Reliable estimation of membrane curvature for cryo-electron tomography
Fig 8
Accuracy of curvature estimation on a spherical surface with quantization noise.
Panels (A-D) show visualizations of κ2 (voxel-1) estimated by (A) VTK, (B) FreeSurfer (FS), (C) AVV using the optimal rh = 10 voxels or (D) SSVV using the optimal rh = 8 voxels on a sphere with quantization noise and radius = 10 voxels. Panels (E-G) show cumulative relative frequency histograms of the principal curvature (κ1 and κ2) errors on a spherical surface with quantization noise and (E) radius = 10 or (F-G) 30 voxels using RVV, AVV, SSVV, VTK, Mindboggle (MB) and FS; latter three algorithms only in (E-F). The values of rh or n (in voxels) used for each algorithm are indicated in the legends.