液晶与显示2018，Vol.33Issue(12)：1019-1025,7.DOI:10.3788/YJYXS20183312.1019
基于S曲线全局动态调光的改进算法
Improved algorithm based on S-curve global dynamic dimming
摘要
Abstract
The S-curve global dynamic dimming algorithm can reduce the power consumption of the LED liquid crystal display, and at the same time improve the static contrast of the displayed image, but the algorithm will cause partial image color distortion and detail loss.To solve this problem, this paper proposes an improved S-curve algorithm combining image detail layer separation and visual saliency theory.Firstly, the original image is converted to the HSV color space for luminance and chrominance separation;then, the base layer and the detail layer of the image are obtained by bilateral filtering on the image luminance component, and the base layer is subjected to dynamic range stretching using the S curve to realize pixel compensation.The detail layer uses the visual saliency theory to perform partitioning and weight enhancement to compensate for the loss of detail caused by pixel compensation.Finally, the processed layers are converted to RGB space display.The simulation results of the algorithm are compared with the results of the original S-curve algorithm.The results show that the proposed algorithm solves the problem of color distortion and detail loss in some images based on the original algorithm′s power consumption reduction and static contrast enhancement level, and improves the visual display effect of the image.The simulation results of the algorithm have greater information entropy and average gradient.关键词
全局调光/液晶显示/视觉显著性/对比度Key words
global dimming/liquid crystal display/visual saliency/contrast分类
信息技术与安全科学引用本文复制引用
童正,吴磊,赵晨,吕国强..基于S曲线全局动态调光的改进算法[J].液晶与显示,2018,33(12):1019-1025,7.基金项目
安徽省科技重大专项(No.17030901003) （No.17030901003）
