Ring artifact removal for micro-tomography in synchrotron radiation

Yongsheng Pan; Francesco De Carlo; Xianghui Xiao

doi:10.1117/12.911578

3 March 2012 Ring artifact removal for micro-tomography in synchrotron radiation

Yongsheng Pan, Francesco De Carlo, Xianghui Xiao

Proceedings Volume 8313, Medical Imaging 2012: Physics of Medical Imaging; 831329 (2012) https://doi.org/10.1117/12.911578
Event: SPIE Medical Imaging, 2012, San Diego, California, United States

Abstract

Ring artifacts are common in tomography reconstructions. These artifacts may arise, in microtomography using synchrotron radiation, from dead pixels in CCD detectors, damaged scintillator screens and instabilities of the synchrotron beam. Ring artifact removal is therefore an important task. We apply an image inpainting algorithm on the sinogram data to reduce ring artifacts in reconstructions. The applied image inpainting algorithm is advantageous in two aspects. First, the proposed method is local, and it affects only the user-specified corrupted region. Second, it utilizes the directional information of level lines, as well as the intensity information, in the sinogram data. Experimental results show that the proposed method is able to compensate both the missing directional information and the distorted intensity information, which reduces ring artifacts in reconstructions. An improvement in reconstruction image qualities is achieved for micro-tomography using the proposed method. A comparison shows that the proposed method may outperform existing methods in terms of reconstruction accuracy.

Citation Download Citation

Yongsheng Pan, Francesco De Carlo, and Xianghui Xiao "Ring artifact removal for micro-tomography in synchrotron radiation", Proc. SPIE 8313, Medical Imaging 2012: Physics of Medical Imaging, 831329 (3 March 2012); https://doi.org/10.1117/12.911578

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available