Optimal color quantization for addressing multi-dimensional color calibration look-up-table
US5377025A · kind A · utility
44Cited by
1References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 24, 1992 |
| Grant date | Dec 27, 1994 |
| Priority date | — |
| Expiry date | Nov 24, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6019
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
This invention minimizes the color errors associated with performing conversion and/or correction of color digital image data using multi-dimensional look-up tables of a limited size. By distributing the errors across the color gamut it is possible to reduce the average color error as well as the maximum color errors associated with linear or conventional linear or nonlinear, e.g. cube-root or logarithmic, remapping schemes. The resulting advantage will be color images with greatly reduced artifacts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.