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Teledyne Flir And Thermal Camera in coming days

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Teledyne Acquiring Flir (World Leader in Thermal Camera world) is an old news, but most probably, its a significant milestone in Thermal Camera industry. While low cost Chinese made thermal cameras have becoming popular, but after COVID19, many countries have stressing to buy thermal camera products made in Western countries.

COVID19 has also created a niche market where combining thermal camera and visual camera made an useful solution. While ther have been other application where both thermal and visual cameras were used, like in surveillance, this was the first time image processing and thermal camera have been combined to make a solution. Teledyne, visual camera and image processing company with intersts in many industries, acquiring the largest thermal camera company seems to be a natural progression for both Teledyne and Flir. Together, they could most probably, make very robust and useful solutions by combining thermal imagery and image processing software to solve many real world problems.

Surveliance and military applications of thermal camera may see huge technical improvements in coming days. We should hope for some solution which will combine various technologies like RADAR, Thermal camera, Machine Learning and wireless communication. These solutions could be useful in industrial as well as security & syrveillance as well as military applications.

List of Thermal Camera Manufacturers

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Covid19 pandemic has given a widespread publicity to Thermal Cameras or Thermal Screening solutions in every domain of human life in 2019. Many thermal companies grew big way during this #COVID19 as industries, public institutions installed automatic thermal screening solutions.

Here is a list of Thermal Camera Manufacturers :
( This is not a complete list, I will keep adding the list of thermal companies. If your company is not listed here, please leave a comment so that I add it asap.)

1. FLIR
I think FLIR is the leader in Thermal Camera in the world.
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Few Optical Parameters one should know about Thermal Camera

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While thermal camera or thermal sensor has many important technical parameters which will determine its accuracy of temperature measurement, there are some optical parameters which one should know to determine its real world usage. Like a normal camera, Thermal Camera also has very important component, lens which will influence the temperature measurement. I will be trying to list and explain those optical parameters one should know or consider while selecting a thermal camera for specific application

1. FOV ( Field Of View) : This is one of the widely known or mentioned optical parameters or specification mentioned in any thermal camera. It can be considered as an window or a solid angle through which electromagnetic radiation will enter into the sensor of the thermal camera and the size of the window is the “field of view” of the camera for that distance. Now, it should be evident that, as its an angle, it will get wider and wider as it goes far from the sensor. This angle of view is dependent on focal length of the lens, longer the focal length, narrower the angle of view is and shorter the focal length, wider the angle of view would be. But the FOV is not dependent fully on the focal length of the lens, but also the sensor or detector size and its pixel pitch as well as its pixel count, both horizontally as well as vertically.
Normally, for a same pixel count, if the pixel pitch is greater, it will have greater FOV than the one with smaller pixel pitch.
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Minimum Technical Specification For Human Body Temperature Screening System

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Continuing with my previous post about “Not upto the mark”  technical specification for human body screening system in India, I thought I would try to put up specifications which are minimum technical requirement for such systems. It may not be complete and totally exhaustive list, but I think this could be good enough to start with.

  1. It should be dual camera system ie It should have both Thermal Camera and Visual Camera.  Why ? Because : Thermal camera is to measure human body ( face skin) temperature measurement and the visual camera for face detection. Face Detection and Face Recognition are two different thing altogether and should not be confused with one another. Automatic face detection helps identify the person who has high body temperature.
  2. Thermal Camera resolution must be 384X288 Pixels or higher, Why ? While Thermal Cameras with both 80X80 pixels and 160X120 Pixels may be able to detect high body temperature in a human face which is of approx 8-14CM width and 10-17CM in height ( just a general figure) with suitable length, but 384X288 Pixels will out form and offer more flexibility than 160X120 Pixels / 80X80 Pixels ones. Higher resolution Thermal camera require at least 1GBPS Ethernet which may be expensive.

    3. … Continue Reading about Minimum Technical Specification For Human Body Temperature Screening System

Fever Screening Tender Specification in India

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Recently, I came across a tender specification of which says smart thermal camera with real-time video and body temperature screening system which made me think about body temperature screening systems being sold or deployed in India.

Here is the screenshot of the tender document which outlines the specification of the “Body Temperature Screening System”

Body Temperature Screening

The specification number 1 and 2 makes sense as they are going to be useful for record keeping as well as any future analysis.

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Thermal Camera as Night Vision Camera

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Thermal camera is being increasingly used a “Night Vision” camera and rightly so. Night Vision has much wider real world usage/application then “con-contact temperature measurement”. Thermal Cameras of Thermal sensors are capable of doing both. And as for developers point of view, using thermal camera as night vision device is much simpler, and faster to manufacture or calibrate too.

When a Thermal Camera is used as a night vision device, it does not require to measure temperature. So, the temperature calibration, compensation and related processing is not required. It makes life of a Thermal Camera manufacturer or developer much easier. All it has to do is, provide corrections and produce an image as sharp as possible.

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