System and method for determination of gray for CIE color...

Details System and method for determination of gray for CIE color... System and method for determination of gray for CIE color...

2006-04-06

2010-02-02

Yang, Ryan R (Department: 2628)

Computer graphics processing and selective visual display system

Computer graphics processing

Attributes

C358S001900

Reexamination Certificate

active

07656414

ABSTRACT:
In accordance with the present invention, a system and method are described for producing pure gray tones on a multi-color document output device that includes a system for operating on device independent color data having multiple color components, which color data corresponds to one or more associated electronic documents. The system and method function to extract grayscale data by the use of chromaticity properties of an input image.

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patent: 6788813 (2004-09-01), Cooper
patent: 2002/0131634 (2002-09-01), Weibrecht et al.
patent: 2005/0185200 (2005-08-01), Tobol
patent: 2005/0264837 (2005-12-01), Shimada

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