"atomic bomb" commit. Reorganized OpenCV directory structure

samples/python/distrans.py

@@ -0,0 +1,71 @@
+#!/usr/bin/python
+import sys
+import cv
+import urllib2
+
+wndname = "Distance transform"
+tbarname = "Threshold"
+
+# The output images
+dist = 0
+dist8u1 = 0
+dist8u2 = 0
+dist8u = 0
+dist32s = 0
+
+gray = 0
+edge = 0
+
+# define a trackbar callback
+def on_trackbar(edge_thresh):
+
+    cv.Threshold(gray, edge, float(edge_thresh), float(edge_thresh), cv.CV_THRESH_BINARY)
+    #Distance transform                  
+    cv.DistTransform(edge, dist, cv.CV_DIST_L2, cv.CV_DIST_MASK_5)
+
+    cv.ConvertScale(dist, dist, 5000.0, 0)
+    cv.Pow(dist, dist, 0.5)
+    
+    cv.ConvertScale(dist, dist32s, 1.0, 0.5)
+    cv.AndS(dist32s, cv.ScalarAll(255), dist32s, None)
+    cv.ConvertScale(dist32s, dist8u1, 1, 0)
+    cv.ConvertScale(dist32s, dist32s, -1, 0)
+    cv.AddS(dist32s, cv.ScalarAll(255), dist32s, None)
+    cv.ConvertScale(dist32s, dist8u2, 1, 0)
+    cv.Merge(dist8u1, dist8u2, dist8u2, None, dist8u)
+    cv.ShowImage(wndname, dist8u)
+
+
+if __name__ == "__main__":
+    edge_thresh = 100
+
+    if len(sys.argv) > 1:
+        gray = cv.LoadImage(sys.argv[1], cv.CV_LOAD_IMAGE_GRAYSCALE)
+    else:
+        url = 'https://code.ros.org/svn/opencv/trunk/opencv/samples/c/stuff.jpg'
+        filedata = urllib2.urlopen(url).read()
+        imagefiledata = cv.CreateMatHeader(1, len(filedata), cv.CV_8UC1)
+        cv.SetData(imagefiledata, filedata, len(filedata))
+        gray = cv.DecodeImage(imagefiledata, cv.CV_LOAD_IMAGE_GRAYSCALE)
+
+    # Create the output image
+    dist = cv.CreateImage((gray.width, gray.height), cv.IPL_DEPTH_32F, 1)
+    dist8u1 = cv.CloneImage(gray)
+    dist8u2 = cv.CloneImage(gray)
+    dist8u = cv.CreateImage((gray.width, gray.height), cv.IPL_DEPTH_8U, 3)
+    dist32s = cv.CreateImage((gray.width, gray.height), cv.IPL_DEPTH_32S, 1)
+
+    # Convert to grayscale
+    edge = cv.CloneImage(gray)
+
+    # Create a window
+    cv.NamedWindow(wndname, 1)
+
+    # create a toolbar 
+    cv.CreateTrackbar(tbarname, wndname, edge_thresh, 255, on_trackbar)
+
+    # Show the image
+    on_trackbar(edge_thresh)
+
+    # Wait for a key stroke; the same function arranges events processing
+    cv.WaitKey(0)