Compression of image regions according to graphics command type
US7903119B2 · kind B2 · utility
8Cited by
7References
36Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2004 |
| Grant date | Mar 8, 2011 |
| Priority date | — |
| Expiry date | Oct 17, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/33357
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method according to the invention conserves host system resources by compressing an image region according to the type of graphics command used to generate or modify the region. As an image is being rendered, a list of modified image regions is maintained. For each modified image region, metadata are associated with the region to identify the type of graphics command that was used to produce the modification. Per-region choices of compression algorithms can then be made responsive to the metadata without regard to the content of the image data itself.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.