反演解析法提高CCD成像分辨率的噪声影响研究

Research on Noise Influence upon Inversion Analysis for Enhancement of CCD Resolution

反演解析法是提高CCD成像分辨率的方法之一。但是,加在低分辨率图像上的随机噪声会对合成的高分辨率图像产生不可预知的影响。文中首先介绍了反演解析法原理,然后讨论了噪声的影响机制。并且,为了对噪声影响进行数值化分析,提出了一个噪声影响评价函数。最后,以该函数为基础,通过计算机仿真实验,找到了合成图像受随机高斯白噪声影响的规律。

Inversion analysis is one of the methods for the enhancement of CCD resolution. But the random noise added to low resolution images will have unpredictable influence over the synthesized high-resolution images. The principle of inversion analysis is introduced. Then, the influence mechanism of noise is discussed and a noise influence evaluation function is put forward for the digital analysis of noise influence. Finally, the law that random Gaussian white noise influencing synthesized images is found through simulation examples based on the noise influence evaluation function.