三维场景重建 ,表面重建 通过几何单元拼接拟合物体表面来描述物体的三 维结构 >基于深度图的表面重建 >基于三维密度图的表面重建 ,体重建 直接将体像素以一定的颜色和透明度投影到显示 平面 CV:Reconstruction 2023/2/2 6
表面重建 通过几何单元拼接拟合物体表面来描述物体的三 维结构 ➢基于深度图的表面重建 ➢基于三维密度图的表面重建 体重建 直接将体像素以一定的颜色和透明度投影到显示 平面 CV:Reconstruction 2023/2/2 6
一.表面片重建 Connected Set of Polygons(Usually Triangles) 。May not be closed 7
Connected Set of Polygons (Usually Triangles) ◦ May not be closed 7
Subdivision Surfaces Coarse Mesh Subdivision Rule Define smooth surface as limit of sequence of refinements 8
Coarse Mesh & Subdivision Rule ◦ Define smooth surface as limit of sequence of refinements 8
Parametric Surfaces Tensor Product Spline Patches Careful constraints to maintain continuity 立n Q Q Q 13 Q Q 14 Q AA 9
Tensor Product Spline Patches ◦ Careful constraints to maintain continuity 9
Implicit Surface Points satisfying:F(x,y,z)=0 Polygonal Model Implicit Model 10
Points satisfying: F(x,y,z) = 0 10 Polygonal Model Implicit Model