I'm currently making a traffic count system using opencv and python and what I exactly intend to do is that,to increment the counter as soon as the centroid of the blob passes or crosses a line or a small rectangle. My question is how to do this as I don't know how to implement cv2.lines or cv2.rectangle in this. Please see this video and if anybody could tell how exactly the intersection or counting is working in this video: https://www.youtube.com/watch?v=z1Cvn3_4yGo
Thanks in advance.
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