Title :
Tomographic reconstruction of axisymmetrical objects from one view by model approximation
Author :
Lagrange, J.M. ; Dauty, I. ; Azencott, R.
Author_Institution :
Centre d´´etudes de Vaujours, Courtry, France
Abstract :
Classical techniques for the reconstruction of axisymmetrical objects are all creating artefacts (smooth or unstable solutions). Moreover, the extraction of very precise features related to large densities´ transitions remains quite delicate. We develop a new approach-in one dimension for the moment-that allows us both to reconstruct and to extract characteristics: an a priori is provided thanks to a density model. We show the interest of this method with regards to noise effects quantification; we also explain how to take into account some physical perturbations arising from real data acquisition
Keywords :
Gaussian noise; acoustic signal processing; acoustic wave propagation; computerised tomography; data acquisition; deconvolution; detonation waves; explosions; feature extraction; image reconstruction; X-ray photographs; artefacts; axisymmetrical objects; deconvolution; density model; density transitions; explosives; feature extraction; model approximation; noise effects; perturbations; real data acquisition; shock waves; shock waves propagation; tomographic reconstruction; Constraint theory; Data acquisition; Data mining; Explosives; Lagrangian functions; Position measurement; Shape; Shock waves; Subspace constraints; Tomography;
Conference_Titel :
Image Processing, 1997. Proceedings., International Conference on
Conference_Location :
Santa Barbara, CA
Print_ISBN :
0-8186-8183-7
DOI :
10.1109/ICIP.1997.647896