Back to articles
Articles
Volume: 12 | Article ID: art00046
Image
Evaluation of Smoothness in Color Gradation on Multiprimary Display
  DOI :  10.2352/CIC.2004.12.1.art00046  Published OnlineJanuary 2004
Abstract

Multiprimary displays, which are developed recently, enable to reproduce expanded color gamut using more than three primary colors. To reproduce an image using the multiprimary display, a color conversion algorithm is needed to generate multiprimary control signals from colorimetric tristimulus values. Several color conversion algorithms have been proposed, which give a unique set of multiprimary control signals to reproduce a specified color. When a smooth gradation is displayed, however, we sometimes perceive a contour-like artifact, which is called “pseudo contour.” The pseudo contour affects the image quality of multiprimary displays especially when smooth tonal change is reproduced. The pseudo contour is caused by the device profile error and the difference of the color matching functions of actual observers from the standard observer, but its appearance depends on the color conversion algorithms. Therefore, we propose a method to predict the appearance of the pseudo contour and evaluate the color conversion algorithms proposed before. The experimental results demonstrate that the predicted appearance of the pseudo contour is in good agreement with the visual observation.

Subject Areas :
Views 3
Downloads 0
 articleview.views 3
 articleview.downloads 0
  Cite this article 

Junya Takiue, Shingo Sugino, Yuri Murakami, Takashi Obi, Masahiro Yamaguchi, Nagaaki Ohyama, "Evaluation of Smoothness in Color Gradation on Multiprimary Displayin Proc. IS&T 12th Color and Imaging Conf.,  2004,  pp 257 - 264,  https://doi.org/10.2352/CIC.2004.12.1.art00046

 Copy citation
  Copyright statement 
Copyright © Society for Imaging Science and Technology 2004
72010350
Color and Imaging Conference
color imaging conf
2166-9635
Society of Imaging Science and Technology
7003 Kilworth Lane, Springfield, VA 22151, USA