[Bug 629244] [opencv] Add motion detection element

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=629244
  GStreamer | gst-plugins-bad | git

--- Comment #28 from Nicola <lists at svrinformatica.it> 2011-04-30 19:36:30 UTC ---
It seems good and the cpu usage is very low, great work Robert!

some questions/impressions:

1) is the gap property the time of no motion, in seconds, after that a "motion
finished" message is posted?
2) if there are massive light intensity changes the element report them as
motion, some projects (for example
http://www.lavrsen.dk/foswiki/bin/view/Motion/MotionGuideBasicFeatures#Motion_Detection_Settings)
have a property to control this situation
3) is the motion detected comparing the last two frames? If yes maybe could be
useful,to reduce false detections, to define the number of frames with motion
that make a motion event begin

thanks again for your great work,

Nicola

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