一种用于低亮度显示器的HDR10图像亮度映射算法  

An HDR 10 Image Brightness Mapping Algorithm for Low Brightness Displays

作　　者：陈姿伶 CHEN Ziling(Shenzhen Konka Electronic Technology Co.,Ltd.,Shenzhen 518053,China)

机构地区：[1]深圳康佳电子科技有限公司,广东深圳518053

出　　处：《电视技术》2023年第8期47-50,共4页Video Engineering

摘　　要：高动态范围(High Dynamic Range,HDR)技术相比标准动态范围(Standard Dynamic Range,SDR)技术具有更宽的色彩范围、更大的图像对比度,但受显示器亮度的限制,无法良好呈现HDR 10图像的显示效果。因此,利用输入信息与高亮度图像信息阈值的关系,根据显示器的峰值亮度对HDR 10图像的输入亮度进行重新映射,使大于阈值的高亮度图像像素采用第二映射函数输出,小于阈值的低亮度图像像素采用第一映射函数输出,可以使HDR 10图像在高亮和暗部图像场景中具有更好的可见性,从而提高HDR 10图像在低亮度显示器上的显示效果。Compared with Standard Dynamic Range(SDR)technology,High Dynamic Range(HDR)technology has a wider color range and greater image contrast,but limited by the brightness of the display,the display effect of HDR 10 image can not be well presented.Therefore,this paper uses the relationship between the input information and the threshold of high-brightness image information to remap the input brightness of HDR 10 image according to the peak brightness of the display,so that high-brightness image pixels larger than the threshold are output by the second mapping function,and low-brightness image pixels smaller than the threshold are output by the first mapping function.HDR 10 images have better visibility in high-light and dark image scenes,thereby improving the display effect of HDR 10 images on low-brightness monitors.

关 键 词：低亮度显示器 HDR 10 映射函数 高亮度图像信息阈值 

分 类 号：TP311.1[自动化与计算机技术—计算机软件与理论]