基于旋转电极图像重构的电容断层扫描无损检测方法

IF 0.9 4区 材料科学 Q4 MATERIALS SCIENCE, CHARACTERIZATION & TESTING Russian Journal of Nondestructive Testing Pub Date : 2024-09-23 DOI:10.1134/S1061830924601405
Qian Zhang, Hong Mo, Ruxue Li, Chenghua Liang, Junhua Luo
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引用次数: 0

摘要

电容断层扫描(ECT)是一种可视化无损检测技术。电极与假体之间的相对位置分布会影响重建图像的精度。为解决这一问题,本文提出了一种基于旋转电极的 ECT 系统图像重建方法和图像融合算法。首先,采用 4 种图像重建算法重建实验模型,其中基于 Tikhonov 正则化的 Landweber 迭代算法性能最佳。然后,通过将 12 个电极旋转 4 次,可以获得 5 组电容数据,从而得到 5 幅图像。最后,对这 5 幅图像进行自适应加权融合,即可得到融合结果。结果表明,基于旋转电极的自适应加权图像融合方法提高了重建图像的质量,并有效减少了伪影。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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Nondestructive Testing Method for Electrical Capacitance Tomography Based on Image Reconstruction of Rotating Electrodes

The electrical capacitance tomography (ECT) is a visual nondestructive testing technology. The relative positional distribution between the electrodes and the phantom object affects the accuracy of the reconstructed image. To solve this problem, an image reconstruction method and image fusion algorithm of ECT system based on rotating electrodes are proposed. First, 4 image reconstruction algorithms are employed to reconstruct the experimental model, the Landweber iterative algorithm based on Tikhonov regularization presents the best performance. Then, by rotation the 12 electrodes 4 times, we can obtain 5 sets of capacitance data, and obtain 5 images. Finally, the fusion results can be obtained by performing the adaptive weighted fusion on these 5 images. Results show that the adaptive weighted image fusion method based on rotation electrodes improves the quality of reconstructed images and effectively reduces the artefacts.

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来源期刊
Russian Journal of Nondestructive Testing
Russian Journal of Nondestructive Testing 工程技术-材料科学:表征与测试
CiteScore
1.60
自引率
44.40%
发文量
59
审稿时长
6-12 weeks
期刊介绍: Russian Journal of Nondestructive Testing, a translation of Defectoskopiya, is a publication of the Russian Academy of Sciences. This publication offers current Russian research on the theory and technology of nondestructive testing of materials and components. It describes laboratory and industrial investigations of devices and instrumentation and provides reviews of new equipment developed for series manufacture. Articles cover all physical methods of nondestructive testing, including magnetic and electrical; ultrasonic; X-ray and Y-ray; capillary; liquid (color luminescence), and radio (for materials of low conductivity).
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