Imaging range-ability of particular ERT reconstruction algorithms

IMECH-IR > 流固耦合系统力学重点实验室

	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
会议录名称	2nd World Congress on Industrial Process Tomography
	2014
会议名称	2nd World Congress on Industrial Process Tomography
会议日期	August 29, 2001 - August 31, 2001
会议地点	Hannover, Germany
摘要	The 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.
关键词	Backprojection Algorithms Conductivity Distributions Electric Field Problems Electrical Resistance Tomography Generalized Inverse Matrix Reconstructed Image Reconstruction Algorithms Sensitivity Coefficient
课题组名称	LMFS多相流及流固耦合(LHO)
ISBN号	9780853163183
收录类别	EI
语种	英语
文献类型	会议论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/60232
专题	流固耦合系统力学重点实验室
通讯作者	Ma, Yixin
推荐引用方式 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.