Method and apparatus for the compensation of color detection
US4970584A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1988 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | Nov 29, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6097
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A color document or color video information is inputted to a system which corrects the color of the images scanned or inputted by using data indicative of the conditions under which the color document or color video information was prepared. Color compensation coefficients are used to correct for color distortions that might have occurred in the color document or in the color video information. The color distortions of the input document or those of the color video signal relative to an original are provided as data values of a function of three primary color separation signals, so that color compensation may be performed by an inverse processing of the same data function. This allows for a more accurate and faithful reproduction of the color image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.