FOURIER-BESSEL HARMONIC EXPANSIONS FOR TOMOGRAPHY OF PARTIALLY OPAQUE OBJECTS

被引：7
|
作者：
WATT, DW
机构：
[1] Department of Mechanical Engineering, University of New Hampshire, Durham, NH
来源：
APPLIED OPTICS | 1995年 / 34卷 / 32期
关键词：
D O I：
10.1364/AO.34.007468
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Tomographic reconstruction from a limited amount of projection data of fields with embedded opaque objects can result in streaks and other artifacts in the reconstructed image. These artifacts result from the use of local-basis-function expansions to represent the image. I demonstrate that reconstructions by circular-harmonic expansions are largely free of these artifacts. A Fourier-Bessel expansion on a circular domain is used as the reconstruction basis; this expansion is used to compare circular-harmonic reconstructions with square-pixel reconstructions to determine qualitative differences between the local bases and the circular harmonics. Computational issues are also discussed. (C) 1995 Optical Society of America
引用
收藏
页码：7468 / 7473
页数：6
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