Color enhancement for portable LCD displays in low-power mode

Kuang-Tsu Shih; Tai-Hsiang Huang; Homer H. Chen

doi:10.1117/12.895550

24 September 2011 Color enhancement for portable LCD displays in low-power mode

Kuang-Tsu Shih, Tai-Hsiang Huang, Homer H. Chen

Proceedings Volume 8135, Applications of Digital Image Processing XXXIV; 81350V (2011) https://doi.org/10.1117/12.895550
Event: SPIE Optical Engineering + Applications, 2011, San Diego, California, United States

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.

Citation Download Citation

Kuang-Tsu Shih, Tai-Hsiang Huang, and Homer H. Chen "Color enhancement for portable LCD displays in low-power mode", Proc. SPIE 8135, Applications of Digital Image Processing XXXIV, 81350V (24 September 2011); https://doi.org/10.1117/12.895550

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