Colorimetry

This section covers Optiland’s colorimetry utilities, which convert spectral data into perceptual color quantities. These tools are used, for example, to render extended-source or image-simulation results as realistic sRGB colors rather than raw spectral irradiance.

The core engine converts a spectrum sampled over wavelength into CIE 1931 XYZ tristimulus values (spectrum_to_xyz()), which can then be converted to chromaticity coordinates (xyz_to_xyY()) or to display-ready sRGB (xyz_to_srgb()). Standard CIE color-matching functions and illuminants are provided in colorimetry.constants, and colorimetry.plotting provides helpers for plotting results on the CIE 1931 chromaticity diagram.

colorimetry.core	Colorimetry calculation engine.
colorimetry.constants	Standard colorimetric data (CIE).
colorimetry.plotting	Colorimetry plotting utilities.