Compound document compression based upon neighboring pixels
US6865298B2 · kind B2 · utility
5Cited by
8References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 30, 2001 |
| Grant date | Mar 8, 2005 |
| Priority date | — |
| Expiry date | Jan 1, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/005
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for compression of compound images. The method determines a classification for a current pixel based upon its causal neighbors and codes the pixel according to a mode determined by the classification. This coding results in production of a symbol for the pixel and the symbol is then mapped to the output stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.