DocumentCode
1527616
Title
An explanation of the effects of Squashing in limited angle tomography
Author
Olson, Tim ; Jaffe, Jules S.
Author_Institution
Div. of Math., Auburn Univ., AL, USA
Volume
9
Issue
3
fYear
1990
fDate
9/1/1990 12:00:00 AM
Firstpage
242
Lastpage
246
Abstract
The effects of Squashing, an algorithm introduced by J.A. Reeds and L.A. Shepp (see ibid., vol.MI-6, no.2, p.89-97, June 1987), are described. It is proven that Squashing induces a weight function upon the projections. Intuitive and numerical evidence is presented showing that this weight function is not desirable at limited angles. A method to counteract the effects of the weight function and extend the usefulness of the algorithm to 120° is proposed
Keywords
computerised tomography; Squashing algorithm effects; limited angle tomography; medical diagnostic imaging; projections; weight function; Goniometers; Helium; Integral equations; Laboratories; Mathematics; Sea measurements; Tomography;
fLanguage
English
Journal_Title
Medical Imaging, IEEE Transactions on
Publisher
ieee
ISSN
0278-0062
Type
jour
DOI
10.1109/42.57761
Filename
57761
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