Thermographic cameras allow operators to capture detailed images regardless of ambient lighting conditions. They use an infrared (IR) sensing technology to map heat variations within the sensor’s range and field-of-view, providing movement detection and hot-spot mapping even in total darkness. So, how do thermographic cameras generate such valuable imagery in a range of poor lighting conditions?
An Introduction to Thermography
Thermography refers to a range of imaging technologies that detect radiation in the infrared range of the electromagnetic spectrum rather than the visible range. The visible spectrum represents a tiny portion of the full electromagnetic range; covering wavelengths of approximately 400 – 700 nanometres (nm) in length. Infrared radiation, by comparison, ranges from 700 – 1,000,000 nm, but thermographic cameras generally sample thermal radiation from within the longwave infrared range (approximately 7,000 – 14,000 nm).
Operating Principles of Thermographic Cameras
All objects with a temperature above absolute zero emit infrared radiation. Thermographic cameras use detectors and lenses that are sensitive to this radiation, focussing this invisible light much like the lens of a standard camera. The difference is that thermal images are usually rendered in monochrome or false RGB coloring based on individual pixels temperature.
The amount of radiation emitted typically has a linear relationship to temperature, so hotter areas typically appear brighter on images while cooler areas are darker. By default, thermographic cameras display hot spots as the areas of greatest intensity, while variations in heat can be used to map objects and detect proximity. This is the conventional setup, but it depends on the colormap used. Operators can also invert the display so that darker areas correspond to hot spots and vice versa.
Thermographic Cameras from Terabee
Terabee supplies a dedicated infrared imaging platform that supports two distinct thermographic camera products: The Evo Thermal 90, and the Evo Thermal 33. Our thermal cameras are lightweight and compact, with a small form-factor to enable seamless integration into your work environment. Each one benefits from distinct image capturing capabilities.
Potential Applications of Thermographic Cameras
Thermography is now a key technology in the field of high-performance optics, with established applications ranging from medical imaging to security. It is seeing increasing uptick in non-conventional markets too. With passive infrared sensing, personal privacy is guaranteed at all times, which is an important property for detection systems in domestic and public areas, as well as workplaces. This additional KPI has helped establish thermographic cameras a potential solution in applications as varied as fall detection, responsive display advertising, and room usage optimization. At Terabee, we also expect to see industrial users put greater stock in thermography moving forward, from original equipment manufacturers (OEMs) to warehouses.
Terabee has performed years of joint projects with CERN on leading-edge physics for sensor-based solutions and is the first company supported by Innogex, the French Business Incubation Centre of CERN Technologies.
This company has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 850014
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
Husense, a smart building and smart retail solutions provider, selected and incorporated Terabee’s Time-of-Flight (ToF) People Counting L-XL technology into its prize winning solutions.
“The technology appeared to be the perfect fit for our platform and requirements and the team was incredibly enthusiastic and helpful. Their engineers worked extremely hard and very proactively to help integrate its people counting technology with our platform and as a result we have been able to quickly launch our solution within retail and hospitality and the business sector.”
Michael de By, Husense’s Managing Director
How can we help?
We speak many languages and love working internationally. Reach out and a business representative will get back to you swiftly.