22
Affine Transform
If
x is represented in affine coordinates (x,h).
x = x(e10 – e00) + h(e01-
e00) + e00
and we apply affine transform T to point x,
we get
Tx = x(Te10
–
Te00) + h(Te01-Te00) + Te00
In both cases, x has the same coordinates (x,h).