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J. Betancur, R. Trullo, G. Brusquet, E. Vazquez, S. Font et al., Frédéric Pascal, Vincent Lescarret and Pascal Bondon. I am also grateful to Frédéric Desprez, Céline Labrude and Thomas Cuidu for their help to use the GPUs of the laboratory. I would like to thank other L2S members

D. Duclos, S. Picard, O. Ghibaudo, S. Amiel, B. Gérardin et al., Mathilde Coutelier and Jeff Innocent. I also thank Stéphane Roux at LMT and Aymeric Reshef at GE Healthcare. I would like to thank all my friends and my family. In particular, I thank Rémi Bisognin with whom I closely worked on the development of a deconvolution algorithm for his PhD studies. I thank his supervisor, Gwendal Fève, and Ali for their enthusiasm during this unexpected and very pleasant collaboration. Last but not least, I would like to deeply thank my parents, Morgane Barbet-Massin

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