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LUMINANCE DEPENDENT SCALING OF CHROMINANCE DATA

IP.com Disclosure Number: IPCOM000027154D
Original Publication Date: 1995-Jun-30
Included in the Prior Art Database: 2004-Apr-07

Publishing Venue

Xerox Disclosure Journal

Abstract

As described in the Xerox Color Encoding Standard (XNSS 288811, March 1989), Xerox has proposed a device independent method for specifying colors. This color description specifies a color in terms of luminance, or Y value, and two chrominance components, designated E and S. This color space is a simple linear transformation of a color space which uses the red, green, and blue components of a color to describe the color. This red-green-blue color space will be called RGB space. Many devices such as scanners, printers and displays require that colors be specified in their own device dependent RGB color space coordinates. It is therefore necessary to transform between YES space and RGB space.