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Openings can introduce zero crossings in boundary curvature

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1 Author(s)
Nacken, P.F.M. ; TNO Inst. for Human Factors, Soesterberg, Netherlands

Chen and Yan (1989) presented a result on zero crossings of boundary curvature under morphological openings. In this correspondence, it is shown, by means of a counter example, that this result is not correct. An analysis of the counter example shows where Chen and Yan go wrong and determines a class of images for which their theorem holds

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Pattern Analysis and Machine Intelligence, IEEE Transactions on  (Volume:16 ,  Issue: 6 )