composeTransformsToField: Compose arbitrary transform list into a deformation field.

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

Compose arbitrary transform list into a deformation field.

Description

A deformation field can capture any domain to domain correspondence that we can represent in ANTsR. This function will map a list of transforms into a single deformation field object.

Usage

composeTransformsToField(image, transforms)

Arguments

image	input image defines the transformation domain
transforms	list of transform filenames or antrTransforms

Value

field deformation object is output

Author(s)

Avants BB, Duda JT

Examples

fi <- antsImageRead(getANTsRData("r16"))
mi <- antsImageRead(getANTsRData("r64"))
fi <- resampleImage(fi, c(60, 60), 1, 0)
mi <- resampleImage(mi, c(60, 60), 1, 0) # speed up
mytx <- antsRegistration(fixed = fi, moving = mi, typeofTransform = c("SyN"))
compfield <- composeTransformsToField(fi, mytx$fwd)
atx <- antsrTransformFromDisplacementField(compfield)
wrped <- applyAntsrTransformToImage(atx, mi, fi)

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