Fix 404 url in canny edge detection tutorial

ed397cfb · Bisaloo · GitHub · 2a253772 · ed397cfb
Commit ed397cfb authored Oct 04, 2017 by Bisaloo Committed by GitHub Oct 04, 2017
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py_canny.markdown doc/py_tutorials/py_imgproc/py_canny/py_canny.markdown +1 -1

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--- a/doc/py_tutorials/py_imgproc/py_canny/py_canny.markdown
+++ b/doc/py_tutorials/py_imgproc/py_canny/py_canny.markdown
@@ -101,7 +101,7 @@ Additional Resources
 --------------------

 -#  Canny edge detector at [Wikipedia](http://en.wikipedia.org/wiki/Canny_edge_detector)
-#  [Canny Edge Detection Tutorial](http://dasl.mem.drexel.edu/alumni/bGreen/www.pages.drexel.edu/_weg22/can_tut.html) by
+-#  [Canny Edge Detection Tutorial](http://dasl.unlv.edu/daslDrexel/alumni/bGreen/www.pages.drexel.edu/_weg22/can_tut.html) by
    Bill Green, 2002.

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