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Multiresolution reconstruction in fan-beam tomography

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4 Author(s)
Bonnet, S. ; CREATIS, CNRS, Villeurbanne, France ; Peyrin, F. ; Turjman, F. ; Prost, R.

In this paper, a new multiresolution reconstruction approach for fan-beam tomography is established. The theoretical development assumes radial wavelets. An approximate reconstruction formula based on a near-radial quincunx multiresolution scheme is proposed. This multiresolution algorithm allows to compute both the quincunx approximation and detail coefficients of an image from its fan-beam projections. Simulations on mathematical phantoms show that wavelet decomposition is acceptable for small beam angles but deteriorates at high angles. The main applications of the method are denoising and wavelet-based image analysis

Published in:

Image Processing, IEEE Transactions on  (Volume:11 ,  Issue: 3 )

Date of Publication:

Mar 2002

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