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Electrical tomography hybrid method

An electrical tomography and voltage technology, which is used in image data processing, 2D image generation, instruments, etc., can solve problems such as large amount of calculation, and achieve the effect of reducing dimensions, improving the quality of reconstructed images, and improving the accurate solution process.

Active Publication Date: 2018-03-27
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

The existing regularization parameter selection scheme is mainly to exhaustively exhaust the regularization parameters within a certain range, and use the characteristics of the objective function curve (such as the inflection point) to determine the regularization parameters, which has the disadvantage of excessive calculation

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Embodiment Construction

[0027] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. Hereinafter, embodiments of the present invention will be described in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention. Those skilled in the art will understand that unless otherwise stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the word "comprising" used in the description of the present invention refer...

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Abstract

The embodiment of the invention discloses an electrical tomography hybrid method and relates to the field of electrical tomography technology. Through the method, the calculation amount in the processof determining regularization parameters can be lowered. The method comprises the steps that before and after changing of internal conductivity of a target object, voltage data of a boundary of the target object is measured; according to the collected voltage data, a Krylov subspace projection method is adopted to perform dimension reduction analysis, and an analysis result is obtained; and a Bayesian regularization method is adopted to acquire a change value of the internal conductivity of the target object. The method is applicable to electrical tomography.

Description

technical field [0001] The invention belongs to the technical field of electrical tomography, in particular to a hybrid method of electrical tomography based on Krylov subspace projection and Bayesian regularization. Background technique [0002] Electrical tomography technology is a new type of tomography technology developed in the medical field and applied in non-destructive testing, multiphase flow monitoring and other industrial fields. It has the advantages of fewer electrodes and high imaging quality, so it has been widely concerned in many fields in recent years. [0003] However, electrical tomography technology still faces some basic theoretical and technical problems to be solved urgently, and further in-depth research is needed. For example: From a mathematical point of view, electrical tomography is a typical ill-posed inverse problem, and there are problems satisfying the existence, uniqueness and stability of the solution. Among them, for the solution of the...

Claims

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Application Information

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IPC IPC(8): G06T11/00G06K9/62G01N27/04
CPCG06T11/003G06T11/006G01N27/04G06F18/21322G06F18/21328G06F18/29
Inventor 严刚
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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