CRT显示器显示图像对比度的研究  

Research of Contrast Definition of CRT Monitor Output Image

作　　者：姚军财[1] 申静[2] 

机构地区：[1]陕西理工学院物理系,陕西汉中723000 [2]陕西理工学院计算机科学与技术系,陕西汉中723000

出　　处：《电视技术》2011年第1期45-47,59,共4页Video Engineering

基　　金：国家自然科学基金项目(10447005);陕西省教育厅专项科研基金资助项目(2010JK463)

摘　　要：基于CRT显示器的显色特性,根据对立色的特点,采用CIELAB色空间作为表色系统,以CIE1976LAB色差公式为基础,提出了一种对立色彩色图像的对比度定义,通过对实际色块对比度的计算和人眼觉察以及与国外研究结果对比分析表明,此定义不仅同时考虑了图像亮度和色度的对比度,并且理论计算值与人眼视觉感受结果保持较好的一致性,计算简单,是一种实用的显示器输出图像对比度定义。According to the characteristics of opposite color and taking CIELAB color space as the describing color system, a contrast definition of opposite color image is presented based on the color display characteristics and CIELAB color-difference formula. By computing contrast of color blocks with the definition and the human eye perceived, and comparing with foreign studies, it shows that this definition can not only take into account the brightness and chroma contrast, but also calculate value and the human visual experience showed good consistency, and the calculation is relatively simple, which is a very practical contrast definition of the monitor output image.

关 键 词：对比度 颜色空间 色度 CIELAB 

分 类 号：TN948.5[电子电信—信号与信息处理] TP334[电子电信—信息与通信工程]