Approximate sulcal depth from white and inflated surfaces — surface_sulcal

Estimates a FreeSurfer-style sulcal depth map as the signed displacement between a white (or pial) surface and its inflated counterpart, measured along the inflated surface normals after matching the two meshes' centres and RMS radii. Positive values mark gyral crowns and negative values sulcal fundi. Both geometries must share topology.

Usage

surface_sulcal_proxy(white, inflated, iterations = 4L)

Arguments

white: Folded `SurfaceGeometry` (white or pial).
inflated: Inflated `SurfaceGeometry` with the same vertices and faces.
iterations: Laplacian smoothing iterations applied to the result.

Value

A numeric vector with one value per vertex.