Reconstructing non-ideal-bordered field by simple self-correlative algebraic reconstruction technique |
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Authors: | Yi-zhong Song Bin Zhang Lin Fu and An-zhi He |
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Affiliation: | (1) Department of Information Physics and Engineering, Science Institute, Nanjing University of Science and Technology, 210094 Nanjing, China;(2) Institute of Science and Technology for Opto-electronic Information, Yantai University, 26400 Yantai, China |
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Abstract: | A new algorithm for iterative reconstruction is suggested. It is named simple self-correlative algebraic reconstruction technique
(SSART). With numerical simulation experiments, SSART was applied in reconstructing a non-ideal-bordered field in order to
test its reconstructive effect. For contrast, three current representative algebraic reconstruction(ARTs) including basic
ART, simultaneous ART (SART) and modified SART (MSART) were simulated simultaneously. The calculated results and reconstructive
accuracy are discussed with three kinds of error indexes, namely mean-square error (MSE), absolute value error (AVE) and peak
error (PE). As the results, the indexes of reconstructive accuracy are much improved by the proposed SSART. The MSE and PE
have been decreased by 63.6% on the order of magnitude 10−4 and 88.9% on the order of magnitude 0–2, respectively, compared
to that of ART. It is concluded that SSART is one of the most super iterative reconstructing techniques.
This project was supported by China Postdoctoral Science Foundation (2004036121), the National Natural Science Foundation
of China (10404022), and Education Bureau of Shandong province (J04A63) |
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Keywords: | CLC number" target="_blank">CLC number TP391 |
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