Metric color spaces have been determined to be significantly non-uniform in the hue attribute of color appearance. Several independent sources have confirmed the non-uniformity. A data set was obtained during the course of this thesis work that contains the largest sampling of color space to date which can be used to compare models of color appearance. The data set obtained was compared to existing data sets and found to correspond closely. Lookup table methods were employed to test significant differences between data sets. A simple modeling approach was taken based on commonly understood color space models and knowledge of the visual system. Several color spaces can be derived using the simple model, and one was chosen that models hue uniformity very well and has other desirable attributes. This new color space is named IPT. Many visual data sets were plotted in the IPT color space and all show improved performance over industry standard color spaces. The IPT color space has applications in color data representation, gamut mapping, and color appearance modeling.
Library of Congress Subject Headings
Colorimetry; Color; Colorimetric analysis
Department, Program, or Center
Chester F. Carlson Center for Imaging Science (COS)
Ebner, Fritz, "Derivation and modelling hue uniformity and development of the IPT color space" (1998). Thesis. Rochester Institute of Technology. Accessed from
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