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Résumé La paléoneurologie est un champ de recherche important dans le cadre des études sur l’évolution humaine. Les variations de taille et de forme de l’endocrâne sont en effet utiles pour différencier les différentes espèces d’homininés, alors que les asymétries cérébrales sont reliées au comportement et aux capacités cognitives. Pourtant, notre connaissance de l’évolution et de la variation du...
We present a method to automatically quantify the local asymmetries of bilateral structures in point clouds. The method relies on the robust computation of the approximate symmetry plane of the object under study. This plane is defined as the minimiser of a criterion, based on a M-estimator and devised to reduce the influence of asymmetrical features of the object. An algorithm is then proposed to...
We present a general method to study the dissymmetry of anatomical structures such as those found in the human brain. Our method relies on the estimate of 3D dissymmetry fields, the use of 3D vector field operators, and T 2 statistics to compute significance maps. We also present a fully automated implementation of this method which relies mainly on the intensive use of a 3D non-rigid inter-patient...
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