I have some problem about bgs library of opencv. I am using absdiff functions for motion analysis. The motion is not clear enough. I used threshold and other functions to achieve smooth motion. So, what is the most useful background subtract library to find motion using blob detection method?
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"Useful" for what case? – karlphillip Oct 10 '14 at 16:20
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thnks for answer , actually , what is the most effective method to find motion analysis using background subtract ? – ozan çivlik Oct 10 '14 at 19:17
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Again, that depends on the case. To track 2 players moving around in a tennis court I would suggest one thing, to track cars moving around on a surveillence camera I would suggest something else. The point is: most effective.. For what scenario? – karlphillip Oct 10 '14 at 20:53
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It will be used for faces detection when there are motion faces. When I use the absdiff function to detect motion , detecting face is not smooth. Scenario will detect people on street and track them faces. So I want to use motion detection with blob detection. In addition ,I dont want to use color detection. Because it is not stable , it is changed by environment condition. Sorry for my explanation. I hope , explanation is clear this time. – ozan çivlik Oct 11 '14 at 12:54
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I would investigate Optical Flow (Lucas-Kanade) for that. – karlphillip Oct 11 '14 at 12:59
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I think you mentioned about this method. [link](https://www.youtube.com/watch?v=JO8XHzc6JPQ) . However , I didnt find any explanation about that. Besides , It seems for only one face tracking. Do you have any explanation or link etc about face tracking using optical flow ? – ozan çivlik Oct 11 '14 at 13:11
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[There is a something](http://opencv-python-tutroals.readthedocs.org/en/latest/py_tutorials/py_video/py_lucas_kanade/py_lucas_kanade.html) around the Internet. – karlphillip Oct 11 '14 at 13:34
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thnks to help but I need more deteails for Optical flow – ozan çivlik Oct 11 '14 at 17:27