Xyz Color Space

The xyz coordinates for the reddest possible red greenest possible green and bluest possible blue are called the color space s red green and blue primaries.

Xyz color space. With x 1 y z 0 are imaginary colors i e they cannot be physically realized. Xyz color space as it can be seen on figure 14 many colors have negative trichromatic coordinates in the rgb system as a result of the choice of three monochromatic primary colors. Cie 1931 xyz was the first attempt to produce a color space based on measurements of human color perception and the basis for almost all other color spaces. This area is the mathematical limit of human eye with respect to color.

This area is the mathematical limit of human vision as far as color is concerned. All this put together produced the well known cie xyz color space which is also known as cie 1931 color space. It serves as a standard reference against which many other color spaces are defined. Because three dimensional objects can t be illustrated very well a two dimensional representation had to be found.

The cie xyz color space encompasses all color sensations that are visible to a person with average eyesight. In the above diagram the colored area is the cie xyz 1931 color space. Cie xyz color space. This color space is based on the results of the cie rgb version of the human eye.

In 1931 based on the results of the cie rgb version of the human eye cie mathematically determined a color space the bull pen a theoretical area called the cie xyz 1931 color space. The primary colors of cie xyz color space e g. In order to eliminate this drawback a linear transformation over the rbg space is made leading to the tristimulus values andwhich take only positive values. Wavelength values in nanometers are indicated in figure 3.

The xyz coordinates for the lightest light is called the color space s white point. Colored area in above chromaticity diagram is the cie xyz 1931 color space. That is why cie xyz tristimulus values is a device invariant representation of color. This color space aims to describe all visible colors to the human eye and can be shown as a three dimensional cube.