- Function File: tform = affine3d (T)
- Function File: tform = affine3d ()
tform is a representation of an affine 3D transform. Calling affine3D without parameters, (
affine3d ()) produces the identity transformation.affine3d takes a transpose of the affine matrix as described in standard literature it performs the transformation as follows: v = (u*T)(1:3) where u = [x y z 1] and T = [a b c 0; d e f 0; g h i 0; j k l 1] [a b c; d e f; g h i] is a transposed rotation\shear matrix, [j k l] is the translation vector, where j = dx, k = dy, l = dz.
affine3d methods:
"invert"invert (tform)- produces the inverse transform of affine3d 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, zlims)- given a bounding cube corner coordinates in xlims, ylims and zlims (top left front, right bottom back) - returns the new bounding cube after transformation."transformPointsForward"transformPointsForward(tform, u, v, w)- apply transformation tform on the set of u, v, w points (1xn vectors)transformPointsForward(tform, U)- apply transformation tform on U (3xn matrix)"transformPointsInverse"transformPointsInverse(tform, u, v, w)- apply the inverse transformation of tform on the set of u, v, w points (1xn vectors)transformPointsInverse(tform, U)- apply the inverse transformation of tform on U (3xn matrix)
See also: affine2d.
Package: image