Morphological pseudo bandpass image decompositions

R. Alan Peters

doi:10.1117/12.231976

1 April 1996 Morphological pseudo bandpass image decompositions

R. Alan Peters

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Journal of Electronic Imaging, Vol. 5, Issue 2, (April 1996). https://doi.org/10.1117/12.231976

Abstract

A morphological bandpass filter would, ideally, strictly limit the sizes of all features in an image to lie between the sizes of two similarly shaped but differently scaled structuring elements. A morphological bandpass decomposition of an image would be a disjoint set of morphological bandpass images with features of increasing size such that the set sums to the original image. Such strict bandpass limitations in size are not possible in general for arbitrary structuring element families. Hence, a true bandpass decomposition is not generally possible. Pseudo bandpass decompositions, in which intraband size limitations are relaxed, are possible and can be useful image analysis tools. Four pseudo bandpass image decompositions are described, one of which, the opening spectrum, is relatively well known and three of which are new. They are a decomposition derived from iteration of the top-hat transform, a morphological reconstruction of a Euclidean (quasi) granulometry, and a reconstruction of the opening spectrum. Properties of the opening spectrum and the top-hat transform are reviewed. The top-hat spectrum is defined, some of its properties are deduced, and it is compared to the opening spectrum. The reconstruction-based decompositions are defined and compared to the others. Comparative examples are given and a practical use described.

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R. Alan Peters "Morphological pseudo bandpass image decompositions," Journal of Electronic Imaging 5(2), (1 April 1996). https://doi.org/10.1117/12.231976

Published: 1 April 1996

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