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US 7,126,718 B1Granted
Adjustment of color appearance models
AssigneeCanon Kabushiki Kaisha
InventorsTodd D. Newman, Eugenio Martinez-Uriegas, Elizabeth Pirrotta
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AssigneeCanon Kabushiki Kaisha
InventorsTodd D. Newman, Eugenio Martinez-Uriegas, Elizabeth Pirrotta
Estimating the term…
A system for adjusting the representation of a device's color gamut in color appearance space, comprising performing forward mapping of sample colors from a device-dependent space to a device-independent color appearance space to obtain forward-mapped device-independent values, obtaining mismatch values for perceived device-neutrals, each mismatch value being a difference between a forward mapped value for the device-neutral and a neutral axis of the color appearance space, and adjusting each forward-mapped device-independent value by utilizing the obtained mismatch value for each corresponding lightness level of device-neutrals in order to obtain an adjusted forward mapping. The adjusting of each forward-mapped device-independent value may be a full adjustment of each value, or a partial adjustment that is performed in either a linear or non-linear manner and that may be based on chroma, lightness, or both. The adjusted forward-mapping may be inverted with both the adjusted forward-mapping and the inverted adjusted forward-mapping being inserted into a color management module.
A method for adjusting a representation of a device's color gamut in color appearance space, comprising the steps of:
Computer-executable process steps stored on a computer-readable medium that, when executed by a computer, cause the computer to execute a method for adjusting a representation of a device's color gamut in color appearance space, comprising the steps of:
An apparatus that processes color image data, comprising:
A computer-readable medium on which is stored code for performing computer-executable process steps for adjusting a representation of a device's color gamut in color appearance space, wherein the computer-executable process steps comprise:
An image processing method, comprising the steps of:
A memory medium storing processing computer-executable process steps for an image processing method, the process steps comprising the steps of:
An image processing method, comprising the steps of:
A computer-readable medium on which are stored computer-executable process steps for performing an image processing method, the executable process steps comprising the steps of:
An image processing method, comprising the steps of:
A memory medium storing computer-executable process steps for an image processing method, the process steps comprising the steps of:
Computer-executable process steps stored on a computer-readable medium that, when executed by a computer, cause the computer to execute an image processing method, the process steps comprising the steps of:
Computer-executable process steps stored on a computer-readable medium that, when executed by a computer, cause the computer to execute an image processing method, the process steps comprising the steps of:
Dependencies are inferred from the claim text.