Fig. 10.
Spherical deformable U-Net architecture. The number of features Ci after each operation is denoted above the box. The number of vertices Ni is denoted below the box. Ni+1 = 4Ni − 6, Ci+1 = Ci × 2. The k in the input number of vertices Nk indicates that the input surface is on the k-th icosahedron subdivision. Typically, we use the 7-th subdivision of icosahedron with 40,962 vertices and set C1=64.