AN EXPLANATION OF THE EFFECTS OF SQUASHING IN LIMITED ANGLE TOMOGRAPHY

被引：4
|
作者：
OLSON, T [1 ]
JAFFE, JS [1 ]
机构：
[1] UNIV CALIF SAN DIEGO,SCRIPPS INST OCEANOG,MARINE PHYS LAB A005,LA JOLLA,CA 92093
来源：
IEEE TRANSACTIONS ON MEDICAL IMAGING | 1990年 / 9卷 / 03期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1109/42.57761
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
This paper explains the effects of Squashing, an algorithm introduced by J. A. Reeds and L. A. Shepp |1]. It is proven that Squashing induces a weight function upon the projections. Intuitive and numerical evidence is presented which shows that this weight function is not desirable at limited angles. Finally, a method to counteract the effects of the weight function and extend the usefulness of the algorithm to 120 degrees is proposed. © 1990 IEEE
引用
收藏
页码：242 / 246
页数：5
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