What do Tristimulus Values (X, Y, Z) represent?

Tristimulus Values (X, Y, Z) represent a quantifiable measurement of the amounts of three primary colors of light—specifically, Red, Green, and Blue—as perceived by the human eye. This color theory is based on the observation that any color can be created by combining varying intensities of these three primary colors.

The values X, Y, and Z are derived from the integration of the spectral power distribution of a light source with the color matching functions that reflect human color perception. In practical terms, these values provide a standardized way of describing colors in a way that can be universally understood in fields like photography, design, and digital imaging.

The other choices do not accurately reflect what Tristimulus Values signify. While they involve aspects of image characteristics, none of them specifically address the combination of Red, Green, and Blue light that Tristimulus Values fundamentally represent.