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Real-Time Voxel Reconstruction using GPU Technology

This project presents advanced real-time voxel reconstruction techniques that leverage GPU capabilities to maximize efficiency. Highlighting the principles and practices of voxel carving, the initiative supports up to four cameras to generate detailed visual hulls from actor movement. Two primary approaches—volume-based and surface-based—are explored. This innovative method enables fast processing and superior texture rendering through background subtraction and learning methods, ultimately overcoming previous limitations related to resolution and memory usage.

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Real-Time Voxel Reconstruction using GPU Technology

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  1. Reconstruction voxeliquetemps réel Jean-Marc HasenfratzE107

  2. CYBER-II Reconstruction voxellique temps réel

  3. Description générale Reconstruction voxellique temps réel

  4. 2m 2m Platforme Not limited to 4 cameras! Reconstruction voxellique temps réel

  5. Textures Background Subtraction Background learning (5 sec.) Actor moving… Silhouettes Reconstruction voxellique temps réel

  6. Compute the Visual Hull • Definition • Two approaches: • Volume based • Surface based Volume based Surface based Silhouettes Reconstruction voxellique temps réel

  7. Voxel Carving Principle in 2D Camera 1 Camera 2 Voxel grid 8x8 Camera 3 Reconstruction voxellique temps réel

  8. 2m 643 Voxels 2m 2m Fast Voxel Carving using GPU 64 pixels 64 pixels 3cm3 Reconstruction voxellique temps réel

  9. Fast Voxel Carving using GPU 64 pixels 64 pixels Reconstruction voxellique temps réel

  10. 64*8*2=1024 pixels 64*8=512 pixels Fast Voxel Carving using GPU Reconstruction voxellique temps réel

  11. Fast Voxel Carving using GPU “AND” (64*8)2=512 2 (64*8*2)2=1024 2 Reconstruction voxellique temps réel

  12. Vidéos Reconstruction voxellique temps réel

  13. Objectifs • Version précédente sur SGI Onyx • Limitation nombreuses (prix, GPU, CPU…) • Faire exploser le système ! • Résolution / temps / mémoire • Utilisation de carte graphique • bus PCI • Mémoire de texture importante Reconstruction voxellique temps réel

  14. Question ? ARTIS Jean-Marc HASENFRATZ E107 http://artis.inrialpes.fr/~Jean-Marc.Hasenfratz/ Reconstruction voxellique temps réel

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