Several optimal spatial filters that could be used in a coherent imaging system to remove post-detection linear distortions are obtained and their performance assessed. It is shown that the minimum mean square error filter approximates the usual inverse filter for low-contrast images. The performance of these compensation filters is illustrated by use of examples of one-dimensional signals.
© 1979 Optical Society of America
Bahaa E. A. Saleh and Wayne C. Goeke, "Coherent optical compensation of post-detection spatial distortion," J. Opt. Soc. Am. 69, 1172-1177 (1979)