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Proceedings Paper

Color enhancement for portable LCD displays in low-power mode
Author(s): Kuang-Tsu Shih; Tai-Hsiang Huang; Homer H. Chen
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Paper Abstract

Switching the backlight of handheld devices to low power mode saves energy but affects the color appearance of an image. In this paper, we consider the chroma degradation problem and propose an enhancement algorithm that incorporates the CIECAM02 appearance model to quantitatively characterize the problem. In the proposed algorithm, we enhance the color appearance of the image in low power mode by weighted linear superposition of the chroma of the image and that of the estimated dim-backlight image. Subjective tests are carried out to determine the perceptually optimal weighting and prove the effectiveness of our framework.

Paper Details

Date Published: 24 September 2011
PDF: 8 pages
Proc. SPIE 8135, Applications of Digital Image Processing XXXIV, 81350V (24 September 2011); doi: 10.1117/12.895550
Show Author Affiliations
Kuang-Tsu Shih, National Taiwan Univ. (Taiwan)
Tai-Hsiang Huang, National Taiwan Univ. (Taiwan)
Homer H. Chen, National Taiwan Univ. (Taiwan)


Published in SPIE Proceedings Vol. 8135:
Applications of Digital Image Processing XXXIV
Andrew G. Tescher, Editor(s)

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