摘要
为了获得大数据量、高速图像下传的高分辨率CCD相机的实时传递函数,提出了一种基于图像快视与采集记录系统的CCD相机成像质量自动评价方法。应用计算机高速信息采集和存储技术,在分析对比度传递函数和调制传递函数之间关系的基础上,利用高对比度矩形靶标法计算CCD相机的传递函数,设计了传递函数实时计算系统,从而完成对CCD相机整机系统的像质实时评价。实验结果表明:当像元数达到20 000个,采集速度达到3.2Gb/s时,该方法能够高速率并且准确实时地计算传递函数。
In order to obtain real-time transfer function（MTF） of CCD camera,an automatic evaluation method of image quality based on high-resolution CCD camera is proposed.High-speed information acquisition and storage technology is applied in the test,transfer function（MTF） of CCD camera is calculated by the high contrast rectangular target method based on analyzing the relation of contrast transfer function and modulation transfer function,and real-time computing system for transfer function is designed.Thus,real-time evaluation of image quality based on CCD camera system is achieved.The experiment results show that when the number of pixels is up to 20 000 and the acquisition speed reaches 3.2 Gb/s,the MTF can be calculated by the method fastly and accurately in real time.
出处
《半导体光电》
CAS
CSCD
北大核心
2011年第5期745-748,共4页
Semiconductor Optoelectronics
关键词
CCD相机
实时计算
调制传递函数
对比度传递函数
CCD camera
real-time calculation
modulation transfer function
contrast transfer function
