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Title: Registration of the rotation axis in X-ray tomography

There is high demand for efficient, robust and automated routines for tomographic data reduction, particularly for synchrotron data. Registration of the rotation axis in data processing is a critical step affecting the quality of the reconstruction and is not easily implemented with automation. Existing methods for calculating the center of rotation have been reviewed and an improved algorithm to register the rotation axis in tomographic data is presented. The performance of the proposed method is evaluated using synchrotron-based microtomography data on geological samples with and without artificial reduction of the signal-to-noise ratio. The proposed method improves the reconstruction quality by correcting both the tilting error and the translational offset of the rotation axis. The limitation of this promising method is also discussed.
Authors:
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Publication Date:
OSTI Identifier:
1239588
DOE Contract Number:
AC02-06CH11357
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Synchrotron Radiation; Journal Volume: 22
Publisher:
International Union of Crystallography
Research Org:
Argonne National Laboratory (ANL)
Sponsoring Org:
Argonne National Laboratory - Advanced Photon Source; USDOE Office of Science; Stanford Synchrotron Radiation Lightsource (SSRL); Stanford University; National Natural Science Foundation of China (NSFC); Chinese Academy of Sciences (CAS)
Country of Publication:
United States
Language:
English
Subject:
rotation axis; x-ray tomography