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

Hikvision 12MP Fisheye Camera Tested (DS-2CD63C2F-IV) on Jun 14, 2018
Hikvision's DS-2CD63C2F-IV is their flagship panoramic camera, with a 12MP imager, 15m integrated IR, smart codec, and more. We tested the 63C2 in...
Avigilon H4 Multi-Sensor Adds 32MP, H.265, Analytics on Jun 13, 2018
Avigilon has announced the H4 Multisensor, the successor to their repositionable multi imager line, adding features like H.265, integrated IR,...
ReconaSense - The AI / Access Control / Analytics / IoT / Video Company Profile on Jun 12, 2018
One company's ISC West booth stood out for displaying a light-up tower of buzzwords. The company, ReconaSense, pledged to be 'making sense of it...
Introducing Effective PPF (ePPF) - Improving Video Surveillance Designs on Jun 11, 2018
Pixel density (PPF / PPM) is the best metric the industry has to define and project video quality. It allows simple communication of estimated...
Hanwha Low-Cost 4MP Camera Tested (QNV-7010R) on Jun 11, 2018
4MP usage is increasing noticeably, as IPVM 2018 resolution statistics show. And low-cost, fixed focal cameras, are popular for budget...
Bosch IVA Video Analytics And Motion+ VMD Tested on Jun 06, 2018
Bosch's video analytics now ship on nearly every model, from indoor domes to high-end 5MP starlight cameras.  In this test, we evaluate Bosch's...
Hikvision PanoVu 20MP Flexible Camera Tested on Jun 01, 2018
Hikvision has released their first repositionable multi imager cameras with integrated IR included, atypical in competitors. We bought and tested...
Stats: Upgrading Cameras Far More Common Than Replacing Failed Cameras on May 30, 2018
The old saying "If It Ain't Broke, Don't Fix It" does not apply here. New IPVM statistics show that 60% of cameras that are replaced still work but...
Oncam 12MP Fisheye Camera Tested on May 29, 2018
Oncam has made their name since the early 2000s as a fisheye specialist, focusing only on panoramic cameras. To see how this specialist stacks up...
Hanwha Wisenet X Analytics and VMD Test on May 24, 2018
Continuing our updated testing of camera analytics, we tested Hanwha's Wisenet X analytics for over two weeks in multiple scenes, indoors and out,...

Most Recent Industry Reports

IPVM Vulnerability Scanner Released on Jun 18, 2018
IPVM is proud to announce video surveillance's first and only cybersecurity vulnerability scanner. This tool allows quickly and simply...
Hikvision Corrects False Cybersecurity Announcement on Jun 18, 2018
Hikvision has corrected a false cybersecurity announcement that claimed a British government-sponsored program endorsed the cybersecurity of...
July 2018 IP Networking Course on Jun 16, 2018
The last chance to save $50 on registration is this Thursday, June 21st. Register now and save. This is the only networking course designed...
The Dumb Ones: PSA's Bozeman On Cybersecurity on Jun 15, 2018
The smart ones are the hundred people who flew to Denver and spent $500+ on a 1.5-day conference featuring Dahua as a 'cyber responsible partner',...
Amazon Ring Launches $10 Monthly Professional Alarm Monitoring on Jun 15, 2018
Amazon's Ring has announced an alarm system with 24/7 professional alarm monitoring for $10 per month, a fraction of the $30+ per month traditional...
Axis Releases First New Access Controller In 5 Years (A1601) on Jun 15, 2018
It has been 5 years since Axis 2013 entry in the physical access control market, with the A1001 (IPVM test). Now, Axis has released its second...
Hikvision 12MP Fisheye Camera Tested (DS-2CD63C2F-IV) on Jun 14, 2018
Hikvision's DS-2CD63C2F-IV is their flagship panoramic camera, with a 12MP imager, 15m integrated IR, smart codec, and more. We tested the 63C2 in...
Four Major Outdoor Camera Install Problems on Jun 14, 2018
Over 140 integrators told us the top four camera installation mistakes that lead to unexpected problems and failures. Their comments often...
Security Sales Course Summer 2018 on Jun 14, 2018
Based on member's interest, IPVM is offering a security sales course this summer. Register Now - IPVM Security Sales Course Summer...
China Public Video Surveillance Guide: From Skynet to Sharp Eyes on Jun 14, 2018
China is expanding its video surveillance network to achieve “100%” nationwide coverage by 2020, including facial recognition capabilities and a...

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