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Browsing by Author "Lu, Po-I"

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    Super-Gaussian light spread function for high dynamic range displays
    (2008)
    Cheng, Yu-Kuo
    ;
    Lu, Yen-Hsing
    ;
    Lu, Po-I
    ;
    Tien, Chung-Hao
    ;
    Shieh, Han-Ping D.
    Super-Gaussian light spread function was designed for high dynamic range liquid crystal displays. A dual-liquid-crystal-panel system was constructed to simulate an HDR display, and to evaluate the implementation of the proposed super Gaussian and a general Gaussian distributions. According to the results, luminance uniformity, and processing time of super-Gaussian LSF are superior to those of Gaussian LSF by factors of 1.55 and 178, respectively. Contrast ratio is improved by a factor about 2 to 4.15 as well. In addition, the undesired artifact, grid lines, can be suppressed to be invisible.