Motion - Feature Request 2005x 03x 31x 232126

Feature Request: Forward looking algorithm


Have you considered a forward looking algoritm ? Let me explain what I mean. The algoritm in your technology description currently measures the difference between a region of the current frame and the same region of the reference frame to detect motion. Now in most cases the moving object will leave the region within a small number of frames (say 20). So if you also compare that region in the current frame with the region in frame N+20, you should be able to distingush moving objects with more sensitivity from random noise. The disadvantage is ofcourse the delay before announcing that movement has been detected.

For a start, a forward looking algorithm will not detect the light being turned on as motion.

-- NicRoets - 17 Feb 2005

Transferred here

-- KennethLavrsen - 31 Mar 2005

Follow up

I have a lot of Motion detected in my garden which is just 2-3 frames. Maybe with a camera running 25 or 30 fps you could do something like this but for a typical surveillance application cameras run 2-5 fps. Mine run at 2. If you want a certain number of frames detected with a certain amount of changed pixels in a labelled area then you combine minimum_motion_frames with despeckle and you get something to work with. Combined also with lightswitch you have some good tools to work with.

-- KennethLavrsen - 17 Mar 2005


Topic revision: r1 - 31 Mar 2005, KennethLavrsen
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