Title
Automatic multiple threshold scheme for segmentation of tomograms Automatic multiple threshold scheme for segmentation of tomograms
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
conferenceObject
Publication
San Diego, Calif. :SPIE, [*]
Subject
Physics
Source (book)
Proceedings of SPIE Medical Imaging: Physics of Medical Imaging, Medical Imaging 2007: Image Processing / Pluim, Josien P.W. [edit.]
ISBN
978-0-8194-6630-3
Article Reference
65123D
ISI
000246288500118
Carrier
E-only publicatie
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
Tomographic reconstructions, which are generally gray-scale images, are often segmented as to extract quantitative information, such as the shape or volume of image objects. At present, segmentation is usually performed by thresholding. However, the process of threshold selection is somewhat arbitrary and requires human interaction. In this paper, we present an algorithmic approach for automatically selecting the segmentation thresholds by using the available tomographic projection data. Assuming that each material (i.e., tissue type) in the sample has a characteristic, approximately constant gray value, thresholds are computed for which the segmented image corresponds optimally with the projection data.
E-info
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