affine.im: Apply Affine Transformation To Pixel Image
Description
Applies any affine transformation of the plane (linear transformation
plus vector shift) to a pixel image.
Usage
# S3 method for im
affine(X, mat=diag(c(1,1)), vec=c(0,0), ...)
Arguments
Value
Another pixel image (of class "im") representing the
result of applying the affine transformation.
Details
The image is subjected first to the linear transformation represented by
mat (multiplying on the left by mat),
and then the result is translated by the vector vec.
The argument mat must be a nonsingular \(2 \times 2\)
matrix.