Image analysis – Image enhancement or restoration – Object boundary expansion or contraction
Patent
1997-07-16
2000-04-04
Rogers, Scott
Image analysis
Image enhancement or restoration
Object boundary expansion or contraction
382173, 382199, 382205, 382128, 382130, 382132, G06T 520, G06T 530, G06K 944, G06K 946
Patent
active
060470909
ABSTRACT:
A method of processing a digital image representing ribbon-shaped objects of non-uniform intensity contrasting with a background of lower intensity includes an automatic segmentation phase having one or more morphological opening operations effected, respectively, with one or more three-dimensional structuring elements. The latter have a two-dimensional base parallel to the image plane and have a non-binary intensity function in a third dimension. Preferably, the automatic segmentation phase is carried out by means of a set of two-dimensional spatial structuring elements with a third intensity dimension. The set contains N anisotropic structuring elements oriented from .pi./N to .pi./N and one isotropic structuring element.
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Renfrew Dwight H.
Rogers Scott
U.S. Philips Corporation
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