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Visual Enhancement Using Constrained L0 Gradient Image Decomposition for Low Backlight Displays

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3 Author(s)
Soo-Chang Pei ; Grad. Inst. of Networking & Multimedia, Nat. Taiwan Univ., Taipei, Taiwan ; Chih-Tsung Shen ; Tzu-Yen Lee

We propose a system to enhance the visual quality of displays under low backlight. Our system can not only prolong the battery life but also enhance visual quality. First, we propose a constrained L0 gradient image decomposition to separate base layer and detail layer. Afterwards, we design a median-preserving gamma correction for compensation and a JND-based boosting for detail enhancement. Experimental results show that our system outperforms than the compared systems.

Published in:

Signal Processing Letters, IEEE  (Volume:19 ,  Issue: 12 )

Date of Publication:

Dec. 2012

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