Title :
Analysis of the spectral properties of the Radon transform for the design of optimal sampling grids
Author :
Boschen, F. ; Kummert, A.
Author_Institution :
Dept. of Electr. Eng., Wuppertal Univ., Germany
Abstract :
The sampling theorem also known as Shannon theorem is the basis for digital signal processing and computer based algorithms. A great number of publications is devoted to sampling and reconstruction of signals. Spectral properties of the underlying continuous signals and different kinds of applications require a specific approach in designing an optimal sampling grid. For doing this, in the domain of multidimensional signal processing a greater degree of freedom can be utilized. In this paper the spectral properties of the projection signal of a tomograph with respect to the bandwidth is analysed and an optimal sampling grid for projection data is presented
Keywords :
Radon transforms; computerised tomography; image reconstruction; image sampling; medical image processing; multidimensional signal processing; optimisation; spectral analysis; Radon transform; Shannon theorem; computer based algorithms; continuous signals; digital signal processing; multidimensional signal processing; optimal sampling grids; sampling theorem; signal reconstruction; signal sampling; spectral analysis; tomograph projection signal; Character generation; Sampling methods; Spectral analysis; Variable speed drives;
Conference_Titel :
Image Analysis and Interpretation, 2000. Proceedings. 4th IEEE Southwest Symposium
Conference_Location :
Austin, TX
Print_ISBN :
0-7695-0595-3
DOI :
10.1109/IAI.2000.839585
