Image compression method using dynamic color index
US8599214B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 1, 2010 |
| Grant date | Dec 3, 2013 |
| Priority date | — |
| Expiry date | Sep 7, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG09G2340/02
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for communicating an image section between a first computer and a second computer, the first computer adapted for remotely coupling to the second computer via a network. The method comprises determining, by the first computer, a color table comparison result for an input pixel value, the color table comparison result identifying one of (i) an indexed color value of a color table, the indexed color value approximating the input pixel value, or (ii) an absence in the color table of any color value approximating the input pixel value; generating, based on the color table comparison result, encoded data comprising one of a derivative of the input pixel value or an index for the indexed color value; communicating, to the second computer, the encoded data; and updating the color table according to the color table comparison result.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.