isTranslation
Determine if transformation is pure translation
Description
Examples
Check If 2-D Transformation Is a Pure Translation
Create an affine2d
object that defines a pure
translation.
A = [ 1 0 0 0 1 0 40 40 1 ]; tform = affine2d(A)
tform = affine2d with properties: T: [3x3 double] Dimensionality: 2
Check if the transformation is a pure translation.
tf = isTranslation(tform)
tf = 1
Check If 3-D Transformation Is a Pure Translation
Create an affine3d
object that defines a different
scale factor in each dimension.
Sx = 1.2; Sy = 1.6; Sz = 2.4; tform = affine3d([Sx 0 0 0; 0 Sy 0 0; 0 0 Sz 0; 0 0 0 1]);
tf = affine3d with properties: T: [4x4 double] Dimensionality: 3
Check if the transformation is a pure translation. Since
tform
scales the object,
tf = isTranslation(tform)
tf = 0
As expected, the transformation is not a pure translation since scaling changes the size and shape of an input volume.
Input Arguments
Output Arguments
TF
— Flag indicating pure translation transformation
scalar
Flag indicating pure translation transformation, returned as a logical
scalar. TF
is True
when
tform
represents a pure translation.
Data Types: logical
More About
Translation Transformation
A translation transformation shifts an image without modifying
the image size, shape, or orientation. A 2-D translation is represented by a matrix
T
of the form:
[1 0 0; 0 1 0; e f 1];
A 3-D translation is represented by a matrix of the form:
[1 0 0 0; 0 1 0 0; 0 0 1 0; j k l 1];
Version History
See Also
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