affinetransform

AffineTransform

class skimage.transform.AffineTransform(matrix=None, scale=None, rotation=None, shear=None, translation=None) [source]

Bases: skimage.transform._geometric.ProjectiveTransform

2D affine transformation of the form:

..:math:

X = a0*x + a1*y + a2 =

= sx*x*cos(rotation) - sy*y*sin(rotation + shear) + a2

Y = b0*x + b1*y + b2 =

= sx*x*sin(rotation) + sy*y*cos(rotation + shear) + b2

where sx and sy are zoom factors in the x and y directions, and the homogeneous transformation matrix is:

[[a0  a1  a2]
 [b0  b1  b2]
 [0   0    1]]

Parameters:	matrix : (3, 3) array, optional Homogeneous transformation matrix. scale : (sx, sy) as array, list or tuple, optional Scale factors. rotation : float, optional Rotation angle in counter-clockwise direction as radians. shear : float, optional Shear angle in counter-clockwise direction as radians. translation : (tx, ty) as array, list or tuple, optional Translation parameters.

Attributes

params

((3, 3) array) Homogeneous transformation matrix.

__init__(matrix=None, scale=None, rotation=None, shear=None, translation=None) [source]

rotation

scale

shear

translation