- Function File: tform = affine2d (T)
- Function File: tform = affine2d ()
tform is a representation of an affine 2D transform. Calling affine2D without parameters, (
affine2d ()) produces the identity transformation.affine2d takes a transpose of the affine matrix as described in standard literature it performs the transformation as follows: v = (u*T)(1:2) where u = [x y 1] and T = [a b 0; c d 0; e f 1] [a b; c d] is a transposed rotation\shear matrix, [e f] is the translation vector, where e = dx, f = dy.
affine2d methods:
"invert"invert (tform)- produces the inverse transform of affine2d transform"isRigid"isRigid (tform)- checks if transform tform is only rotation or translation."isSimilarity"isSimilarity (tform)- checks if transform tform is only homogeneous scaling, rotation, reflection or translation."isTranslation"isTranslation (tform)- checks if transform tform is is a pure translation"outputLimits"outputLimits (tform, xlims, ylims)- given a bounding box corner coordinates in xlims and ylims (top left, right bottom) - returns the new bounding box after transformation."transformPointsForward"transformPointsForward(tform, u, v)- apply transformation tform on the set of u, v points (1xn vectors)transformPointsForward(tform, U)- apply transformation tform on U (2xn matrix)"transformPointsInverse"transformPointsInverse(tform, u, v)- apply the inverse transformation of tform on the set of u, v points (1xn vectors)transformPointsInverse(tform, U)- apply the inverse transformation of tform on U (2xn matrix)
See also: affine3d.
Package: image