tristimulusarvot

Tristimulus values are a set of three numbers that describe the color of an object. They are derived from measurements of the light reflected or transmitted by the object and are based on how the human eye perceives color. These values are specifically designed to correspond to the responses of the three types of cone cells in the human retina, which are sensitive to different wavelengths of light.

The tristimulus system most commonly used is the CIE 1931 XYZ color space. In this system, the three tristimulus values are typically denoted as X, Y, and Z. The X value represents the amount of red light perceived, the Y value represents the amount of green light perceived, and the Z value represents the amount of blue light perceived. It's important to note that these are not direct measurements of red, green, and blue light, but rather abstract quantities that model human color vision.

These values are calculated by integrating the spectral power distribution of the light source with the CIE color matching functions, which represent the average human observer's response to different wavelengths. Tristimulus values are fundamental in colorimetry and are used in various applications, including display calibration, color management, and the specification of color standards. They provide a standardized and objective way to quantify color, allowing for consistent communication and reproduction of colors across different devices and environments.