structure_tensor_eigvals
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skimage.feature.structure_tensor_eigvals(Axx, Axy, Ayy)
[source] -
Compute Eigen values of structure tensor.
Parameters: Axx : ndarray
Element of the structure tensor for each pixel in the input image.
Axy : ndarray
Element of the structure tensor for each pixel in the input image.
Ayy : ndarray
Element of the structure tensor for each pixel in the input image.
Returns: l1 : ndarray
Larger eigen value for each input matrix.
l2 : ndarray
Smaller eigen value for each input matrix.
Examples
>>> from skimage.feature import structure_tensor, structure_tensor_eigvals >>> square = np.zeros((5, 5)) >>> square[2, 2] = 1 >>> Axx, Axy, Ayy = structure_tensor(square, sigma=0.1) >>> structure_tensor_eigvals(Axx, Axy, Ayy)[0] array([[ 0., 0., 0., 0., 0.], [ 0., 2., 4., 2., 0.], [ 0., 4., 0., 4., 0.], [ 0., 2., 4., 2., 0.], [ 0., 0., 0., 0., 0.]])
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