IEEE Trans Image Process - Power-constrained contrast enhancement for emissive displays based on histogram equalization.

Tópicos

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Resumo

A power-constrained contrast-enhancement algorithm for emissive displays based on histogram equalization (HE) is proposed in this paper. We first propose a log-based histogram modification scheme to reduce overstretching artifacts of the conventional HE technique. Then, we develop a power-consumption model for emissive displays and formulate an objective function that consists of the histogram-equalizing term and the power term. By minimizing the objective function based on the convex optimization theory, the proposed algorithm achieves contrast enhancement and power saving simultaneously. Moreover, we extend the proposed algorithm to enhance video sequences, as well as still images. Simulation results demonstrate that the proposed algorithm can reduce power consumption significantly while improving image contrast and perceptual quality.

Resumo Limpo

powerconstrain contrastenhanc algorithm emiss display base histogram equal propos paper first propos logbas histogram modif scheme reduc overstretch artifact convent techniqu develop powerconsumpt model emiss display formul object function consist histogramequ term power term minim object function base convex optim theori propos algorithm achiev contrast enhanc power save simultan moreov extend propos algorithm enhanc video sequenc well still imag simul result demonstr propos algorithm can reduc power consumpt signific improv imag contrast perceptu qualiti

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