Investigation on X-Ray Micro-Computed Tomography Suitable for Organic Compound Samples Based on Modifed Bronnikov Algorithm

Huiqiang, 刘慧强 Liu; Yudan, 王玉丹 Wang; Yuqi, 任玉琦 Ren; Yanling, 薛艳玲 Xue; You, 和友 He; Han, 郭瀚 Guo; Tiqiao, 肖体乔 Xiao

doi:10.3788/aos201232.0434001

光学学报

2012

DOI: 10.3788/aos201232.0434001

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Investigation on X-Ray Micro-Computed Tomography Suitable for Organic Compound Samples Based on Modifed Bronnikov Algorithm

刘慧强 Liu Huiqiang¹,

王玉丹 Wang Yudan²,

任玉琦 Ren Yuqi³

et al.

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Posterior regularization method for phase removal of shale nano-structure imaging in space domain

Fan

Tang²,

Wang³

et al. 2023

Front. Earth Sci.

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X-Ray computed tomography is a non-destructive method that is used, among many applications, to study the size, shape, 3D structures and interconnections of pores in shale. We use phase retrieval methods to deal with the “edge enhancement” effect caused by phase shift. The process of phase retrieval can be described by the transport-of-intensity equation (TIE). But this is an ill-posed problem. The existing methods focus on phase retrieval in the frequency domain. To tackle the ill-posedness, we propose a new method whose main idea is to solve this problem in space domain with a regularization technique. We study a synthetic shale model and simulate the projection data. Then we apply three methods to retrieve the phase: conventional method in frequency domain, direct solving method and iterative Tikhonov regularization method in space domain. Finally, we use the standard filtered back-projection (FBP) method to present the outcome. By analyzing the results, we find advantages of the new method: more stability and fewer artifacts under noise perturbations. The study shows that relative errors of the new method are nearly 1% of that of the traditional method based on frequency domain, and hence the new method is promising for the practical data processing.

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Posterior regularization method for phase removal of shale nano-structure imaging in space domain

Fan

Tang²,

Wang³

et al. 2023

Front. Earth Sci.

View full text Add to dashboard Cite

show abstract

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Investigation on X-Ray Micro-Computed Tomography Suitable for Organic Compound Samples Based on Modifed Bronnikov Algorithm

Cited by 1 publication

References 0 publications

Posterior regularization method for phase removal of shale nano-structure imaging in space domain

Posterior regularization method for phase removal of shale nano-structure imaging in space domain

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