旋转扫频转动序列波带图  

Rotational Sweep Rotating Zone Plate Sequence

作　　者：李桂苓[1] 周志河[1] 

机构地区：[1]天津大学

出　　处：《通信学报》1995年第5期112-115,共4页Journal on Communications

基　　金：国家自然科学基金

摘　　要：本文提出了在极坐标系中建立波带图数学模型的原理和方法。提出的新型波带图含各种空间频率成分，以不同速度真实转动；参数与图像的时、空间特性有定量关系，并对像素形状做了预校正；数据磁带格式符合国际交换标准。实验表明，该波带图适于评价ＨＤＴＶ系统。This paper presents the principle and method of setting up a mathematical model of rotational sweep rotating zone plate in polar coordinate system. The new zone plate developed contains all spatial fraquencies,and can truly rotate at different speeds.There is quantitative relationship between the zone plate parameters and the time-space characteristics of the image,and the precorrection on the pixel shape is also provided. The data of the zone plate are stored in magnetic tape conforming international exchange standard.Experiments show that the new zone plate can be used to evaluate HDTV system.

关 键 词：高清晰度电视 波带图 信源编码 电视图像 

分 类 号：TN941.1[电子电信—信号与信息处理]