39.4: Inverse of Mapping Function (IMF) Method for Image Quality Enhancement of High Dynamic Range LCD TVs

A high dynamic range liquid crystal display (HDR‐LCD) can much enhance the contrast ratio of the image on a locally controlled dynamic backlight. A novel method, inverse of mapping function (IMF), was demonstrated to further improve the HDR image quality from the information of each frame. By using...

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Bibliographic Details
Published in:SID International Symposium Digest of technical papers 2007-05, Vol.38 (1), p.1343-1346
Main Authors: Lin, Fang-Cheng, Liao, Cheng-Yu, Liao, Lin-Yao, Huang, Yi-Pai, Shieh, Han-Ping D., Tsai, Po-Jen, Wang, Te-Mei, Hsieh, Yao-Jen
Format: Article
Language:English
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Summary:A high dynamic range liquid crystal display (HDR‐LCD) can much enhance the contrast ratio of the image on a locally controlled dynamic backlight. A novel method, inverse of mapping function (IMF), was demonstrated to further improve the HDR image quality from the information of each frame. By using the IMF method, the image contrast ratio in a 37″ HDR‐LCD TV was successfully improved to ∼20,000:1 while maintaining high brightness and clear image details. Besides, for mass production purpose, the backlight of a 37″ HDR‐LCD TV was divide into 8×8 zones to reduce hardware computation complexity.
ISSN:0097-966X
2168-0159
DOI:10.1889/1.2785561