The Principle of Local Tomography with a New Filter

CHINESE JOURNAL OF COMPUTATIONAL PHYSICS ›› 2004, Vol. 21 ›› Issue (3): 362-368.

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The Principle of Local Tomography with a New Filter

XU Mao-lin^1,2, QIU Jun¹, FAN Hui-rong^1,3, ZHANG Zhao-tian⁴, LI Xing-dong⁵

1. Beijing Information Technology Institute, Beijing 100101, China;
2. Department of Life Science and Biometical Engineering, Zhejiang University, Hangzhou 310027, China;
3. Department of Mathematics, Inner Mongolia University, Huhehot 010010, China;
4. Department of Information Science, NSFC, Beijing 100085, China;
5. National Institute of Metrology, Beijing 100013, China

Received:2003-03-31 Revised:2003-12-04 Online:2004-05-25 Published:2004-05-25

Abstract

Abstract: It introduces the principle of local tomography algorithm with a new filter.The second order error estimation is obtained.The local reconstruction of simulation and experimental projection data show that the local tomography algorithm is simple and fast,by which the resolution and Gibbs effect of the reconstructed images can be improved.

Key words: local tomography, new filter, time-frequency character, error estimation, fast decay of side-peak

CLC Number:

TP391.41

XU Mao-lin, QIU Jun, FAN Hui-rong, ZHANG Zhao-tian, LI Xing-dong. The Principle of Local Tomography with a New Filter[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2004, 21(3): 362-368.

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The Principle of Local Tomography with a New Filter

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