(θ, δ) uniform-scale chromaticity diagram

Abstract
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 (θ, δ) 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 for TV applications is shown.

Title of program: COLORJND
Catalogue Id: ACGD_v1_0

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

Versions of this program held in the CPC repository in Mendeley Data
ACGD_v1_0; COLORJND; 10.1016/0010-4655(92)90133-J

This program has been imported from the CPC Program Library held at Queen's University Belfast (1969-2019)

摘要：
常规色度图的尺度非均匀性是颜色测量领域中一个由来已久的问题。本程序可实现CIE 1931 (x,y)色度图到新型均匀尺度(θ,δ)色度图的相互转换，反之亦然。此外，本程序可计算关键色度参量，用于与实验数据开展对比分析。最后，程序将展示电视应用所需的色域范围。

程序名称：COLORJND
目录编号：ACGD_v1_0

问题本质：
基于存在非零曲率的三刺激空间，构建均匀尺度色度图。

Mendeley数据中的CPC程序库收录的本程序版本：
ACGD_v1_0; COLORJND; 10.1016/0010-4655(92)90133-J

本程序源自贝尔法斯特女王大学维护的CPC程序库（1969-2019年）。