Combining Geometric and Photometric 3D Reconstruction Techniques for Cultural Heritage
Résumé
There are mainly two families of photographic 3D reconstruction techniques.
Photogrammetry techniques work according to the principle of triangulation, from the matching of dierent views, while photometric techniques link the appearance of a 3D point to the orientation of its normal, relative to that of the incident light. While photogrammetry allows to nd the global shape of a 3D scene, if it is suciently textured, photometric techniques highlight the details of the relief, as long as the model linking the lighting to the shape and reectance of the scene is suciently realistic. In this work, we compare these dierent approaches with some others in the context of reconstructing archaeological features. After discussing their advantages and disadvantages, we describe a promising new method combining both families in a multi-view, multi-lighting context.
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