createWarpedGrid: Create a warped grid for visualization.

In stnava/ANTsR: ANTs in R: Quantification Tools for Biomedical Images

Create a warped grid for visualization.

Description

Deforming a grid is a helpful way to visualize a deformation field. This function enables a user to define the grid parameters and apply a deformable map to that grid.

Usage

createWarpedGrid(
  img,
  gridStep = 10,
  gridWidth = 2,
  gridDirections = c(TRUE, TRUE),
  fixedReferenceImage = NULL,
  transform = NA,
  foreground = 1,
  background = 0
)

Arguments

img	input image
gridStep	width of grid blocks
gridWidth	width of grid lines
gridDirections	directions in which to draw grid lines, boolean vector
fixedReferenceImage	reference image space
transform	vector of transforms
foreground	intensity value for grid blocks
background	intensity value for grid lines

Value

image is output

Author(s)

Avants BB

Examples

fi <- antsImageRead(getANTsRData("r16"))
mi <- antsImageRead(getANTsRData("r64"))
mygr <- createWarpedGrid(mi)
## Not run: 
mytx <- antsRegistration(fixed = fi, moving = mi, typeofTransform = c("SyN"))
mywarpedgrid <- createWarpedGrid(mi,
  gridDirections = c(F, T),
  transform = mytx$fwdtransforms, fixedReferenceImage = fi
)
plot(fi, mywarpedgrid, alpha = 0.75, color.overlay = "blue")

## End(Not run)

stnava/ANTsR documentation built on April 16, 2024, 12:17 a.m.