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Imaging range-ability of particular ERT reconstruction algorithms
Ma YX; Wang M; Zheng ZC(郑之初); Wu YX(吴应湘); Holliday N; Ma, Yixin
Source Publication2nd World Congress on Industrial Process Tomography
Conference Name2nd World Congress on Industrial Process Tomography
Conference DateAugust 29, 2001 - August 31, 2001
Conference PlaceHannover, Germany
AbstractThe Electrical Resistance Tomography technique can produce color-labeled or gray images to show the conductivity distribution across a sensing domain. However, it has limited accuracy because of the difficulty in solving this type of non-linear electric field problem. This paper presents the results of several simulation studies to determine the spatial resolution and distinguish-ability, collectively terms as range-ability, of four ERT reconstruction algorithms. The algorithms are: the equi-potential line based back-projection (EBP) method, the sensitivity coefficient based back-projection (SBP) method, the generalized inverse matrix based iterative algorithm (GIMA) and the sensitivity theorem based iterative method (STM). By comparing the results, it was found that, the GIMA using prior-knowledge gives good range-ability for reconstructing distinct objects when the conductivity contrast between the objects and the background is small; the STM has the strongest ability of the four algorithms to recognize a continuous conductivity distribution and deliver the ‘true value’, the range-ability of the two back-projection algorithms are less affected by the conductivity contrast, however the object edges in the reconstructed image are far more blurred than that in STM and GIMA images. It was also noticed that the EBP method has better distinguish-ability than the SBP method for imaging distinct objects. © 2014 International Society for Industrial Process Tomography.
KeywordBackprojection Algorithms Conductivity Distributions Electric Field Problems Electrical Resistance Tomography Generalized Inverse Matrix Reconstructed Image Reconstruction Algorithms Sensitivity Coefficient
Indexed ByEI
Document Type会议论文
Corresponding AuthorMa, Yixin
Recommended Citation
GB/T 7714
Ma YX,Wang M,Zheng ZC,et al. Imaging range-ability of particular ERT reconstruction algorithms[C]2nd World Congress on Industrial Process Tomography,2014.
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