Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2005-01-18
2005-01-18
Rogers, Scott A. (Department: 2626)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S536000, C358S003190
Reexamination Certificate
active
06844941
ABSTRACT:
A method is provided for rendering a color image with a plurality of separations with a halftone process using a single screen for a plurality of separations. The screen is comprised of a plurality of pixel locations with associated threshold values and the image is comprised of a plurality of separation values. The method includes the steps of rendering a first one of the plurality of separations in accordance with the screen, wherein the plurality of pixel locations are turned on or off at a given pixel location based on a comparison of the image separation value at that pixel with the screen threshold value. The rendering of the next color separation is made in accordance with the rendering of the first separation and the screen, wherein for constant image separation values, pixel locations are turned on for the separation at pixel locations disposed in a highest available luminance region having a lowest available threshold value.
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Fan Zhigang
Sharma Gaurav
Wang Shen Ge
Rogers Scott A.
Xerox Corporation
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