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High resolution three- dimensional visualization using neutron computerized tomography images
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DOI：10.1016/j.ndteint.2021.102515.png)
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Abstract
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This paper presents a modified Neutron Computerized Tomography (NCT) reconstruction method to obtain an effective and accurate 3D volume rendering with more cleared details that achieve the optimization for contrast, raise the resolution, real view and reduce noise. This proposed method depends on dealing with the slice duplication in case of full scan by dividing the sinogram into two halves by considering the rotation angle from 0 degrees to 180 degrees and from 180 degrees to 360 degrees. In this case, and after solving the center of rotation problem, three reconstructed slices will be obtained, the first one for the full scan from 0 degrees to 360 degrees that has two congruent slices, the second one for the first half of sinogram that represents the first half cycle of the full scan from 0 degrees to 180 degrees, the third one for the second half of sinogram that represents the second half cycle of the full scan from 180 degrees to 360 degrees. By building the 3D volume rendering to each of these three reconstructed slices, the 3D volume rendering of the first slice that resulted from the first half of sinogram proved a high-quality volume visualization compared to the 3D volume rendering resulted from half rotation scan (180 degrees scan) and the 3D volume resulted from the current existing working software in the neutron computerized tomography facility in Egypt Second Research Reactor (ETRR-2).
Keywords:
3D volume rendering
Neutron Ct
High resolution
Sinogram
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