Printer profile mapping of input primaries to output primaries
First Claim
1. A method for printing colors outside the gamut of an image output device, comprising the steps of:
- experimentally determining a relationship between an input primary and an output primary;
mapping the input primary to an output primary;
mapping an output of gamut primary to a placement of desired printer primaries.
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Abstract
A method for printing outside the gamut by anticipating where monitor primaries will map and the placement of desired printer primaries at that place. A relationship is established between a printer (B2Ax) profile that anticipates the input (A2Bx) profile and maps them in a simplistic manner. The mapping is used to create an output ICC profile (B2Ax) mapping that includes mappings for colors out of the gamut. First, the most important color mappings (RGBCMY, etc.) are established and these mappings are then used to determine the outside the gamut properties of the ICC output transform. The inside the gamut transforms remain the same as classic rendering. Another aspect of the present invention is to make run-time changes to the printer profile to map the image input primaries to optimal output primaries, thus enabling a printer to be mapped for several different types of monitors or input primaries.
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Citations
22 Claims
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1. A method for printing colors outside the gamut of an image output device, comprising the steps of:
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experimentally determining a relationship between an input primary and an output primary;
mapping the input primary to an output primary;
mapping an output of gamut primary to a placement of desired printer primaries. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for mapping an image input profile to an image output device, comprising:
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means adapted to experimentally determine a relationship between an input primary and an output primary;
means adapted to map the input primary to an output primary;
means adapted to map an output of gamut primary to a placement of desired printer primaries. - View Dependent Claims (9, 10, 11, 12, 13, 18, 19)
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14. A computer readable medium of instructions having computer readable code encoded thereon for mapping an image input profile to an image output device, comprising:
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means adapted to experimentally determine a relationship between an input primary and an output primary;
means adapted to map the input primary to an output primary;
means adapted to map an output of gamut primary to a placement of desired printer primaries. - View Dependent Claims (15, 16, 17)
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20. An image output apparatus, comprising:
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means adapted to communicate with a transformation table, the transformation table comprising means adapted to map an input primary to an output primary and means adapted to map an out of gamut primary to a placement of desired printer primaries;
means for receiving an image comprising a plurality of colors from an image input device;
wherein an output image is created by transforming the plurality of colors from the input image device via the transformation table and at least one of the plurality of colors is outside the image output device'"'"'s gamut. - View Dependent Claims (21, 22)
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Specification