gamut-volume-python

Gamut volume calculation and visualisation in Python

This project is based on Matlab code from IDMS V1.1 Section 5.32,
which can be obtained at DOI: 10.55410/bjxb8678

Pre-requisites

• Python
• Jupyter
• numpy
• matplotlib
• colour-science

Function reference

cgats

Read from and write to a CGATS data file, the standard ASCII CGATS.17 file format is recommended.

make_gamut_envelope

Convert RGB/XYZ data to RGB/3D color space coordinate data.

• Supported model:
  • CIELAB-D50: RGB/LAB
  • CAM16-UCS: RGB/Jab
  • ICtCp: RGB/ICtCp

get_volume

Take the RGB/3D color space coordinate data as input and return the gamut volume in delta E3.
The Moller-Trumbore ray-triangle intersection algorithm is used.
If a reference is provided, calculate the gamut volume coverage.

plot_rings

Convert the gamut volume into a 2D gamut ring graph.
If a reference is provided, both the gamut volume and gamut volume coverage will be shown in the graph title.