Compose arbitrary transform list into a deformation field.

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.

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

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)