There’s a contradiction built into the idea of an integrated
security system. The perfect security system would monitor every
square inch of a protected area, send an instant alarm, swing
surveillance cameras into place, deny access to intruders and
allow access to authorized personnel the instant an event
occurs. Although everything would be viewed, the system should
only respond to events that concern security. How, from a mass
of data, does one distill usable information? With more data, it
is harder to know what’s significant, but if there’s not enough
data, something important might get missed.  The main problem is
how to convert large amounts of data into usable information.
The solution is in the software.  The software Video analytics
(video content analysis) applications are designed to react
based on the video data seen by a digital camera. This is an
attempt to solve the basic problem of video surveillance: Many
cameras can be run all the time, but instead of people
monitoring the cameras, computer