Fast Generation of Spatiotemporal-Consistent Dynamic Atlas

In order to transmit dynamic 3D reconstruction results,it is demanded to efficiently encode 3D models with realistic and compact texture information.In this paper,a method is proposed to fast generate spatiotemporal-consistent texture atlas for dynamic 3D reconstruction.First,the triangle-wise correspondence of adjacent meshes is quickly calculated as adjacent canonical meshes from dynamic reconstruction have similar geometric shape.Second,a consistent segmentation of sequence of meshes is obtained by solving a mesh-patch-based optimization.Third,the correspondence and segmentation of sequence of meshes are used for fast generating spatiotemporal-consistent atlas of meshes.Experimental results have shown that our method enables efficient dynamic 3D reconstruction with compact texture atlas video.The bitrate of atlas video lossless encoded by H.264 is reduced by about 50%and the bitrate of atlas video lossy encoded by H.264 is reduced by 70%~80%.