采样目标统计特性与CCD探测系统设计

Design methods of CCD detection system and the statistical characteristics of sampled targets

基于信息理论研究采样成像系统 ,寻求提高图像质量的新途径。建立了图像采集系统分析模型 ,计算机仿真分析图像采集系统端到端信息率与采样目标统计特性的关系。研究结果表明 ,当采样间隔接近采样目标的平均空间细节时 ,图像采集系统端到端信息率最大 ,图像质量最理想。

To seek a new way of improving image quality, the sampled imaging system based on information theory is studied. The analysis model of image gathering system is proposed. The relationship of system end-to-end information rate with target statistical characteristics is examined by computer simulation. The research results show that the end-to-end information rate reaches its peak value when sampling interval is near to the mean spatial details of the target, where the image quality is ideal.