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Type: Artigo
Title: Radiography Registration For Mosaic Tomography
Author: Vescovi
R. F. C.; Cardoso
M. B.; Miqueles
E. X.
Abstract: A hybrid method of stitching X-ray computed tomography (CT) datasets is proposed and the feasibility to apply the scheme in a synchrotron tomography beamline with micrometre resolution is shown. The proposed method enables the field of view of the system to be extended while spatial resolution and experimental setup remain unchanged. The approach relies on taking full tomographic datasets at different positions in a mosaic array and registering the frames using Fourier phase correlation and a residue-based correlation. To ensure correlation correctness, the limits for the shifts are determined from the experimental motor position readouts. The masked correlation image is then minimized to obtain the correct shift. The partial datasets are blended in the sinogram space to be compatible with common CT reconstructors. The feasibility to use the algorithm to blend the partial datasets in projection space is also shown, creating a new single dataset, and standard reconstruction algorithms are used to restore high-resolution slices even with a small number ofprojections.
Subject: Computed Tomography
Mosaic Tomography
Non-limited Field Of View
Editor: Int Union Crystallography
Citation: Journal Of Synchrotron Radiation. Int Union Crystallography, v. 24, p. 686 - 694, 2017.
Rights: aberto
Identifier DOI: 10.1107/S1600577517001953
Date Issue: 2017
Appears in Collections:Unicamp - Artigos e Outros Documentos

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