Digital image smoothing and the sigma filter

Rosenfeld, 1976

Andrews, 1977

Jain, 1977, A semicausal model for recursive filtering of two dimensional images, IEEE Trans. Comput., C-26, 10.1109/TC.1977.1674844

Pratt, 1978

Nagao, 1979, Edge preserving smoothing, Computer Graphics Image Processing, 9, 394, 10.1016/0146-664X(79)90102-3

Wang, 1981, Image enhancement by gradient inverse weighted smoothing scheme, Computer Graphics Image Processing, 15, 167, 10.1016/0146-664X(81)90077-0

McDonnall, 1981, Box-filtering techniques, Computer Graphics Image Processing, 17, 65, 10.1016/S0146-664X(81)80009-3

Lee, 1980, Digital image enhancement and noise filtering by use of local statistics, IEEE Trans. Pattern Anal. Mach. Intell., PAMI-2, 10.1109/TPAMI.1980.4766994

Lee, 1981, Refined filtering of image noise using local statistics, Computer Graphics Image Processing, 15, 380, 10.1016/S0146-664X(81)80018-4

Graham, 1966, Snow removal—A noise-stripping process for picture signal, IRE Trans. Inf. Theor., 8, 129, 10.1109/TIT.1962.1057690

Prewitt, 1970, Object enhancement and extraction

Lev, 1977, Interactive enhancement of noisy images, IEEE Trans. Syst. Man Cybern., SMC-7, 435, 10.1109/TSMC.1977.4309740

Goodman, 1976, Some fundamental properties of speckles, J. Opt. Soc. Amer., 66, 10.1364/JOSA.66.001145

Lee, 1981, Speckle analysis and smoothing of synthetic aperture radar image, Computer Graphics Image Processing, 17, 24, 10.1016/S0146-664X(81)80005-6

Lee, 1983, A simple speckle smoothing algorithm for synthetic aperture radar images, IEEE Trans. Syst. Man Cybern., vol. SMC-13, 85, 10.1109/TSMC.1983.6313036