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Proceedings Paper

Color preservation for tone reproduction and image enhancement
Author(s): Chengho Hsin; Zong Wei Lee; Zheng Zhan Lee; Shaw-Jyh Shin
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Paper Abstract

Applications based on luminance processing often face the problem of recovering the original chrominance in the output color image. A common approach to reconstruct a color image from the luminance output is by preserving the original hue and saturation. However, this approach often produces a highly colorful image which is undesirable. We develop a color preservation method that not only retains the ratios of the input tri-chromatic values but also adjusts the output chroma in an appropriate way. Linearizing the output luminance is the key idea to realize this method. In addition, a lightness difference metric together with a colorfulness difference metric are proposed to evaluate the performance of the color preservation methods. It shows that the proposed method performs consistently better than the existing approaches.

Paper Details

Date Published: 3 February 2014
PDF: 12 pages
Proc. SPIE 9015, Color Imaging XIX: Displaying, Processing, Hardcopy, and Applications, 90150B (3 February 2014); doi: 10.1117/12.2042432
Show Author Affiliations
Chengho Hsin, Feng Chia Univ. (Taiwan)
Zong Wei Lee, Feng Chia Univ. (Taiwan)
Zheng Zhan Lee, Feng Chia Univ. (Taiwan)
Shaw-Jyh Shin, Feng Chia Univ. (Taiwan)

Published in SPIE Proceedings Vol. 9015:
Color Imaging XIX: Displaying, Processing, Hardcopy, and Applications
Reiner Eschbach; Gabriel G. Marcu; Alessandro Rizzi, Editor(s)

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