D$^2$GS: Depth-and-Density Guided Gaussian Splatting for Stable and Accurate Sparse-View Reconstruction
机构 * Insta360 Research(Insta360研究机构) ; Tsinghua University(清华大学) ; University of California, San Diego(加州大学圣地亚哥分校) ; Nanyang Technological University(南洋理工大学) ; Wuhan University(武汉大学)