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In the past few years several systems for object reconstruction based on the analysis of 2D images have been proposed. In order for such systems to be of practical use, the 3D data extraction process is expected to be fast and reliable. In this paper we propose a general approach for the reconstruction of complete 3D objects based on a mesh fusion algorithm. Every surface patch is obtained as a depth map using an algorithm based on graph cuts theory. Each depth map is then triangulated before using it in a fusion algorithm based on a voxel-set carving approach. The result of the process is a closed mesh representing the object surface with sub-voxel resolution.