The Future of Thermographic Cameras

As government and business leaders start to talk about “returning to normal,” and looking to thermal cameras to help, questions remain about how and whether the latest technology can help prevent the spread of COVID-19.

Across industries, everyone is looking for the right tools to help detect, slow and eventually stop SARS-CoV-2, the virus that causes COVID-19. By now we’ve all come to recognize that resuming operations in any way will require demonstrating measures to protect the health and wellbeing of people in a variety of situations, including travel and work.

One proposed solution is thermal scanners. Unlike most medical imaging approaches, infrared (IR) thermography doesn’t require irradiation or expensive equipment, and presents no health hazard. Infrared radiation emitted from our skin can be detected and used along with information about the ambient environment to estimate core body temperature — which may indicate someone is running a fever, a common early symptom of COVID-19.  While thermal cameras can’t detect a virus or a specific infection, they can help by quickly narrowing down a large pool of possibly infected individuals. And today, this represents the only viable non-contact mass screening approach for fever. The accuracy of the infrared system can, however, be affected by human, environmental and equipment variables. Understanding this multitude of variables — including the ways in which the science, technology and applications themselves interact — will help both users and system makers deliver the best results.

 

Consideration #1: Think about the method

Teledyne Thermometer-1

Thermal detection has been used for fever detection for 20 years now. While older thermometers and thermal cameras, including the type used to detect a different coronavirus, severe acute respiratory syndrome (SARS), had their weaknesses,  newer generations deliver significant performance improvements. More intelligent systems now offer features such as real-time calibration to ambient temperature with sub-degree °C accuracy, providing more accurate readings far more quickly than older generations.

Newer camera systems are also more user-friendly and more reliable, featuring automated target recognition, improved resolution, pairing with a visible-light camera, automated alarms for febrile cases, and clearer outlining of hot spots. This higher degree of granularity improves insight, allowing for a more efficient and faster screening process, and provides on-site health professionals with necessary information to take additional steps when required.

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Advanced image processing features in new radiometric thermal cameras.

 

Consideration #2: Know your baselines

Because the environment can influence temperature measurements, some system makers have devised different ways to establish functional baselines. An early approach, recording a population baseline at each site on each day, proved too time- and resource-intensive. A newer approach, using a reference temperature source, or black body, offers evolutionary improvement. Designed to maintain itself at a specific temperature, the black body device allows the thermal camera system to automatically calibrate. Even better is a radiometric camera, which can interpret the intensity of an infrared signal reaching the camera. This requires more rigorous design and testing by the manufacturer, but it delivers much more precise measurements.

Teledyne Fever-Detection-System-Diagram

Diagram of a fever detection system with black body emitter

 

Consideration #3: Looking in the right place

While thermal cameras can only detect surface temperatures, different parts of the human body more closely correlate with body temperature. Based on recent scientific research, the most reliable spot in the human face is the canthus, the small corners over the tear duct of your eye where the upper and lower eyelids meet. This kind of precise targeting requires accurate pixel calibration capabilities.

 

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The best surface target for estimating core body temperature: the canthus at the inner eye

 

Consideration #4: Checking your performance         

Operating an IR fever screening system in the lab is one thing, but out in the field, the situation becomes more complex. Users need a camera system that is reliable and stable when it comes to critical performance factors like resolution, sensitivity and frame rate. Understanding the performance considerations when imaging a subject at a distance, for example, and realizing the minimum number of pixels required to get an accurate measurement are both essential in staging a fully optimal fever-detection platform.

 

Consideration #5: Finding your way in the “wild west” of thermal imaging in early 2020

People from the many industries that have been devastated by this pandemic – including travel, sports, manufacturing, food and hospitality, and entertainment — are looking for ways to reopen businesses safely while reducing the probability of a second wave of COVID-19. Deploying technology such as IR fever screening systems as part of a range of preventative measures will hopefully support that effort.

As is the case with any promising emergent technology, there is a fair degree of chaos around the nuanced considerations of system design and performance. What standards apply to IR fever-screening devices? Which are being enforced? Who makes them? Will they work? These questions will only be answered with time, and in the meanwhile your best bet is to go with a company that has the experience and expertise to properly implement these solutions for you.

Security Technology of South Texas has been a leading Systems Integrator in the greater South Texas area for over 7 years. To get your location assessed and a custom solution designed for thermographic cameras contact us 24/7.

 

Call us 24/7 at 210-446-4863

The Future of Epidemiologically Driven Access Control Post-COVID 


Business and organizations across the world are dealing with the dire economic and personal impacts of COVID-19. Confidence is now a major issue in helping people return to work and restart their normal activities, whether that’s sending children back to school or visiting shops.

Organizations looking to safeguard against COVID-19 can now bring back the confidence by choosing from newly developed solution ecosystems designed to create safe and healthy environments.

Access control measures designed to target those who are symptomatic are just one piece, and technologies to measure and enforce social distancing and mask compliance are also available. 

Following are some solutions to a multifaceted COVID response.

  • Machine Learning Kiosks are the right choice for venues wanting to ensure social distancing in their building and the use of face masks at all times.

  • Temperature Screening: Perfect for organizations looking for the ability to scan a person’s temperature and create standard procedures to help operators consistently manage results.

  • Control Center Temperature Screening: Ideal for organizations with video management software and that need to implement an integrated thermal screening solution.

  • Thermal Camera Temperature Screening: Designed for organizations looking to add a standalone temperature screening thermal camera to their existing network.

 

 

Ensure social distancing 
 

Following government guidelines and maintaining appropriate social distancing is essential in combating COVID-19. Kiosk AI helps you create healthy environments for visitors by using people counting technology, combined with artificial intelligence, to track entrances and exits from your establishment to ensure you are always at optimum levels for social distancing.

