python: 'cv2.' -> 'cv.' via 'import cv2 as cv'

samples/python/turing.py

@@ -16,7 +16,7 @@ if PY3:
     xrange = range
 
 import numpy as np
-import cv2
+import cv2 as cv
 from common import draw_str
 import getopt, sys
 from itertools import count
@@ -37,24 +37,24 @@ if __name__ == '__main__':
     out = None
     if '-o' in args:
         fn = args['-o']
-        out = cv2.VideoWriter(args['-o'], cv2.VideoWriter_fourcc(*'DIB '), 30.0, (w, h), False)
+        out = cv.VideoWriter(args['-o'], cv.VideoWriter_fourcc(*'DIB '), 30.0, (w, h), False)
         print('writing %s ...' % fn)
 
     a = np.zeros((h, w), np.float32)
-    cv2.randu(a, np.array([0]), np.array([1]))
+    cv.randu(a, np.array([0]), np.array([1]))
 
     def process_scale(a_lods, lod):
-        d = a_lods[lod] - cv2.pyrUp(a_lods[lod+1])
+        d = a_lods[lod] - cv.pyrUp(a_lods[lod+1])
         for _i in xrange(lod):
-            d = cv2.pyrUp(d)
-        v = cv2.GaussianBlur(d*d, (3, 3), 0)
+            d = cv.pyrUp(d)
+        v = cv.GaussianBlur(d*d, (3, 3), 0)
         return np.sign(d), v
 
     scale_num = 6
     for frame_i in count():
         a_lods = [a]
         for i in xrange(scale_num):
-            a_lods.append(cv2.pyrDown(a_lods[-1]))
+            a_lods.append(cv.pyrDown(a_lods[-1]))
         ms, vs = [], []
         for i in xrange(1, scale_num):
             m, v = process_scale(a_lods, i)
@@ -68,7 +68,7 @@ if __name__ == '__main__':
             out.write(a)
         vis = a.copy()
         draw_str(vis, (20, 20), 'frame %d' % frame_i)
-        cv2.imshow('a', vis)
-        if cv2.waitKey(5) == 27:
+        cv.imshow('a', vis)
+        if cv.waitKey(5) == 27:
             break
-    cv2.destroyAllWindows()
+    cv.destroyAllWindows()