Octree Voxel Modeling with Multi-view Texturing in Cultural Heri- Tage Scenarios

Reconstruction of 3D models of real world scenes and objects and photo realistic rendering in interactive free viewpoint applications is a challenging task combining image processing, computer vision and computer graphics. In this paper, we present a reconstruction pipeline for cultural heritage applications. Starting with a number of photographs of a scene, calibration information is obtained and a 3D model is reconstructed using a hierarchical voxel approach. This octree reconstruction generates a 3D geometry that is further transformed into a wire frame model for smoothing and surface primitive reduction. Finally, texture mapping in the form of view-dependent multi-texture rendering is applied. This approach guarantees original views at original camera positions and automatic texture interpolation at intermediate positions during scene navigation. Furthermore, the algorithm was adapted to exploit automatic graphics card processing and interpolation.