fslr (version 1.9.2.1)

zero_pad: Zero pads an image

Description

This function zero pads an image by a certain number of dimensions, usually for convolution

Usage

zero_pad(img, kdim, invert = FALSE, ...)

Arguments

img

Array or class nifti

kdim

Dimensions of kernel

invert

(logical) If FALSE, does zero padding. If TRUE, reverses the process.

...

Options to copyNIfTIHeader

Value

Object of class nifti

Examples

kdim = c(3,3,5)
img = array(rnorm(30*30*36), dim = c(30, 30, 36))
pad = zero_pad(img, kdim)
back = zero_pad(pad, kdim, invert=TRUE)
all.equal(back, img)