grow_volume: Grow volume mask

In ravetools: Signal and Image Processing Toolbox for Analyzing Intracranial Electroencephalography Data

Grow volume mask

Description

Grow volume mask

Usage

grow_volume(volume, x, y = x, z = x, threshold = 0.5)

Arguments

volume	volume mask array, must be 3-dimensional array
x, y, z	size of grow along each direction
threshold	threshold after convolution

Value

A binary volume mask

Examples

oldpar <- par(mfrow = c(2,3), mar = c(0.1,0.1,3.1,0.1))

mask <- array(0, c(21,21,21))
mask[11,11,11] <- 1
image(mask[11,,], asp = 1,
      main = "Original mask", axes = FALSE)
image(grow_volume(mask, 2)[11,,], asp = 1,
      main = "Dilated (size=2) mask", axes = FALSE)
image(grow_volume(mask, 5)[11,,], asp = 1,
      main = "Dilated (size=5) mask", axes = FALSE)

mask[11, sample(11,2), sample(11,2)] <- 1
image(mask[11,,], asp = 1,
      main = "Original mask", axes = FALSE)
image(grow_volume(mask, 2)[11,,], asp = 1,
      main = "Dilated (size=2) mask", axes = FALSE)
image(grow_volume(mask, 5)[11,,], asp = 1,
      main = "Dilated (size=5) mask", axes = FALSE)

par(oldpar)

ravetools documentation built on Sept. 11, 2024, 9:06 p.m.