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| Titre: | Tomographic velocity images by artificial neural networks |
| Auteur(s): | Djarfour, Noureddine
Ferahtia, J.
Baddari, K. |
| Mots-clés: | Elman neuron networks training
Back-propagation
Traveltime
Velocity
Tomography
Backprojection
ART |
| Date de publication: | 2007 |
| Collection/Numéro: | Journal of Engineering and Applied Sciences/ Vol.2, N°4 (2007);pp. 775-782 |
| Résumé: | The present study deals with the use of Elman artificial neural network (feedback connexion) to reconstruct the velocity image from a traveltime in the seismic tomography experiment. This recurrent connection provides the advantage to store values from the previous time step, which can be used in the actual time step. The backpropagation algorithm has been used to learn the suggested neural network. Efficiency of these networks has been tested in training and generalization phases. A comparative reconstruction with two classical methods was performed using backprojection and Algebraic Reconstruction Techniques (ART). The obtained results clearly show improvements of the quality of the reconstruction obtained by artificial neural networks |
| URI/URL: | http://dlibrary.univ-boumerdes.dz:8080/handle/123456789/2728 |
| ISSN: | 1819-6608 |
| Collection(s) : | Publications Internationales
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