The Ratio of False to Valid Alerts is Key

By: John Honovich, Published on Oct 20, 2009

While false alerts rightfully receives the majority of attention in video analytic performance critiques, these systems must also pass another test - that of balancing the number of false and valid alerts.

VideoIQ provides an example of this in their analysis of baggage left behind problems. Baggage left behind suffers from inevitable false alerts as normal people in public areas temporarily set down their baggage. Additionally, and equally importantly, the likelihood that a bag is really a bomb is extremely low, even in a high risk areas.

The combination of high false alerts (numerous per day) and low actual threats (once per decade or longer?) makes the probability that any actual alarm being a valid one to be worse than 1 in 1,000 (easily).

Academic research [link no longer available] (as well as common sense) shows that such circumstances significantly reduces the effectiveness of such systems.

This ratio can equally be applied to other types of video analytics where the event has a very low probability of occurring.

Minimally, dedicated monitoring services are key to handling this as multi-tasking operators would likely abandon such systems as distracting and unproductive.

Comments : Members only. Login. or Join.

Related Reports

Forced Door Alarms For Access Control Tutorial on Aug 17, 2020
One of the most important access control alarms is also often ignored....
Verkada Falsely Claims "First Native Cloud-based Access Control and Video Security Solution" on Jun 18, 2020
Verkada's false claims continue, this time to be the first native cloud-based...
The Next Hot Fever Detection Trend - $100 Wall-Mounted Units on Jul 06, 2020
The first wave of the booming fever detecting market was $10,000+ cameras,...
Axis Perimeter Defender Improves, Yet Worse Than Dahua and Wyze on Sep 19, 2019
While Axis Perimeter Defender analytics improved from our 2018 testing, the...
UTC Really Screwed Up The Interlogix Shut Down on Sep 27, 2019
UTC has made many mistakes in security over the years, however, the shutting...
False: Verkada: "If You Want To Remote View Your Cameras You Need To Punch Holes In Your Firewall" on Jul 31, 2020
Verkada falsely declared to “3,000+ customers”, “300 school districts”, and...
Temperature Tablet Shootout - Dahua, Hikvision, ZKTeco, TVT + 5 More on Sep 30, 2020
Temperature tablets, aka terminal or stations, have emerged as a 'low-cost...
Uniview Deep Learning Camera Tested on Jul 14, 2020
Uniview's intrusion analytics have performed poorly in our shootouts. Now,...
Faulty Hikvision Cali Colombia Fever Camera Implementation on Jul 20, 2020
The mayor of one of Colombia's largest cities has promoted a faulty Hikvision...
FLIR A Series Temperature Screening Cameras Tested on Jun 04, 2020
FLIR is one of the biggest names in thermal and one of the most conservative....
Terrible Convergint Coronavirus Thermal Camera Recommendation on Apr 01, 2020
A week after Convergint disclosed falling revenue, pay and job cuts,...
Door Fundamentals For Access Control Guide on Aug 24, 2020
Doors vary greatly in how difficult and costly it is to add electronic access...
Axis Compares Fever Camera Sellers to 9/11 on Sep 18, 2020
Axis Communications, the West's largest surveillance camera manufacturer, has...
Anixter Runs Fake Coronavirus Marketing Using Shutterstock Watermarked Images on Jul 24, 2020
Coronavirus faked marketing is regrettably commonplace right now but Anixter...
Spectron IR Thermal Fever Screening System Examined on Apr 14, 2020
Most are quick to avoid "fever screening" and "medical" labels, but...

Recent Reports

Temperature Tablet Shootout - Dahua, Hikvision, ZKTeco, TVT + 5 More on Sep 30, 2020
Temperature tablets, aka terminal or stations, have emerged as a 'low-cost...
New Products Show Fall 2020 Tomorrow Bosch, FLIR, Hanwha, Tyco, Avigilon More! on Sep 30, 2020
IPVM's sixth online show concludes tomorrow with our special temperature...
ButterflyMX Raises $35 Million on Sep 30, 2020
Startup ButterflyMX has raised $35 million for its smartphone based intercom...
Worst Access Control Manufacturers 2020 on Sep 30, 2020
200+ Integrators told IPVM "In the past year, what access control...
Access Control Levels and Schedules Tutorial on Sep 29, 2020
Configuring access levels and setting up schedules is central to maintaining...
Avigilon / Motorola VS Virtual ISC West on Sep 29, 2020
ISC West has historically been so dominant that no player would think of...
Dartmouth College Deploys K3 Temperature Screening on Sep 29, 2020
While Dartmouth College has a $6+ billion endowment, the College has bought...
Hanwha AI Object Detection Tested on Sep 28, 2020
Hanwha has added detection and classification of people, cars, clothing...
Favorite Access Control Manufacturers 2020 on Sep 28, 2020
200+ Integrators told IPVM "What is your favorite access control management...
OnTech Smart Services Partners With Google and Amazon To Compete With Integrators on Sep 25, 2020
A pain point for many homeowners to use consumer security and surveillance is...
The Future of Metalens For Video Surveillance Cameras - MIT / UMass / Immervision on Sep 25, 2020
Panoramic cameras using 'fisheye' lens have become commonplace in video...
Hikvision Sues Over Brazilian Airport Loss on Sep 24, 2020
Hikvision was excluded from a Brazilian airport project because it is owned...
China General Chamber of Commerce Calls Out US Politics on Sep 24, 2020
While US-China relations are at an all-time low, optimism about relations...
Verkada Disruptive Embedded Live Help on Sep 24, 2020
Call up your integrator? Have someone come by the next day? Verkada is...
IP Networking Course Fall 2020 - Last Chance - Register Now on Sep 23, 2020
Today is the last chance to register for the only IP networking course...