1. Edge preserving smoothing;Nagao,1978
2. Extraction of multiple regions by smoothing in selected neighborhoods;Tomita;IEEE Trans. Syst. Man Cybernet.,1977
3. Iterative methods in image analysis;Rosenfeld;Pattern Recognition,1978
4. The dynamic clusters method in non-hierarchial clustering;Diday;Int. J. Comput. Inform. Sci.,1973
5. Rotationally invariant image operators;Beaudet,1978