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[Licence| Download | New Version Template] acgd_v1_0.gz(38 Kbytes)
Manuscript Title: (theta, delta) uniform scale chromaticity diagram.
Authors: C. Oleari, G. Formaleoni
Program title: COLORJND
Catalogue identifier: ACGD_v1_0
Distribution format: gz
Journal reference: Comput. Phys. Commun. 69(1992)112
Programming language: C.
Computer: IBM PC.
Operating system: MS-DOS.
Peripherals: disc.
Keywords: Optics, Color, Colorimetry, Chromaticity diagram, Color uniform scale.
Classification: 18.

Nature of problem:
Realization of a uniform scale chromaticity diagram starting from a tristimulus space with non zero curvature.

Solution method:
The non uniformity of scale in the usual chromaticity diagrams is a very old problem in colour measurements. This program computes the transformation from the CIE 1931 (x,y)-chromaticity diagram to the recent uniform scale (theta, delta) diagram and vice versa. Moreover the program evaluates the most important colorimetric quantities for a comparison with the experimental data. Finally the chromatic gamut needed to TV applications is shown.