Insertion of 3D-Primitives in Mesh-Based Representations: Towards Compact Models Preserving the Details

Florent Lafarge 1 Renaud Keriven 2, 3 Mathieu Brédif 4, 5
1 ARIANA - Inverse problems in earth monitoring
CRISAM - Inria Sophia Antipolis - Méditerranée , Laboratoire I3S - SIS - Signal, Images et Systèmes
3 IMAGINE [Marne-la-Vallée]
LIGM - Laboratoire d'Informatique Gaspard-Monge, CSTB - Centre Scientifique et Technique du Bâtiment, ENPC - École des Ponts ParisTech
Abstract : We propose an original hybrid modeling process of urban scenes that represents 3-D models as a combination of mesh-based surfaces and geometric 3-D-primitives. Meshes describe details such as ornaments and statues, whereas 3-D-primitives code for regular shapes such as walls and columns. Starting from an 3-D-surface obtained by multiview stereo techniques, these primitives are inserted into the surface after being detected. This strategy allows the introduction of semantic knowledge, the simplification of the modeling, and even correction of errors generated by the acquisition process. We design a hierarchical approach exploring different scales of an observed scene. Each level consists first in segmenting the surface using a multilabel energy model optimized by -expansion and then in fitting 3-D-primitives such as planes, cylinders or tori on the obtained partition where relevant. Experiments on real meshes, depth maps and synthetic surfaces show good potential for the proposed approach.
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Florent Lafarge, Renaud Keriven, Mathieu Brédif. Insertion of 3D-Primitives in Mesh-Based Representations: Towards Compact Models Preserving the Details. IEEE Transactions on Image Processing, Institute of Electrical and Electronics Engineers, 2010, 19 (7), pp.1683-1694. ⟨10.1109/TIP.2010.2045695⟩. ⟨inria-00503145⟩

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