Correction of center of rotation and projection angle in synchrotron X-ray computed tomography

Chang-Chieh Cheng*, Yu-Tai Ching, Pai Hung Ko, Yeukuang Hwu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

An error in tomographic reconstruction parameters can result considerable artifacts in the reconstructed image, particularly in micro-computed tomography and nano-computed tomography. This study involved designing an automatic method for efficiently correcting errors resulting from incorrectly determined rotational axes and projection angles. In this method, errors are corrected by minimizing the "total variation" of a reconstructed image, and minimization is accomplished by using the gradient descent method. Compared with two previous methods, the proposed method achieved the best reconstruction results.

Original languageEnglish
Article number9884
JournalScientific reports
Volume8
Issue number1
DOIs
StatePublished - 1 Dec 2018

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