Video Analytics for Perimeter Violation Examined

Author: Nick Grange, Published on Dec 17, 2008

Provides metrics and analysis of deploying video analytics for perimeter violation - Editor's note

For the past 3 years, my organization, C3 Shared Services, has been deploying video analytics for many facilities with the highest level of risk in South Africa. This report shares 3 key lessons we have learned:

  • Our customers demand very low levels of false alerts
  • Significant differences in performance exist between different video analytic manufacturers
  • Optimizing the on-site setup is crucial to performance

Low Levels of False Alerts

For our customers, it is common that a fee is charged every time a responder is dispatched to follow up on an alarm. The money for these fees can add up very quickly.  In fact, one of customers used to joke how false alarms from previous systems doubled the responder's salaries.  Unfortunately, high level of false alarms are not acceptable by customers - both from a cost and organization basis.

Significant Differences Between Vendors

We have been participated in numerous tests with many vendors offering video analytics for perimeter violation. The poor results can be alarming. For instance, one test had harsh environment shadows from smoke stacks and pedestrian shadows cast through concrete palisade into detection zones. We had 3 analytic vendors tested with 2 cameras each for 1 week. The results:
  • 6,000 alarms
  • 16,000 alarms
  • 175 alarms
As you can imagine, the first two (generated by two of the most respected European manufacturers) were totally unacceptable.

We went with ioimage and have been using them for many projects over the last 2 yeras.  We have deployed ioimage systems along extensive perimeters in adverse environments.

Across all of our deployments, the probability of detecting a true intruder is essentially 100%. This is actually tested by most of our customers every day and night.

False alarms have been low with the amount of false alerts depending on the environment. In our best performing environments, we rarely have more than 1 false alerts per camera per month. In our most demanding environments, with rain and reflecting light, we do not average more than 1 false alarm per camera per night.  In all cases, the operators find this manageable.

Optimizing On-Site Setup Crucial

On-site system optimization is crucial and consists of two major components: camera optimization and analytic configuration.

Camera optimization is the most important and significant part of our installations.  The cameras must provide clear images and a wide depth of field both day and night to allow for optimal alerting.

For perimeter violation, we place cameras on posts looking down the fenceline.  The distances between cameras depends whether it is a color/IR or thermal camera.
  • For color/IR infrared cameras, we place cameras every 60 meters. Our tests demonstrate that the cameras can reliably alert up to 70 meters. We provide 10 meters overlap of camera coverage to ensure that there are no deadspots and to detect anyone attempting to tamper a camera.
  • For thermal cameras, we place 75 mm thermal cameras every 400 meters. Our tests demonstrate that thermal camera can reliably alert up to 450 meters. We provide 50 meters overlap between each camera (because thermal cameras have a deadspot for the first 50 meters in front of the camera).
For all cameras, we position them 5 meters to 7.5 meters high. This height ensures depth perception.  Short heights make it more difficult to detect movement.

The positioning and the projection of light is important. We always seek to have lighting in front of the camera rather than behind. Specifically, we want to avoid aiming the camera directly into the rising or setting sun.  If we use artifical light (such as an IR illuminator), we want to ensure that the light is projected in parallel. If the light is projected too far downwards, the auto iris may reduce light entering the camera and therefore shrink the depth of the FOV.

We budget 3 or 4 hours for optimization of each camera, with tuning done during the day and a final tuning at night.

As part of this, we setup the analytics in the appliance's web-based setup.  The key element in the setup is to ensure that the depth perception is accurate because cameras provide 2 dimensional images of a 3 dimensional world.  A demonstration of this can be seen in the video below:


Finally, we make sure of monthly maintenace so that the lenses are clean and that the cameras are not moved. Dirty lenses or shifted cameras can both undermine performance so this is crucial.

All of our deployments have been done using analog cameras connected to intelligent encoders. Learn more about the details of a few of our projects.

Conclusion

While video analytics requires field expertise and care in selecting of manufacturers, we have had great success deploying video analytics.

Nick Grange is an Owner at C3 Shared Services.

1 report cite this report:

Camera Positioning Key to Video Analytics on Apr 13, 2009
A routinely overlooked but key aspect to using video analytics is camera positioning. Not simply an implementation issue, camera positioning...

