Implementation of Modified Conjugate Gradient Algorithm in Electromagnetic Tomography Lab System

Abstract:

The advantage of the electromagnetic tomography is introduced briefly. Based on conjugate gradient algorithm, modified conjugate gradient algorithm for electromagnetic tomography (EMT) is proposed, which improves quality of reconstructed image and convergence speed efficiently. In the light of the lab electromagnetic tomography system, modified conjugate gradient for reconstructing images is verified. By evaluation of image error and the relevance, regularization, Landweber, conjugate gradient and modified conjugate gradient algorithms are compared. It can draw the conclusion that for different flow models, image error and the correlation using modified conjugate gradient algorithm is superior to the others in lab EMT system.

• Periodical: Advanced Materials Research (Volumes 655-657)
• Pages: 693-696
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.655-657.693
• Online since: January 2013
• Authors: Zhan Jun Wang*, Liu Li
• Keywords: Electromagnetic Tomography, EMT System, Modified Conjugate Gradient Algorithm

References

[1] Peyton A J: Meas. Sci. Technol Vol. 7 (1996), p.261–71.

[2] A.V. Korzhenevskii and V.A. Cherepenin: Journal of Communications Technology and Electronics Vol 42(4) (1997), pp.469-474.

[3] Korjenevsky A, CherepeninV and Sapetsky S: Physiol. Meas Vol. 21 (2000), p.89–94.

[4] LI Shi jun, QIN Ming xin, DONG Xiu zhen: Foreign Medical Science Biomedical Engineering Vol. 4 (2002), pp.12-16.

[5] ZOUTENDIJK G: Integer and Nonlinear Programming, 1970, pp.37-86.

[6] Liu Li and Zhanjun Wang. Research Journal of Applied Sciences, Engineering and Technology, Vol. 4 (2012), pp.2205-2212.

[7] Peng Lihui, Lu Gen: J Tsinghua Univ (Sci & Tech), Vol. 44(2004), pp.478-484.