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Proceedings Paper

ECT image reconstruction based on the generalized vector sampled pattern matching method
Author(s): Yonghong Liu; Yuan Zhao; Yonghui Peng
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Paper Abstract

Electrical capacitance tomography (ECT) is a new technology for testing parameters of solid-air two-phase flow during the past decades. The key technique of ECT is the fast and accurate image reconstruction. In this paper, the principle and measuring process of ECT were elaborated, the reconstruction algorithm called generalized vector sampled pattern matching (GVSPM) method was used in two-phase flow particle concentration visualization. GVSPM method achieves accurate reconstruction by using an objective function that is calculated as the inner product calculation between the experimental capacitance and the reconstructed image capacitance. Mathematica simulation results showed that this method proved superior in the three parameters of capacitance residual, image error and image correlation, compared with the linear back projection (LBP) method. Using the GVSPM method, the "soft-field" effect and the ill-posed inverse problem in ECT technology can be effectively conquered, meanwhile, the reconstructed image has the advantages of high spatial resolution and low distortion.

Paper Details

Date Published: 28 December 2010
PDF: 8 pages
Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75441R (28 December 2010); doi: 10.1117/12.885275
Show Author Affiliations
Yonghong Liu, Yanshan Univ. (China)
Yuan Zhao, Yanshan Univ. (China)
Yonghui Peng, Yanshan Univ. (China)


Published in SPIE Proceedings Vol. 7544:
Sixth International Symposium on Precision Engineering Measurements and Instrumentation
Jiubin Tan; Xianfang Wen, Editor(s)

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