November21, 2006:
While computerized facial recognition got shot down in the media
recently, for not being ready for prime time, the technology has proved useful
in other ways. While faces are pretty difficult for current pattern recognition
software to handle, other images are not. For a decade now, pattern recognition
software has been used successfully for industrial robots and robotic vehicles.
This technology is now being applied to security video (a big market, that is
growing rapidly.) Software can detect when something bad is going on, like a
crime, and alert human operators. This solves a major problem with surveillance
video; having someone who can watch the video feeds. This is not always
necessary, because the videos have proved most useful as a record of a past
crime, and thus a deterrent to criminals. But in some security situations, and
most military ones, you want to alert someone right away if something unwanted
is happening.
Security
video is a big deal in Iraq, where is has been a major factor in keeping
casualties, from roadside bombs, down. The many video cameras in UAVs, or just
mounted around bases, have caught terrorists planning bombs, or undertaking
preparations for other types of attacks (mortars, rockets or guns). But these
video feeds tie up a lot of troops, who must spend mind-numbing hours
monitoring the pictures. The new pattern recognition software takes on some of
this duty. That means more vidcams can be employed, with software doing most of
the analysis. A human operator is only alerted when the software detects what
appears to be a suspicious activity.
Higher
resolution vidcams, cheaper hard drives to store the images on, and faster CPUs
to do the analysis, are what make a lot of this pattern recognition software
work. The concept has been around for decades, but only recently have the
resources become available. The technology was originally developed for police
and security, not military, applications. The software can monitor vidcams in
high-crime areas, and alert police as crimes are committed, often quickly
enough to halt some (such as rape or assault). In the security area, burglary
and vandalism can be detected and interrupted. Moving these capabilities to
military applications is pretty easy.