Here is my basic, entry-level patch for "zone detection" in video. You can simple add more zones and features, because the routine is really simple.
Moreover I made some more complex tools for motion tracking (eg. like https://vimeo.com/30480928 or https://vimeo.com/17401153) for my various projects, and some of them are available online, for free (the problem is: no english guide), I think my "ActiveZones2OSC" tool (link: http://www.wrocenter.pl/lab/activezones2osc/) is something, you need. I’m working on new versions with full english guide, I need time… more time.
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