Abstract: We address the automatic pixelwise labeling of satellite images with convolutional neural networks. These networks tend to lose spatial precision in the process, outputting coarse classification maps that do not accurately outline the objects. While specific enhancement algorithms have been designed in the literature to improve such coarse neural…
October 5th 2015, 10:30am in room Byron blanc Abstract: Over the last decades, the evolution of acquisition techniques yields the generalization of detailed 3D objects, represented as large point clouds composed of millions of vertices. The complexity of the involved data often requires to analyze them for the extraction and…
Abstract: High quality isotropic meshing has been thoroughly studied in the past. Resulting techniques such as Optimal Delaunay Triangulation (ODT) and Centroidal Voronoi Tessellation (CVT) are well understood and widely used in a variety of applications. However, anisotropic meshing presents a considerably more difficult challenge. In this talk, we present…
Résumé: La modélisation géométrique et la sémantisation de scènes intérieures à partir d’échantillon de points et un sujet de recherche qui prend de plus en plus d’importance. Le traitement d’un ensemble volumineux de données est rendu difficile d’une part par le nombre élevé d’objets parasitant la scène et d’autre part…
June 23, 2pm in room Byron beige The emergence of 3D printing technology steers the investigation of new geometric problems. In this talk I will introduce three novel results in the realm of 3D printing and design of geometric models. The production cost of 3D printing is directly related to…
June 22, room Byron beige at 10:30 am Converting an unstructured mesh into a more structured model is a fundamental building block in many applications, such as reverse engineering and animation. In spite of many attempts to automate this task there still exists no satisfactory method for practical applications: some…
(Friday June 12th, 10:30am in room Byron beige) Abstract: Implicit functions are among the most convenient tools for surface description as they do not require any parameterization on the given point cloud. In this talk, I will present a fast and flexible reconstruction technique based on implicit b-splines. As the…
May 21, 3pm in room Byron blanc (downstairs) ABSTRACT: Today fabricating an appropriate 3D model using a low-cost 3D printer is as easy as printing a textual document, but creating a 3D model which is actually “appropriate” for printing is definitely complicated. A 3D model can be produced either from…
Les sujets sont à faire seul ou en binôme. Chaque sujet sélectionné est barré de la liste une fois qu’il a été sélectionné deux fois (sur le mode premier demandé, premier servi). Le travail à produire est le suivant: – lire les articles en référence, lorsque listés. – mettre en…
10 mars (Florent Lafarge) Reconstruction de surface: Introduction Reconstruction de surface: méthodes lisses Reconstruction de surface: méthodes par primitives géométriques 17 mars (Pierre Alliez) Optimisation de maillages CGAL: triangulations 2D CGAL: maillages 24 mars (Florent Lafarge) Approximation de surface Segmentation de maillages 31 mars (Pierre Alliez) 7 avril (Florent Lafarge)…
