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VCA can also be used for forensics after the film has been made. It is then manageable to search for particular actions within the recorded video. For example if you know a criminal is driving a yellow automobile, you can set the system to search for yellow cars and the system will provide you with a list of all the times where there is a yellow car visible in the image. These considerations can be made more precise by looking for "a person moving around in a certain area for a suspicious amount of time", for example if someone is standing around an ATM machine without using it.

In crowds the system is limited to finding unusual people, for instance a person moving in the different way to the crowd, which might be a case in aerodromes where riders are only thought to walk in one direction out of a plane, or in a subway where masses are not thought to exit through the entrances.

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Pan Tilt

Pan Tilt CCTV

Forleden gik jeg en tur ned ei dalen under de store skibakker, og hvad kom der så drønende? En svensker med ski på, og dte var ikke den slags ski, de har på i Helsingør ;-)

Næ nej - ham her havde skam rigtige langrend ski på, og det var egentlig sært, for de fleste af dem bruger jo slalomski om vinteren.

Nå - men han var altså på den her skiferie, og han følte sig lidt snydt, for der var ikke sne nogen steder. 

Faktisk havde han kun et underlag af sort skifer at køre på, og det var altså ikke helt lykken ;-)