Every year more
than 1000 people around the world die inside of Metro railway stations. The use of Video Analytics can help to
identify and prevent suicide attempts. You might wonder how? The answer is very
simple: falling detectors.
Falling detectors are used in public and
private places for automatic detection of abnormal situations related to
falling objects. It is important for high-quality security and reduces the
numbers of severe accidents.
Tasks solved by falling detectors may be
divided into two categories:
The detection of everything that falls from the platform and the detection
of unintentional falls whilst on the platform (serious injuries and citizens
living alone). In both cases immediate treatment is very critical, thus falls
need to be detected as soon as possible.
In these two cases detectors work in
different ways.
In the first case the detection logic is
based on signal line intersection. This line is the boundary of the platform
and the rails whereby the intersection of it is secured by an alarm signal.
Hence the fall detector can automatically track all abnormal situations
associated with falling of objects. It increases the speed of response and
helps to decrease the number of death.
In the second case
the evaluation of falls is more difficult as there is no dangerous boundaries
and body movements and the fall is unpredictable. The principle of the fall
detection in this case is based on a combination of motion gradients and human shaped features variation. Large
movements always accompany falls, but large motion can also be a characteristic
of walking person. That is why we need further analysis. An analysis of changes
in the human shape. Especially width to height ratio up to a certain threshold is
considered to detect a fall. And the last analysis is a luck of motion just a
few seconds after the fall. All these steps help to identify falls and can
trigger alarm signals in order to provide medical help quickly.
What are the main benefits of fall detection?
Video analytics
helps timely response to the fact of people fall in the observed area and helps
to providing quick treatment, which
in most cases is critical. Therefore it helps to decrease the number of
accidents and may save lives.
References:
I think that kind of guards in station who can react urgent situation and help fallen person are important too. because people around the fallen person have tendency to do not help fallen people immediately.
ReplyDeleteOf course, it is important. However, with this camera there is no need for guards to be on each platform, they receive alarm call and can come fast. Moreover, train driver receive information as well and can stop before run over fallen person. I think, it is even more important. So video analysis can not save people lives by itself, but it can help a lot
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