Improvement of the OPED algorithm by means of introducing an integration into the evaluation process

Oleg Tischenko; Yuan Xu; Christoph Hoeschen

doi:10.1117/12.711421

16 March 2007 Improvement of the OPED algorithm by means of introducing an integration into the evaluation process

Oleg Tischenko, Yuan Xu, Christoph Hoeschen

Proceedings Volume 6510, Medical Imaging 2007: Physics of Medical Imaging; 65105I (2007) https://doi.org/10.1117/12.711421
Event: Medical Imaging, 2007, San Diego, CA, United States

Abstract

The tomographic method based on the orthogonal polynomial expansion on disc (OPED) was presented at SPIE conference of Medical Imaging 2006. We could show already some advantages compared to FBP as it is commonly used in today's CT systems. However, OPED did show for some specific cases some noise in the reconstructed images and even artefacts, mainly an aliasing. We have found that the OPED algorithm can be essentially improved by integrating the polynomial over the whole area belonging to the pixel instead of assigning to the whole pixel the polynomial value calculated just for one point of this pixel (typically bottom left). This advantageous implementation is effective in view of reduction of the aliasing artefacts and noise without affecting the resolution. This can be fulfilled effectively for OPED due to its simple structure.

Citation Download Citation

Oleg Tischenko, Yuan Xu, and Christoph Hoeschen "Improvement of the OPED algorithm by means of introducing an integration into the evaluation process", Proc. SPIE 6510, Medical Imaging 2007: Physics of Medical Imaging, 65105I (16 March 2007); https://doi.org/10.1117/12.711421

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