Products > Thermal Imaging

Thermal Camera for face temperature

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publioelon:
Hi, I'd like to ask for help in choosing the best dongle-type thermal camera for android devices. I would like to detect face temperature changes, specifically using dongle-type cameras. From what I've been looking, there are options like HTi-201, Hi-301, Infiray TS3 Pro, Seek Compact, and other variations. For the specific task of choosing a dongle-type thermal camera, which camera is the most reliable and in addition will be good for face temperature inspection?

Bill W:
Some initial questions ....

Do you want to measure absolute accuracy, or just to compare ?
How accurate do you need to be ?
Do you want to measure 'face skin surface temperature' or are you really hoping to measure body (medical) temperature ?

As a summary most cameras cannot measure better than 2°C, and dongles can be twice that or worse.

There is no valid relationship between apparent skin surface temperatures and body temperature, too many variables of sweat, air flow etc.  At best you get 'I might want to measure that hot person properly' but nobody owns up to how many with internal high temperatures get past a surface temperature check.

Bill

publioelon:
Hi, thanks for your reply. I need more image quality and resolution than temperature values, I am planning to use a thermometer for referencing. I plan to use it for feature extraction using CNNs, therefore i will stick to just grabbing frames from the face.  If possible, maybe i'd like to observe some veins on the face too.

Vipitis:
If you want high resolution, both in terms of pixels and dynamic range, look at the higher end: ThermApp Pro, Thermal Expert V1, You can get VGA resolution but it comes at a hefty price. And you should really question why you are using a dongle in the first place here.

If you want to do a learning based project, there is a database available of a few hundred faces from a selection of angles. But I am not sure if that is radiometric.

publioelon:

--- Quote from: Vipitis on August 07, 2021, 08:36:21 pm ---If you want high resolution, both in terms of pixels and dynamic range, look at the higher end: ThermApp Pro, Thermal Expert V1, You can get VGA resolution but it comes at a hefty price. And you should really question why you are using a dongle in the first place here.

If you want to do a learning based project, there is a database available of a few hundred faces from a selection of angles. But I am not sure if that is radiometric.

--- End quote ---
I'd like to observe features related to fever symptoms. The Hti-301 option looked interesting it's very high resolution and definition to a very reasonable price.  I was wondering if the images are in form of raw data, radiometric and wether they are 8 bit or 14 bit. I am very inclined towards this option. I wasn't able to find any camera that surpasses the HTI-301 quality , to the best of my knowledge there isn't criticism around this camera for some reason.
I wonder if the calibration shows accurate temperature readings?

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