Method and apparatus for faster-than-real-time lossless compression and decompression of images
US7693339B2 · kind B2 · utility
33Cited by
3References
17Claims
0Family size
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Key dates
| Filing date | Dec 8, 2004 |
| Grant date | Apr 6, 2010 |
| Priority date | — |
| Expiry date | Feb 11, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N19/90
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Image compression wherein a spatial prediction filter combines two adjacent samples and a corner sample in the proportion 3:3:−2, or wherein chunked decode tables are used to decode embedded prefix codes more than one bit at a time. A spectral prediction filter might be used in conjunction with the spatial prediction filter. Chunked decode tables might be used in combination with simple prediction filters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.