Date

Place

[18-4]
17:05 ~ 17:20
Title:Chromaticness-Adaptive RGB-to-RGBW Conversion
Lin Li, Ronggang Wang (Peking Univ., China), MingJong Jou, ShenSian Syu, Hao Li, and Yufeng Jin (Shenzhen China Star Optoelectronics Tech. Co., Ltd., China)
Abstract: This paper proposes chromaticness-adaptive RGB-to-RGBW conversion that preserves the human color perception within a predetermined level of color distortion for RGBW displays. The proposed method mainly consists of two stages. In the first stage, the input data is firstly linearly scaled by the de-gamma processing and adjusted to the standard sRGB color space according to the display panel parameters; then, the white spectra is extracted from the square of the minimum or half of the maximum value of the square of the RGB primary components; at last, the maximum intensity level involving no color distortion from the common components of the RGB primary colors is searched and all the pixels are uniformly amplified by a global gain. In the second stage, an additional gain is added to each pixel based on its chromaticness and the color distortion is controlled with a predetermined level. After the above two stages, the final output image is obtained by the gamma correction.?
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