Details:
Summary:
There are a large number of RGB spaces that already exist. Each has been developed to solve some specific problems in the communication of color throughout a digital imaging system. None of these address the accuracy and gamut requirements for the capture and display of Real world colors, i.e., the colors that exist and can be reproduced by both biologic and man made colorants.
ISO 12640 offers a volumetric gamut of what is considered the "Real World" colors. This standard is used as the basis to develop an optimum RGB color space. The new color space preserves the numerical accuracy required the represent colors specified by ISO 12640. The new RGB primaries have been chosen to transform to the known physiological properties of the human visual system.
A simple 3X3 matrix transform of the RGB primaries produces a visually uniform chromaticity space that supports gamut mapping from the ISO 12640 volumetric gamut to the gamut of all output devices.
This paper discusses the calibration of the three major channels of imaging. They are input, display, and output. Each channel has differing properties that must be taken into account in the transformation of RGB. The calibration and use of each of these channels in imaging is the focus of this paper.