Hunyuan3D 2.1: From Images to High-Fidelity 3D Assets with Production-Ready PBR Material. - Team Hunyuan3D; Shuhui Yang; Mingxin Yang; Yifei Feng; Xin Huang; Sheng Zhang; Zebin He; Di Luo; Haolin Liu; Yunfei Zhao; Qingxiang Lin; Zeqiang Lai; et al. (CoRR, 2025)