A parallel and optimized volumetric visual hull reconstruction method
体素可视外壳并行优化建模方法

Volumetric visual hull reconstruction is easy to be implemented without complicated geometrical computation, but its accuracy and efficiency are still unsatisfactory. A parallel optimized visual hull modeling method is proposed based on CUDA and marching cubes. It parallelizes the voxel intersection judgment procedure and the isosurface extraction procedure, and implements both of them using multiple threads of CUDA to accelerate the reconstruction. During marching cubes process, exact intersection points are calculated and redundant computation of edges is eliminated. The pixel shader is used to carry out the hybrid weight texture mapping so as to enhance the quality of the reconstructed mesh model. Experimental results on the multi-camera platform DreamWorld have proved that this method can reconstruct multiple dynamic objects accurately in real time.