J4 ›› 2005, Vol. 27 ›› Issue (12): 90-91.

Online:2005-01-01 Published:2010-06-22

Abstract

Abstract:

This paper starts with the relations between mathematics morphology filter operators and approximation operators, points out that morphological dilate and erode, open and close can be regarded as dual approximation operators in the rough set theory, and presents some new operators. Good qualities are found of the new operators.

Key words: （rough set, similar relation, mathematical morphology, strong dilation, strong erosion）

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