Method of color quantization in color images
US6678406B1 · kind B1 · utility
9Cited by
6References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 2000 |
| Grant date | Jan 13, 2004 |
| Priority date | — |
| Expiry date | Jan 26, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/644
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method for assigning a color symbol to an image pixel comprises selecting a luminance value from a discrete set of quantized luminance values; selecting a chrominance value from an ordered discrete set of quantized chrominance values; and composing a color symbol from an index of the selected luminance value and an index of an ordinal position of the selected chrominance value. In particular embodiments of the invention, each discrete chrominance value is selected from a Fibonacci lattice on a constant-luminance plane in a perceptually uniform color space such as Lab or Luv.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.