SimpleITK  1.3.0.dev466
Python/CannyEdge.py
1 #!/usr/bin/env python
2 #=========================================================================
3 #
4 # Copyright Insight Software Consortium
5 #
6 # Licensed under the Apache License, Version 2.0 (the "License");
7 # you may not use this file except in compliance with the License.
8 # You may obtain a copy of the License at
9 #
10 # http://www.apache.org/licenses/LICENSE-2.0.txt
11 #
12 # Unless required by applicable law or agreed to in writing, software
13 # distributed under the License is distributed on an "AS IS" BASIS,
14 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15 # See the License for the specific language governing permissions and
16 # limitations under the License.
17 #
18 #=========================================================================
19 
20 from __future__ import print_function
21 
22 import SimpleITK as sitk
23 import sys
24 import os
25 
26 if len ( sys.argv ) < 2:
27  print( "Usage: %s <input>" % ( sys.argv[0] ) )
28  sys.exit ( 1 )
29 
30 
31 image = sitk.Cast( sitk.ReadImage( sys.argv[1] ), sitk.sitkFloat32 )
32 
33 edges = sitk.CannyEdgeDetection( image, lowerThreshold=200, upperThreshold=400, variance=[4]*3 )
34 
36 stats.Execute( image )
37 
38 if ( not "SITK_NOSHOW" in os.environ ):
39  sitk.Show( sitk.Maximum( image*0.5, edges*stats.GetMaximum()*.5) )