point-spread function psf

基本解释

Point-spread function(PSF) plays a key role in image restoration. As a result, prior knowledge and posteriori estimation of PSF is usually used to restore image.
在图像恢复技术中，点扩展函数（PSF）是影响图像恢复结果的关键因素，所以常常利用先验知识和后验判断方法估计PSF函数来恢复图像。
For the conventional channel equalization techniques, the channel point-spread function (PSF) must be determined firstly, but it is almost impossible to obtain the PSF in practice.
盲均衡技术实际求解比较困难，一般信道均衡使用传统均衡技术，因而必须首先知道点扩展函数，但实际条件下点扩展函数不可能知道。
The primary difficulty with blind image restoration is insufficient information. This calls for proper incorporation of apriori knowledge about the image and the point-spread function(PSF).
盲图像恢复的主要困难是信息不足，而为了恢复图像和确定点扩散函数需要适当的先验知识。