Share Email Print
cover

Proceedings Paper

Evaluation of smooth tonal change reproduction on multiprimary display: comparison of color conversion algorithms
Author(s): Yuri Murakami; Naoaki Hatano; Jyunya Takiue; Masahiro Yamaguchi; Nagaaki Ohyama
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Multi-primary displays, which enable to expand their color gamut, have a degree of freedom in the selection of the device control signals to reproduce a set of tristimulus values. To reproduce a given tristimulus values on a multi-primary display, we need a color conversion algorithm which gives a unique set of device control signals; several algorithms with different characteristics have been proposed. However, they do not guarantee that control signals change smoothly even when tristimulus values change smoothly. Such signal discontinuity is pointed out as a cause of pseudo contour appeared in smooth tonal change when color matching functions of observers are deviated from the standard one or when device profiles include some error. In this article, first, the relation between signal discontinuity and pseudo contour is theoretically analyzed. Then a comparative evaluation is performed on the smoothness of the gradation patterns among three color conversion algorithms. As a result of the comparison, it was confirmed that a method that generates smooth signal all over the color gamut gave the smoothest gradation both objectively and subjectively.

Paper Details

Date Published: 28 May 2004
PDF: 9 pages
Proc. SPIE 5289, Liquid Crystal Materials, Devices, and Applications X and Projection Displays X, (28 May 2004); doi: 10.1117/12.527190
Show Author Affiliations
Yuri Murakami, Tokyo Institute of Technology (Japan)
Akasaka Natural Vision Research Ctr. (Japan)
Naoaki Hatano, Tokyo Institute of Technology (Japan)
Jyunya Takiue, Tokyo Institute of Technology (Japan)
Masahiro Yamaguchi, Tokyo Institute of Technology (Japan)
Akasaka Natural Vision Research Ctr. (Japan)
Nagaaki Ohyama, Tokyo Institute of Technology (Japan)
Akasaka Natural Vision Research Ctr. (Japan)


Published in SPIE Proceedings Vol. 5289:
Liquid Crystal Materials, Devices, and Applications X and Projection Displays X
Ming Hsien Wu; Liang-Chy Chien, Editor(s)

© SPIE. Terms of Use
Back to Top