Method and apparatus for determining color transformation coefficients
US5978107A · kind A · utility
23Cited by
6References
16Claims
0Family size
Assignee
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Key dates
| Filing date | Aug 2, 1995 |
| Grant date | Nov 2, 1999 |
| Priority date | — |
| Expiry date | Aug 2, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/603
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A method of determining lattice point data of a look-up table for transforming input color coordinates into colorant coordinates of a color image output device, or of reconstructing the same by using a differentiable-continuous function. An input-output characteristic of the device is determined by using a differentiable-continuous function based on discrete transformation pairs, and coefficients of color transformation that uses a look-up table or a continuous function is determined based on the thus-determined differentiable-continuous function.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.