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iradon_sart: Test clip functionality and add a test for it.

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Jostein Bø Fløystad
2013-06-24 10:18:54 +02:00
parent a5df8d4630
commit a4870242b6
2 changed files with 4 additions and 1 deletions
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skimage/transform/radon_transform.py
+1 -1
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@@ -413,5 +413,5 @@ def iradon_sart(radon_image, theta=None, image=None, projection_shifts=None,
projection_shifts[angle_index])
image += relaxation * image_update
if not clip is None:
image = clip(image, clip[0], clip[1])
image = np.clip(image, clip[0], clip[1])
return image
skimage/transform/tests/test_radon_transform.py
+3
View File
@@ -347,6 +347,9 @@ def test_iradon_sart():
delta = np.mean(np.abs(reconstructed - image))
print('delta (2 iterations) =', delta)
assert delta < 0.013 * error_factor
reconstructed = iradon_sart(sinogram, theta, clip=(0, 1))
print('delta (1 iteration, clip) =', delta)
assert delta < 0.013 * error_factor
np.random.seed(1239867)
shifts = np.random.uniform(-3, 3, sinogram.shape[1])