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Correcting import for a private function

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This commit is contained in:
Ankit Agrawal
2013-08-15 14:59:51 +05:30
parent c40ab969af
commit c599b34236
1 changed files with 12 additions and 10 deletions
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skimage/feature/censure.py
+12 -10
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@@ -1,9 +1,10 @@
import numpy as np
from scipy.ndimage.filters import maximum_filter, minimum_filter
from skimage.transform import integral_image
from skimage.feature import _compute_auto_correlation
from skimage.feature.corner import _compute_auto_correlation
import time
def _get_filtered_image(image, n, mode='DoB'):
if mode == 'DoB':
inner_wt = (1.0 / (2*n + 1)**2)
@@ -21,14 +22,15 @@ def _get_filtered_image(image, n, mode='DoB'):
return filtered_image
def _suppress_line(response, sigma):
def _suppress_line(response, sigma, rpc_threshold):
Axx, Axy, Ayy = _compute_auto_correlation(response, sigma)
detA = Axx * Ayy - Axy**2
traceA = Axx + Ayy
# ratio of principal curvatures
rpc = traceA / detA
rpc[rpc > 10] = 0
return rpc
rpc = traceA / (detA + 0.001)
response[rpc > rpc_threshold] = 0
return response
def censure_keypoints(image, mode='DoB', threshold=0.03):
# TODO : Decide number of scales. Image-size dependent?
@@ -53,9 +55,9 @@ def censure_keypoints(image, mode='DoB', threshold=0.03):
minimas[np.abs(minimas) < threshold] = 0
maximas[np.abs(maximas) < threshold] = 0
response = maximas + np.abs(minimas)
response[:, :, 1] = _suppress_line(response[:, :, 1], 1.33)
response[:, :, 2] = _suppress_line(response[:, :, 2], 1.33)
response[:, :, 3] = _suppress_line(response[:, :, 3], 1.33)
response[:, :, 4] = _suppress_line(response[:, :, 4], 1.33)
response[:, :, 5] = _suppress_line(response[:, :, 5], 1.33)
response[:, :, 1] = _suppress_line(response[:, :, 1], 1.33, 10)
response[:, :, 2] = _suppress_line(response[:, :, 2], 1.33, 10)
response[:, :, 3] = _suppress_line(response[:, :, 3], 1.33, 10)
response[:, :, 4] = _suppress_line(response[:, :, 4], 1.33, 10)
response[:, :, 5] = _suppress_line(response[:, :, 5], 1.33, 10)
return response