This paper presents a framework for robustly and accurately computing the visual hull of a real object from images
sequences. Unlike most existing volumetric based approaches, level set deformable model is utilized in our system to
drive the surface from a sphere smoothly recovery the shape of the real object. The algorithm represents the object's
surface implicitly as the zero level set in uniform grid and the visual hull computation problem is translated into a forces
computation problem. The deforming surface evolves under the internal and external forces according to the silhouettes
and smoothness constrains. Snake deformable model is applied as a refinement step to improve the quality of mesh and
reduce the total computing time. This classical and geometric mixed deformation model can easily and naturally changes
the topology of the surface and need not add any extra measurement to avoid mesh confusion. The experiment results
turns out that the final mesh have higher precise and smoothness than the traditional volumetric based approaches.
- Visual hull computation based on level set method
- Jian Xu - Harbin Institute of TechnologyXiaojun Wu - Harbin Institute of TechnologyPeizhi Wen - Guilin University of Electronic TechnologyPeng Song - Harbin Institute of Technology
- Proceedings of SPIE, Vol.7546(1), pp.75460D-75460D-7
- Second International Conference on Digital Image Processing
- 9912330409846
- ISTD Pillar
- English
- Conference proceeding