Systems and methods for HUE control
AssigneeXerox Corporation
InventorMartin S. Maltz
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Abstract
The invention provides a system and method for reducing or eliminating kinks in ink limit conversion processes. In particular, an adjusted ink limit conversion process is provided which approaches the limit in a smooth fashion. Moreover, extrapolated values in the input, values that are outside of a predetermined range, are handled in a smooth fashion. The extrapolated values are used to avoid kinks in the conversion process at the end bounds of the range. Ink limiting is performed gradually as the system approaches the ink limit, avoiding sudden changes in the slope of the system response characteristics. If one of a plurality of colors reaches zero ink, the remaining colors are decreased by multiplying them by a factor less than one. Accordingly, the colorant ratio is maintained, and hue shifts are reduced.
Claims14
An image device that controls hue shifts in an output image, comprising:
- a memory that stores image data that has been input from an image data source;
- and
- a controller that adjusts an appropriate hue color for the input image data by gradually decreasing amounts of various colors in the image data using an adjusted colorant limit function as a total color area coverage approaches a colorant limit.
A method of controlling hue shifts in an output image of an image device, comprising:
- storing image data that has been input from an image data source;
- and
- adjusting an appropriate hue color for the input image data by gradually decreasing amounts of various colors in the image data using an adjusted colorant limit function as a total color area coverage approaches colorant limit.
Dependencies are inferred from the claim text.