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A multi-scale image reconstruction algorithm for electrical capacitance tomography

文献类型：期刊论文

作者Lei, Jing1; Liu, Shi1; Li, Zhihong1; Sun, Meng2; Wang, Xueyao2
刊名APPLIED MATHEMATICAL MODELLING
出版日期2011-06-01
卷号35期号:6页码:2585-2606
关键词Electrical capacitance tomography Multi-scale image reconstruction Tikhonov regularization method Wavelet analysis Total least squares estimation Homotopy method
英文摘要Electrical capacitance tomography (ECT) is considered as a promising process tomography (PT) technology, and its successful applications depend mainly on the precision and speed of the image reconstruction algorithms. In this paper, based on the wavelet multi-scale analysis method, an efficient image reconstruction algorithm is presented. The original inverse problem is decomposed into a sequence of inverse problems, which are solved successively from the largest scale to the smallest scale. At different scales, the inverse problem is solved by a generalized regularized total least squares (TLS) method, which is developed using a combinational minimax estimation method and an extended stabilizing functional, until the solution of the original inverse problem is found. The homotopy algorithm is employed to solve the objective functional. The proposed algorithm is tested by the noise-free capacitance data and the noise-contaminated capacitance data, and excellent numerical performances and satisfactory results are observed. In the cases considered in this paper, the reconstruction results show remarkable improvement in the accuracy. The spatial resolution of the reconstructed images by the proposed algorithm is enhanced and the artifacts in the reconstructed images can be eliminated effectively. As a result, a promising algorithm is introduced for ECT image reconstruction. (C) 2010 Elsevier Inc. All rights reserved.
WOS标题词Science & Technology ; Technology ; Physical Sciences
类目[WOS]Engineering, Multidisciplinary ; Mathematics, Interdisciplinary Applications ; Mechanics
研究领域[WOS]Engineering ; Mathematics ; Mechanics
关键词[WOS]NEURAL-NETWORK ; FLOW MEASUREMENT ; FLUIDIZED-BEDS ; 2-PHASE ; SOLIDS ; REGULARIZATION ; ITERATION ; SYSTEM ; ECT
收录类别SCI
语种英语
WOS记录号WOS:000288829200001
公开日期2015-12-22
源URL[http://ir.etp.ac.cn/handle/311046/106554]  
专题工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位1.N China Elect Power Univ, Minist Educ, Key Lab Condit Monitoring & Control Power Plant E, Beijing 102206, Peoples R China
2.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Lei, Jing,Liu, Shi,Li, Zhihong,et al. A multi-scale image reconstruction algorithm for electrical capacitance tomography[J]. APPLIED MATHEMATICAL MODELLING,2011,35(6):2585-2606.
APA Lei, Jing,Liu, Shi,Li, Zhihong,Sun, Meng,&Wang, Xueyao.(2011).A multi-scale image reconstruction algorithm for electrical capacitance tomography.APPLIED MATHEMATICAL MODELLING,35(6),2585-2606.
MLA Lei, Jing,et al."A multi-scale image reconstruction algorithm for electrical capacitance tomography".APPLIED MATHEMATICAL MODELLING 35.6(2011):2585-2606.

入库方式： OAI收割

来源：工程热物理研究所

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