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A VMS application suite includes applications for viewing and investigation of video, user policy setup,
site setup and configurations, and an application for health monitoring and providing alarms of failure or
errors of any of the VMS components.
Operator VMS workstations are used to perform many functions. Consequently it is common for a
workstation to have 2 or 3 monitors directly connected to it presenting video, alarms logs and maps.
A VMS may leverage intelligence embedded at the edge inside an IP camera or encoder (e.g. video
analytics), or it may leverage services provided by 3rd party servers, or it may offer value-added servers on
the NVRs themselves. This is becoming increasingly common as the CPU performance of modern servers
far exceeds what is needed to merely record video. For example, an NVR can provide several channels of
video analytics, or it can analyze the video to detect camera tampering such as redirection, hooding or
Another example of a service would be continuously analyzing the incoming video and deciding whether
the brightness or contrast needs adjusting in real-time based on varying environmental conditions. These
and many other server-based services are available and are largely camera agnostic, although there may be
some variation with standard definition and high definition capabilities because of the volume of the data
to be processed.
Airports should be aware of limitations of operators to watch banks of video monitors for extended periods
of time. In routine situations, event triggered surveillance and other video analytic functions can reduce the
propensity for human error and also reduce the need for, and cost of, employing human operators on
Airports should also pay attention to the graphical user interface (GUI) including the complexity of
cascading drop-down menus and the number of mouse clicks which an operator must make to bring up a
camera directly or on a map or facility drawing, to retrieve stored video images, or perform incident
management functions and to alert responders. GUIs which require more than three mouse clicks for the
most common and/or most critical actions may present training problems and be more susceptible to
operator errors under stressful conditions.
Web-based programs enable video management functions to be accessed, and controlled where so
permitted, over secure Internet links. This capability can be especially valuable for airport security and
management personnel when they are not present at the airport when a security event occurs but can access
the Integrated Airport Security System over secured broadband links.
The system design should consider the need for such capability and coordinate its implementation under
the networked communications infrastructure. The design should also provide for video and data
transmissions to mobile operators who have smartphones, including the simultaneous display of multiple
live video thumbnails. Being able to interact with users who are mobile will become an increasingly
important design issue.
Video analytics, properly applied, offers the potential for improving video-based security operations and
should be considered during the ISSA design process.
The issues are:
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