title: Hough transform detect shorter lines
body: <p>Im using opencv hough transform to attempt to detect shapes. The longer lines are all very nicely detected using the HoughLines method.but the shorter lines are completely ignored. 
  Is there any way to also detect the shorter lines?</p>
  
  <p>the code I'm using is described on this page 
  <a href="http://opencv-python-tutroals.readthedocs.org/en/latest/py_tutorials/py_imgproc/py_houghlines/py_houghlines.html" rel="nofollow noreferrer">http://opencv-python-tutroals.readthedocs.org/en/latest/py_tutorials/py_imgproc/py_houghlines/py_houghlines.html</a></p>
  
  <p>I'm more interested in lines such as the corner of the house etc. 
  which parameter should I modify to do this with Hough transform? or is there a different algorithm I should be looking at</p>
  
  <p><img src="https://i.stack.imgur.com/BJsfL.jpg" alt="Hough transform with OpenCV python tutorial"></p>