Video Analytics for Perimeter Violation Examined

Author: IPVM, 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

Pelco GFC 4K Dome Camera Tested (IMP831-1ERS) on Mar 12, 2019
Pelco has finally released their first 4K IP camera, after years of competitors' releases. Is this move too late? Or is their new GFC Professional...
BCDVideo Expansion And Switch From HP To Dell Examined on Mar 11, 2019
BCDVideo says they have more than tripled revenue in the past 5 years and are continuing to grow, powered most recently by switching their lead...
Church Technology Director Security Interview on Mar 07, 2019
With 40+ years of experience in IT from a wide array of verticals, including US and foreign military, and large corporate and industrial settings,...
Police Department Surveillance Manager Interview on Feb 28, 2019
Former Memphis PD Surveillance Manager, Lt. Joseph Patty retired months ago, but kept busy during his decades on the force, working to build up...
Mobotix Move OEM Camera Line Tested on Feb 25, 2019
Mobotix has long been criticized for not offering integrated IR, mechanical cut filters, varifocal lenses, optical zoom and other features that...
BluB0x Company Profile on Feb 20, 2019
BluB0x has doubled in revenue every year since its founding in 2013, according to CEO Patrick Barry. We originally reported on them in 2015. At the...
Axis IR Multi Imager Camera Tested (P3717-PLE) on Feb 18, 2019
Axis has released their first IR multi imager, the P3717-PLE, a repositionable model listing 360° IR illumination and flexible positioning,...
Hanwha Smaller Multi Imager Tested (PNM-9000VQ) on Feb 14, 2019
Hanwha's first repositionable multi imager PNM-9081VQ tested well, but was huge, over 12" wide and weighing in at over 10 pounds. Now, they have...
Solink Raises $12 Million - Company Profile on Feb 12, 2019
Most industry professionals have never heard of Solink, a company whose tagline is: It's time to revolutionize the way business uses...
Bandwidth vs Low Light Shootout - Avigilon, Axis, Bosch, Dahua, Geovision, Hanwha, Hikvision, Uniview, Vivotek on Feb 08, 2019
Nighttime bandwidth spikes are a major concern in video surveillance, but do all manufacturers' cameras perform the same? Are some more consistent...

Most Recent Industry Reports

Avigilon Launches 'Renewed Products Program' on Mar 19, 2019
There are lots of 'pre-owned' cars but pre-owned IP cameras? While such programs are common in other industries, in video surveillance, they are...
Hanwha Tax Evasion Probe, Camera Division Implicated on Mar 19, 2019
A Hanwha group subsidiary was raided as part of a tax evasion probe. While a Korean news media report listed the raided entity as 'Hanwha...
Genetec Security Center 5.8 Tested on Mar 19, 2019
Genetec has released Version 5.8. This comes after a wait of more than a year that caused frustrations for many Genetec partners. Our previous...
Retired Mercury President Returns As Open Options President on Mar 18, 2019
Open Options experienced major changes in 2018, including being acquired by ACRE and losing its President and General Manager, John Berman who...
Large US University End-User Video Surveillance Interview on Mar 18, 2019
Schools have become targets in modern days of active shooters and terrorist fears. The need for video and access security is high. Universities...
Hikvision Favorability Results 2019 on Mar 18, 2019
Hikvision favorability results declined significantly in IPVM's 2019 study of 200+ integrators. While in 2017 Hikvision's favorability was...
ONVIF Favorability Results 2019 on Mar 15, 2019
In the past decade, ONVIF has grown from a reaction to the outside Cisco-lead PSIA challenge, to being the de facto video surveillance standard...
Installation Course - Last Chance on Mar 14, 2019
This is the last chance to register for the March Installation course. This is a unique installation course in a market where little practical...
City Physical Security Manager Interview on Mar 14, 2019
This physical security pro is the Physical Security Manager for the City of Calgary. He is a criminologist by training with an ASIS CPP credential....
US Drafting Separate Rule for NDAA Dahua/Hikvision 'Blacklist' on Mar 14, 2019
The most debated provision of the NDAA ban of Dahua, Hikvision, Huawei, et al. is the so-called 'blacklist' provision which would ban any company...

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