Dynamic dimming algorithm for liquid crystal display based on local brightness of image

Chen, 赵 晨 Zhao; Guo-qiang, 吕国强 Lyu; Lei, 吴 磊 Wu; Li-ming, 诸黎明 Zhu; Qi-bin, 冯奇斌 Feng

doi:10.3788/yjyxs20203503.0234

Cited by 2 publications

(1 citation statement)

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“…Zhang et al [7] proposed a new adaptive local dimming method to change the backlight brightness value in combination with human visual characteristics. Zhao [8] proposed a local dimming algorithm based on image local brightness. Although some scholars at home and abroad have proposed some local dimming algorithms, there is still much room for improvement in energy saving and improving display quality.…”

Section: Introductionmentioning

confidence: 99%

Local Dimming Algorithm of Automotive LCD Instrument Based on Otsu and Maximum Entropy

Liu

Chun-qiu

2022

Journal of Nanomaterials

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In order to reasonably reduce the energy consumption of automotive LCD instrument and improve the display quality, a new local dimming algorithm is proposed in this paper. Firstly, the gray image of the input image is obtained by using the maximum principle, and then, the LED backlight brightness value is obtained by using Otsu method and maximum entropy method. The BMA backlight smoothing algorithm is improved by combining bilinear interpolation algorithm, and the dimming image is obtained by using pixel compensation algorithm based on logarithm. Then, for low brightness images, high brightness images, low contrast images, and high contrast images, typical algorithms are used to simulate and compare, and the image processing effects of various local dimming algorithms are analyzed. Finally, the entropy weight method is used to objectively evaluate the local dimming algorithm. The results show that the new local dimming algorithm reduces the energy consumption and improves the display quality, which verifies the effectiveness of the proposed algorithm.

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Section: Introductionmentioning

confidence: 99%