling image quality and compression ratios in image segmentation. More particularly, the invention is directed to an image segmenting system and method that analyzes and classifies pixel blocks of an image to determine the manner in which the image block should be compressed, e.g. with a lossy or a lossless technique. This approach, which assumes no apriori knowledge of the any specific region of the image, results in effective use of the various known compression techniques and provides improved overall compression ratios and image quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.