Create smooth surface from volume mask or data — volume_to_surface • ieegio

Create smooth surface from volume mask or data

Usage

volume_to_surface(
  volume,
  lambda = 0.2,
  degree = 2,
  threshold_lb = 0.5,
  threshold_ub = NA,
  ...
)

Arguments

volume: volume object or path to the NIfTI volume files, see as_ieegio_volume for details
lambda, degree: smooth parameters; see vcg_smooth_implicit for details. To disable smoothing, set lambda to negative or NA
threshold_lb, threshold_ub: threshold of volume, see vcg_isosurface; default is any voxel value above 0.5
...: passed to as_ieegio_volume

Value

A as_ieegio_surface object; the surface is transformed into anatomical space defined by the volume.

Examples



# toy example; in practice, use tha path to the volume
volume <- array(0, dim = rep(30, 3))
volume[11:20, 11:20, 3:28] <- 1
volume[3:28, 11:20, 11:20] <- 1
volume[11:20, 3:28, 11:20] <- 1
vox2ras <- diag(1, 4)

surf <- volume_to_surface(volume, vox2ras = vox2ras)

if(interactive()) {
  plot(surf)
}