Encoding apparatus for color image data
US5359438A · kind A · utility
23Cited by
7References
41Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 17, 1992 |
| Grant date | Oct 25, 1994 |
| Priority date | — |
| Expiry date | Sep 17, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06T9/005
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
There is disclosed an apparatus for encoding, faithful to human visual characteristic, of color image data containing luminance information and color information in the unit of each block of predertermined size, by detecting the edge of the color image data in the block based on the luminance information, forming a code of a fixed length in response to the edge detection, encoding the luminance information and the color information into codes of different lengths according to the presence or absence of edge, and forming codes from the code of fixed length and codes of different lengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.