UltraPose: Synthesizing Dense Pose with 1 Billion Points by Human-body
                Decoupling 3D Model
              Haonan Yan1 , Jiaqi Chen2 *, Xujie Zhang2 , Shengkai Zhang1 ,
                Nianhong Jiao1 , Xiaodan Liang2 , Tianxiang Zheng1
              1
               Beijing Momo Technology Co., Ltd. 2 Sun Yat-sen University
       yan.haonan@immomo.com, {jadgechen,xdliang328,zhengtianxiang1128}@gmail.com,
         zhangxj59@mail2.sysu.edu.cn, songkey@pku.edu.cn, jnhrhythm@tju.ed ...