数字电视图像清晰度  

Picture Definition of DTV

作　　者：李桂苓[1] 李秀敏[1] 赵希[1] 

机构地区：[1]天津大学电信学院,天津300072

出　　处：《电视技术》2005年第12期80-83,共4页Video Engineering

基　　金：天津市自然科学基金资助(033600511)

摘　　要：导出了以电视线表示的数字电视图像清晰度计算方法及其理论值,指出基于电子束扫描的CRT电视显像管与LCD,PDP,DLP,LCoS和OLED等固有分辨力显示器(屏)所显示图像的清晰度之间有很大不同,而测定电视图像清晰度不仅要合理设计和精确生成清晰度测试图,而且必须在规范的测试条件下采用正确的方法,并对测试数据进行处理。This paper educes the method for computing picture definition of DTV and its theoretical value which is expressed in TV line, and indicates that CRT TV based on electronic scanning is greatly different from those TV display devices or screens with intrinsic resolution such as LCD, PDP, DLP and LCoS in picture definition. When testing picture definition of DTV, we not only need design reasonably and create accurately definition test patterns, but also must adopt correct method to deal with those testing data in a normative test condition.

关 键 词：数字电视 图像清晰度 电视线 

分 类 号：TN949.197[电子电信—信号与信息处理]