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Images & Vectors

I sincerely believe they use a filter that can extract blobs over time. If you factor out the expected image, and increase the contrast you can then end up with just a point in projected 2D space. You could theoretically then project that point back into 3D, but I don't believe that's necessary.

Using that 2D point, things are very simple. I think your average case would involve walking straight through the area at a constant pace. If the pedestrian slows down and starts to loiter with a purpose, or if a group of blobs forms around the main entrance, then something fishy is going on -- so you signal the security guard. You could learn this online, as you're just gathering trends.

This is probably all done with rules, as I can't see a way of getting markov models to do all of this (especially the social gathering bit).

Interesting discussion though ;)

935 posts.
Thursday 25 April, 04:07
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