Browsing by Author "Lin, Ching-Huan"

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High transmittance LC pixel design for multi-view 3D mobile display
(2008)
Mphepoe, Wallen
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Wu, Chi-Lin
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Huang, Yi-Pai
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Chuang, Shang-Chih
;
Chen, Cheng-Huan
Using a 6-view 3D mobile display, a modified LC pixel mode that increases transmittance and brightness uniformity for each viewing zone plus pixel electrode physical re-configuration capable of increasing Aperture Ratio were investigated The pixel mode utilized was the single-domain VA. In the modified case of the single domain VA mode with the reconfiguration, it was observed that by optimizing each pixel, the transmittance of the single-domain VA could be improved by more than 24% at relatively wide, mobile display, viewing angles from similar to 9 degrees to similar to 30 degrees compared with conventional multi-domain VA.
Image content adaptive color breakup index for field sequential color displays using a dominant visual saliency method
(2018-02-01)
Qin, Zong
;
Lin, Ying-Ju
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Lin, Fang-Cheng
;
Kuo, Chia-Wei
;
Lin, Ching-Huan
An index that can predict the perceptual visibility of color breakup for varying image content is valuable in field sequential color displays, whereas the current indices are usually for fixed patterns. To solve this problem, an image database containing 25 diverse reference images and 125 test cases with various color breakup visibility was first established. Next, visual experiments using a 240-Hz liquid crystal display were performed to acquire the subjective color breakup scores of the test cases. A theorem based on visual saliency theory was proposed that the color breakup perception is mainly determined by the image regions with visual saliency values higher than a certain threshold, called the dominant visual saliency regions. A computational model based on this theorem was developed to obtain objective color breakup scores of the test cases from retinal images with and without color breakup. An analysis of the objective and subjective results revealed a Pearson linear correlation coefficient as high as 0.82, which matches the top-level image quality assessment algorithms. Finally, the proposed color breakup index was used to benchmark against several mainstream field sequential color algorithms to determine their performances in color breakup suppression.
Liquid crystal panel for high efficiency autostereoscopic 3D displays
(2008-01-01)
Chuang, Shang-Chih
;
Chen, Cheng-Huan
;
Mphepoe, Wallen
;
Wu, Chi-Lin
;
Huang, Yi-Pai
This paper proposes a configuration of liquid crystal panel for 3D application with the viewing angle property of each pixel varied and optimized for the direction to the corresponding perspective view, and the light blocking area of each pixel is located in accommodation to the lenticular and barrier design. The simulation result shows better performance on efficiency and cross talk comparing to the similar 3D display using traditional liquid crystal panel with the same pixel count and pixel Size.