Related Reports

Vivotek 3MP 180 Wall Mount Camera Tested on Feb 28, 2017
Purpose-built wall mount panoramics have become an attractive niche to cover entranceways. In 2013, we bought and tested Vivotek's 1MP...
New Technology: QTSI Seismic Acoustic Perimeter Detection on Feb 28, 2017
Detection of objects across hundreds of acres through obstacles? Perimeter security startup Quantum Technology Sciences (QTSI) claims their system...
Dahua 4K HD Analog Cameras Announced on Feb 23, 2017
HD analog has been gaining popularity (even if Axis hopes otherwise). Last year, HD analog's max resolution doubled from 1080p to 4MP (see our 4MP...
Uniview (UNV) IP Cameras Tested on Feb 22, 2017
"We're #3," in China says Uniview (UNV). While the company significantly trails Hikvision and Dahua in total sales, one notable difference is that...
Hikvision Ezviz Mini 360 Plus - $80 Autotracking Camera Tested on Feb 21, 2017
Autotracking, integrated IR, local storage, full HD, cloud access: $80. That is the claim of Hikvision EZVIZ's new Mini 360 Plus. But for this...
Hikvision PanoVu Multi Imager Tested on Feb 08, 2017
Hikvision has entered the multi-imager market with their 180° PanoVu DS-2CD6986F-H, an 8MP, 4-imager model equipped with ~1/1.8" imagers and...
Axis 15MP Multi-Imager Tested (Q3708-PVE) on Feb 07, 2017
Axis continues to expand in the multi imager market, adding to a segment started with the 33MP Q3709. We bought the Q3708-PVE and tested it...
LAST DAY - Camera Course Winter 2017 on Feb 02, 2017
[NOTE: Today, Thursday is the last day to register.] Learn video surveillance and get certified. IPVM provides live online classes, recorded...
Invisible IR Camera Tested (Vivotek) on Jan 30, 2017
Integrated IR is everywhere in surveillance, from high-end long range cameras to even the lowest cost models. But this IR usually comes with a...
WDR Shootout 2017: Low vs High Cost Cameras on Jan 24, 2017
Multi-exposure WDR was once only available in expensive cameras but in the past few years, this capability has become available even in sub $200...

Most Recent Industry Reports

Vivotek 3MP 180 Wall Mount Camera Tested on Feb 28, 2017
Purpose-built wall mount panoramics have become an attractive niche to cover entranceways. In 2013, we bought and tested Vivotek's 1MP...
New Technology: QTSI Seismic Acoustic Perimeter Detection on Feb 28, 2017
Detection of objects across hundreds of acres through obstacles? Perimeter security startup Quantum Technology Sciences (QTSI) claims their system...
20 Manufacturer Favorability Ranked on Feb 28, 2017
20 security industry organizations' favorability was ranked based on direct feedback from over 100 integrators. In-depth comments revealed insights...
Hikvision Pyronix Releases 'Huge' New Panel on Feb 27, 2017
Hikvision's 2016 acquisition Pyronix has been touting their 'huge' new large system panel. Indeed, the new Euro 280 claims features that are better...
Bosch Favorability Results on Feb 27, 2017
Bosch is one of the most well known brands in the industry and they have combined recently with Sony in video surveillance. But how has Bosch...
ADT CEO: My Daughters Better At Installs Than Most 20 Year Techs on Feb 27, 2017
Times have changed. At the Barnes Buchanan conference, ADT's CEO Tim Whall made an interesting and, surely to some, controversial observation....
Avigilon Favorability Results on Feb 27, 2017
One of the fastest growing companies has turned into one of the rockiest, as cooling growth, management turnover and a roller coaster stock price...
Honeywell Sues Alarm.com For Violating Anti-Trust Laws on Feb 24, 2017
Is Alarm.com about to dominate the smart home software market? That is what Honeywell alleges in its new lawsuit, first reported by...
Axis: "Everything is IP" - False on Feb 24, 2017
Axis is congratulating itself, with executive Fredrick Nilsson declaring: "Now the conversion is all done and everything is IP and analog is...
Advertising Like Avigilon at the ISC West Airport on Feb 24, 2017
Avigilon has grabbed a lot of attention over the last few years advertising at the Las Vegas airport when attendees fly in. But how does that...

The world's leading video surveillance information source, IPVM provides the best reporting, testing and training for 10,000+ members globally. Dedicated to independent and objective information, we uniquely refuse any and all advertisements, sponsorship and consulting from manufacturers.

About | FAQ | Contact