R: Calculate the deformation field for a transformation

deformationField {RNiftyReg} | R Documentation

## Calculate the deformation field for a transformation

### Description

This function is used to calculate the deformation field corresponding to a specified linear or nonlinear transformation. The deformation field gives the location in source image space corresponding to the centre of each voxel in target space. It is used as a common form for linear and nonlinear transformations, and allows them to be visualised.

### Usage

    deformationField(transform, jacobian = TRUE)

### Arguments

`transform` | A transform, possibly obtained from `forward` or `reverse`.
`jacobian` | A logical value: if `TRUE`, a Jacobian determinant map is also calculated and returned in an attribute.

### Value

An `"internalImage"` representing the deformation field. If requested, the Jacobian map is stored in an attribute, which can be extracted using the `jacobian` accessor function.

### Author(s)

Jon Clayden <code@clayden.org>

### See Also

`niftyreg.linear`, `niftyreg.nonlinear`

[Package RNiftyReg version 2.6.0 Index]