affine transformation
Noun
Meaning
(mathematics) a transformation that is a combination of single transformations such as translation or rotation or reflection on an axis
Source: WordNetSynonyms
Hypernyms
Examples
Affine transformation in plane geometry A simple affine transformation on the real plane Effect of applying various 2D affine transformation matrices on a unit square.
An affine transformation is invertible if and only if is invertible.
If there is a fixed point, we can take that as the origin, and the affine transformation reduces to a linear transformation.
Drawing with Bézier paths Composite Bézier curves may also be used to draw an ellipse to sufficient accuracy, since any ellipse may be construed as an affine transformation of a circle.
If is a matrix, : is equivalent to the following : The above-mentioned augmented matrix is called affine transformation matrix, or projective transformation matrix (as it can also be used to perform projective transformations ).
If these conditions do not hold, the formula describes a more general affine transformation of the plane provided that the determinant of A is not zero.