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Volume 24 Issue 2
Feb.  1998
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Journal of Beijing University of Aeronautics and Astronautics  > 1998  >  24(2): 161-164.
Fang Jiancheng, Ning Xiaolin. Autonomous celestial navigation for lunar explorer based on genetic algorithm particle filter[J]. Journal of Beijing University of Aeronautics and Astronautics, 2006, 32(11): 1273-1276. (in Chinese)
Citation: Du Yan, Liu Zhongkan, Cheng Jikuanet al. Weighted NewtonRaphson Algorithm for Electrical Impedance Tomography[J]. Journal of Beijing University of Aeronautics and Astronautics, 1998, 24(2): 161-164. (in Chinese)
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Weighted NewtonRaphson Algorithm for Electrical Impedance Tomography

  • Beijing University of Aeronautics and Astronautics,Dept. of Electronic Engineering

  • Received Date: 11 Nov 1996
  • Publish Date: 28 Feb 1998
    Abstract
  • A proper weight matrix is used to improve the NewtonRaphson algorithm for the electrical impedance tomography image reconstruction,and a weighted NewtonRaphson algorithm is proposed.The new weighted algorithm can overcome the defect of baddistributed resolution for reconstructed image by using original NewtonRaphson method.This kind of defect is from illcondition of inverse problem and some mathemetical and physical factors such as injecteds current,electrodes disposition,geometrical position of pixel etc.Compared with the simple NewtonRaphson algorithm,the image reconstructed by the weighted one is much better while the computation amount is almost not increased.The algorithm for computation of the weight matrix is also discussed in detail.

     

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    • References(1)
  • 1.Woo E J Hua P,Webster J G.A robust image reconstruction algorithm and its parallel implementation in electrical impedance tomography.IEEE Trans Med Imaging,1993,MI12(2):137~146 2. 杜 岩,柳重堪,程吉宽,吴少淳.基于连续插值逼近的电阻抗成像图像重建算法.电子科学学刊,1997,19(6):797~802 3. Webster J G.Electrical impedance tomograply.Bristol England:Adam Hilger,1990 4. Yorkey T J,Webster J G,Tompkins W J.Compairing reconstruction algorithms for electrical impedance tomography.IEEE Trans Biomed Eng,1987,BME34:843~852 5. Hua P,Tompkins W J.A regularised electrical impedance tomography reconstruction algorithm.Clin Phys Phsiol Meas,1988,9 Suppl(A):137~141 6. 柳重堪,杜 岩,李久平.实现电阻抗层析成像的交错算法.电子学报,1995,23(7):11~14
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