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transform.radon: Remove unneccesary matrix inverse.

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Jostein Bø Fløystad
2013-06-23 12:48:13 +02:00
parent 1d64eb59eb
commit 28de2f978a
1 changed files with 4 additions and 5 deletions
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skimage/transform/radon_transform.py
+4 -5
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@@ -98,17 +98,16 @@ def radon(image, theta=None, circle=False):
[0, 0, 1]])
def build_rotation(theta):
T = -np.deg2rad(theta)
T = np.deg2rad(theta)
R = np.array([[np.cos(T), -np.sin(T), 0],
[np.sin(T), np.cos(T), 0],
R = np.array([[np.cos(T), np.sin(T), 0],
[-np.sin(T), np.cos(T), 0],
[0, 0, 1]])
return shift1.dot(R).dot(shift0)
for i in range(len(theta)):
rotated = _warp_fast(padded_image,
np.linalg.inv(build_rotation(-theta[i])))
rotated = _warp_fast(padded_image, build_rotation(theta[i]))
out[:, i] = rotated.sum(0)[::-1]