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基于迭代反投影法的电阻抗断层成像分辨率增强

Resolution enhancement of electrical resistance tomography by iterative back projection method.

作者信息

Ichijo Noriaki, Matsuno Shinsuke, Sakai Taiji, Tochigi Yoshikatsu, Kaminoyama Meguru, Nishi Kazuhiko, Misumi Ryuta, Nishiyama So

机构信息

IHI Corporation, 1 Shin-nakahara-cho, Isogo-ku, Yokohama, 235-8501 Japan.

Division of Materials Science and Chemical Engineering, Faculty of Engineering, Yokohama National University, 79-5 Tokiwadai, Hodogaya-ku, Yokohama, 240-8501 Japan.

出版信息

J Vis (Tokyo). 2016;19:183-192. doi: 10.1007/s12650-015-0308-8. Epub 2015 Aug 12.

DOI:10.1007/s12650-015-0308-8
PMID:27110211
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC4830860/
Abstract

ABSTRACT

An iterative back projection method (i-BP) has been developed to improve the resolution of reconstructed images produced by electrical resistance tomography (ERT). This solution is based on an iterative calculation of the electrical fields and it is possible to reconstruct clearer images than those reconstructed by the conventional back projection method without divergence. However, it does take several minutes to finish the iteration process, and therefore this solution can be applied to flow fields that require high spatial resolution rather than short processing times, such as the accumulation of noble metals in glass melters. Numerical simulations and experiments using a simple model are performed in this study. The numerical simulations show that clear images are reconstructed both near the wall and at the center by i-BP. The conductivity correlation coefficient between the genuine distribution and the reconstructed image is improved from 0.4 to 0.9. The validity of the i-BP method is also confirmed by the experimental results. As a result, it is confirmed that ERT and i-BP are capable of reconstructing acceptable images and have potential for use in the visualization of the accumulation of noble metals in a glass melter.

摘要

摘要

已开发出一种迭代反投影方法（i-BP）来提高电阻层析成像（ERT）重建图像的分辨率。该解决方案基于电场的迭代计算，与传统的无发散反投影方法相比，能够重建出更清晰的图像。然而，完成迭代过程确实需要几分钟时间，因此该解决方案可应用于需要高空间分辨率而非短处理时间的流场，例如玻璃熔炉中贵金属的积聚情况。本研究进行了数值模拟并使用简单模型开展了实验。数值模拟表明，i-BP方法在壁面附近和中心位置均能重建出清晰的图像。真实分布与重建图像之间的电导率相关系数从0.4提高到了0.9。实验结果也证实了i-BP方法的有效性。结果表明，ERT和i-BP能够重建出可接受的图像，并具有用于可视化玻璃熔炉中贵金属积聚情况的潜力。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/94f23f1d501a/12650_2015_308_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/0630efa32f7b/12650_2015_308_Fig1_HTML.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/4ffc4b469c17/12650_2015_308_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/80a86e8e72eb/12650_2015_308_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/d0655d647b93/12650_2015_308_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/904481b5c8b8/12650_2015_308_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/a4ac3d0e6293/12650_2015_308_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/9eba07f4cdee/12650_2015_308_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/94f23f1d501a/12650_2015_308_Fig11_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/0630efa32f7b/12650_2015_308_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/bcf7c4240289/12650_2015_308_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/c356337d011a/12650_2015_308_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/accab87eddd3/12650_2015_308_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/4ffc4b469c17/12650_2015_308_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/80a86e8e72eb/12650_2015_308_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/d0655d647b93/12650_2015_308_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/904481b5c8b8/12650_2015_308_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/a4ac3d0e6293/12650_2015_308_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/9eba07f4cdee/12650_2015_308_Fig10_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/3af0/4830860/94f23f1d501a/12650_2015_308_Fig11_HTML.jpg

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