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Spatially-variant m...
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Norell, Kristin,1980-Uppsala universitet,Centrum för bildanalys,Datoriserad bildanalys
(author)
Spatially-variant morphological operations on binary images based on the polar distance transform
- Article/chapterEnglish2008
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IEEE computer society,2008
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LIBRIS-ID:oai:DiVA.org:uu-88066
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https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-88066URI
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Language:English
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Summary in:English
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Subject category:ref swepub-contenttype
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Subject category:kon swepub-publicationtype
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Binary mathematical morphology can be computed by thresholding a distance transform, provided that the distance transform is a metric. Here we show that the polar distance transform is a metric and use it for morphological operations. The polar distance transform varies with the spatial coordinates of the image, resulting in spatially-variant morphology. In this distance transform each pixel is related to an image origin. We prefer angular propagation over radial, thus we construct structuring elements that are elongated in the angular direction, which is useful when circular segments are handled. We show an example where segments of annual rings on a log end face are connected using mathematical morphology based on the polar distance transform.
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Lindblad, JoakimUppsala universitet,Centrum för bildanalys,Datoriserad bildanalys(Swepub:uu)joali534
(author)
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Uppsala universitetCentrum för bildanalys
(creator_code:org_t)
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In:ICPR 2008: IEEE computer society9781424421756
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ICPR 2008
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