As this solution is an automated system you won’t need to scale up your overheads during these challenging times. At the entrance to your business a screen will display the number of people in your venue, plus maximum capacity, and inform visitors if they are free to enter.

 Ensure the use of face masks to create safe environments 

Encouraging people to restart their regular activities is all about giving them the confidence in their surroundings and the proper use of face masks has been proven as an effective method for limiting infection rates. AI Kiosks deliver this valuable layer of protection by monitoring people entering your venue and detecting the ones not wearing a face mask. Visitors not wearing a mask are automatically advised to wear one before proceeding, with alarms enabling you to respond immediately to non-compliance.

Procedures for high temperature screenings 
 

Temperature screening begins by delivering a safe and contactless screening of a person’s temperature using a thermal camera and a heat emitter device, known as a Blackbody, that is used by the camera as a reference point.

If the person is below the defined level, for example 35°C, then no action is required and the person can pass swiftly into the building. However, if the threshold temperature is exceeded then an on-screen alert appears and the high temperature procedures are activated. These will guide the operator in delivering the correct response to the results and ensure a consistent approach that helps avoid human error.

Create custom procedures for different categories of people 
 

Temperature screening measures provide a tailored and adaptable solution for helping organizations manage temperature screening results. Custom operating procedures can be created to guide operators in how they deal with different categories of people, whether they are employees, visitors, customers or contractors. Procedures can also be instantly changed to keep pace with changing requirements.

By implementing these custom procedures organizations can provide:

  • Peace of mind for employees and visitors beyond checkpoints

  • A duty of care by alerting and helping employees and visitors manage screening results

  • The processes to manage the threat of COVID-19 within their workplace

Security Technology of South Texas offers a full suite of access control measures to fight against the spectre of COVID. Whether you need to implement just thermal cameras or a complex integration of multiple solutions, we can set your business up to be safe and compliant.
Call us 24/7 at 210-446-4863

InVid Body Temperature System

 

InVid Tech has released a Dual Spectrum Camera System to measure the temperature of objects, humans, or animals. While alternative solutions do exist for ensuring the basic health of people coming and going from a location, this system can automatically and accurately read the temperature of multiple people at the same time every second and has an accuracy of + or -0.54 Degrees F. This is a viable solution in high traffic areas and where it would be unreasonable to place a person to do manual contactless temperature readings.

When an individual with a temperature above the set threshold comes through, the system alerts. Unlike cheaper imitation products on the market, this high-end system is complete and requires no other systems or human intervention to work. Included in the product is an always-on calibration device to make sure readings remain accurate. This device is critical in making accurate readings from a distance and for capturing the temperature of multiple people.

 

By combining facial recognition technology into this system, the camera differentiates human faces from other information in the frame. This triggers it to scan for a temperature reading, which if elevated, will in turn trigger an alert. The system consists of the camera itself, the CMS software to which recordings and alerts are sent, and a black body object which is used to calibrate for temperature.

 

Features of this system include:

  • On-board temp-detection algorithm
  • One IP address two channels
  • Standard Image: 2 Megapixel (1920 x 1080) Resolution
    Thermal Image: Effective pixels 400×300
  • Sensitivity 40mK
  • Thermal: 8mm Fixed lens, Visible: 2.7-12mm motorized lens
  • Accuracy within 0.54°F  (0.3°C)
  • Body detection, up to 16 Targets
  • Response Time 30ms
  • 17 color control

 

With the world seemingly changed by COVID-19, these systems will only continue to increase in demand.  Many businesses wish to protect themselves from liability, and a system that can pick the sick person out of a long line of people passing through a checkpoint is an efficient and cost-effective way to do that.

 

At Security Technology of South Texas, we design monitored video systems from the ground up to fit your needs or integrate intelligent monitoring into your existing system of cameras. Contact us today to get a quote on a video analytics system for your property.

 

Please contact us through email at admin@gostst.com on our website or by phone    at 210-446-4863 24/7 to schedule a consultation.

Assa Abloy Access Control and the G100

 

The Adams Rite G100 digital glass door lock from Assa Abloy is an aesthetically pleasing wireless digital lock that can seamlessly integrate into existing access control infrastructure. This lock is an easy way to add access control features to any glass door while still being cost-effective and maintaining the aesthetics of the installation. It is surface mounted to provide reliability in interior commercial spaces.

This lock uses sophisticated encryption over a wireless connection to ensure security even while transmitting through the air. The AES 128-bit wireless communication between the G100 lock and the hub conform to the highest level of data security. It does not require any wires or modification to the glass as it is easily surface mounted using a bracket installation. It works with both single doors and double doors.

As an addition to existing access control systems, the G100 leverages existing system software and 13.56 MHz credentials, making use of minimal field configuration for easy installation. Its unique credential cache ensures access when the lock is offline from the EAC system.

Interior door security is enhanced with either single (card only) or dual-factor (card and keypad) authentication. Door status is monitored in real-time with REX, DPS, and low battery signals. This lock is also capable of remote lock/unlock in less than 10 seconds from the host EAC system.

As we move further into the era of IoT and full broadband wireless connectivity, many will choose to go as wireless as possible with their security infrastructure. Products like the G100 combine both function and security with beauty to create a total package making intrusive wired solutions seem antiquated and obsolete by comparison. With the speeds and low latency that 5G promises, we can expect entire systems of cameras, access control products, and data and analytics storage and processing to be connected through encrypted wireless protocols and out to the cloud.

 

 

At Security Technology of South Texas, we design monitored video systems from the ground up to fit your needs or integrate intelligent monitoring into your existing system of cameras. Contact us today to get a quote on a video analytics system for your property.

Please contact us through email at admin@gostst.com on our website or by phone    at 210-446-4863 24/7 to schedule a consultation.