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AssigneeFujitsu Limited
InventorsMasayoshi Shimizu, Masahiro Mori, Shoji Suzuki, Satoshi Semba
Estimating the term…
When an L*a*b* value of a certain color is outside a target color gamut to be converted, it is judged whether the L*a*b* value is located within the range of the color gamut set under a predetermined condition. This set range is a range in which the accuracy is degraded if colors are converted using only a first method, for example, a range in the neighborhood of the color gamut. If a color to be converted is located within the range, colors are converted using a second method. If the L*a*b* value of the color to be converted is outside of the set range, it is converted using the first method until the conversion result is contained within the range. Then, the occurrence of both a problem which the first conversion method has for colors in the neighborhood of the color gamut when colors are converted and a problem which the second method has in the conversion of a color far from the color gamut can be suppressed.
A color data conversion method for converting color data to color data inside a target color gamut, comprising the steps of:
A color conversion table for converting colors exhibited by a first device to colors which can be exhibited by a second device, wherein color data values which are registered in the color conversion table are generated using a color data conversion method comprising the steps of (a) judging whether color data to be converted are contained in a predetermined area of a color gamut of the second device and (b) converting the color data to be converted using one of at least two color gamut conversion methods or combining two or more color conversion methods and outputting a result, and registering color data values of the second device corresponding to the color data values.
A device driver of a second device for outputting colors exhibited by a first device as colors which can be exhibited by the second device, comprising a color conversion table in which color data values generated using a color data conversion method comprising the steps of (a) judging whether color data to be converted are contained in a predetermined area of a color gamut of the second device and (b) converting the color data to be converted using one of at least two color gamut conversion methods or combining two or more color conversion methods and outputting a result, and registering color data values of the second device corresponding to the color data values.
A color data conversion apparatus for converting color data to color data inside a target color gamut, comprising:
A computer-readable storage medium on which is recorded a program for causing a computer to execute a process, said process comprising the steps of:
Dependencies are inferred from the claim text.