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Hough Transofrm for Lines

 

Hi ,

   When I use the function VLIB_houghLineFromList() in vlib for Hough Transform, I have a question: 

   I do not konwn what are  the parameters "ping pong pang peng" mean?

  Is there any  application note?

  Is  there any simple project using VLIB Hough transform for line detection in an image?

  My email is xavier.rovira@lanaccess.es

Thanks a lot.