Color correcting method and color correcting device involving masking equation variation based upon gray levels for a selected color
US5805313A · kind A · utility
4Cited by
11References
8Claims
0Family size
Assignee
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Key dates
| Filing date | Sep 22, 1993 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Sep 22, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4072
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Input data corresponding to three primary colors C, M and Y are subjected to masking correction, to obtain data C', M' and Y'. A correction factor in a masking equation is varied depending on which of three sections into which all the gray levels of each of the input data C, M and Y are divided, the section being a section to which the input data of a selected color belong. As a result, suitable masking correction conforming to the value of the input data is made, thereby to improve color reproducibility of a color image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.