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Actively filtering border keypoints on all scales

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Ankit Agrawal
2013-08-07 14:55:32 +05:30
parent c3e18b0aee
commit 4b0b342ead
1 changed files with 16 additions and 0 deletions
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skimage/feature/censure.py
+16
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@@ -204,6 +204,22 @@ def censure_keypoints(image, n_scales=7, mode='DoB', non_max_threshold=0.15,
feature_mask[:, :, i] = _suppress_lines(feature_mask[:, :, i], image,
(1 + i / 3.0), line_threshold)
if mode == 'Octagon':
for i in range(1, n_scales - 1):
c = (OCTAGON_OUTER_SHAPE[i][0] - 1) / 2 + OCTAGON_OUTER_SHAPE[i][1]
feature_mask[:c, :, i] = False
feature_mask[:, :c, i] = False
feature_mask[-c:, :, i] = False
feature_mask[:, -c:, i] = False
elif mode == 'STAR':
for i in range(1, n_scales - 1):
c = STAR_SHAPE[STAR_FILTER_SHAPE[i][0]] + STAR_SHAPE[STAR_FILTER_SHAPE[i][0]] / 2
feature_mask[:c, :, i] = False
feature_mask[:, :c, i] = False
feature_mask[-c:, :, i] = False
feature_mask[:, -c:, i] = False
rows, cols, scales = np.nonzero(feature_mask[..., 1:n_scales - 1])
keypoints = np.column_stack([rows, cols])
scales = scales + 2