Author Topic: Virus outbreak in Wuhan, China - Thermal cameras likely to be deployed again  (Read 3701 times)

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Offline Fraser

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I just read that a previously unknown strain of the Coronavirus has appeared in Wuhan, China.
It appears to be closely related to the SARS virus and causes respiratory problems and even death. As with the previous SARS outbreak, the virus causes a fever. I believe it highly likely that ports of entry into many countries will now deploy their countermeasures against the spread of this nasty virus. One countermeasure is to monitor the passengers entering a country at ports by using thermal cameras configured for human skin temperature sensitivity and set to alarm on anyone who exhibits elevated skin temperature so that further tests may be carried out and questions asked.

Thermal cameras can be a very effective means to screen large numbers of people for illnesses that cause a fever. To be effective, the thermal cameras need to be good quality radiometric types with good resolution and known accuracy. Reference “Blackbody’ sources are commonly used in the field of view as a known temperature reference.

Those travelling through ports, especially in Asia may see these camera systems operating at designated health check points or on the passport check approach. Those travelling to Wuhan need to take care, it sounds nasty.

New China virus: Number of cases jumps as infection spreads to Beijing https://www.bbc.co.uk/news/world-asia-china-51171035

Fraser
« Last Edit: January 20, 2020, 11:30:22 am by Fraser »
 

Offline Fraser

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Sci-Hub will help to read this paper on the effectiveness, or not, of thermal cameras to spot SARS.

https://www.ncbi.nlm.nih.gov/pubmed/15719959

Fraser
 

Offline Fraser

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Another interesting paper...

https://www.ncbi.nlm.nih.gov/pubmed/16044829

Fraser
 



Offline Fraser

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Comment on use of thermography in the detection of SARS.

https://irinfo.org/06-01-2003-seffrin/
 

Offline Fraser

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Thermal camera use against SARS in Singapore

https://www.wsj.com/articles/SB105148535546154300
 

Offline Vipitis

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Have you ever seen fever scan system sold on the used market? Or do they just get store at the airports for future use? It would a great calibrated camera and black body reference...
 

Offline Fraser

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No surprises, FLIR thermal cameras have been popular for SARS detection. There are other specialist thermal cameras that are designed specifically for fever detection though.

https://flir.gcs-web.com/static-files/1e785e26-da6a-4778-9650-f6c2d8ce8c6e
 

Offline Fraser

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Vipitis,

No I have not seen any on the secondary market yet. The specialist models made for Port of entry fever detection are still quite new and likely get stored in a SARS or other Virus response kit when not needed. I would not expect to see any used ones until newer, better, models replace the originals. The dedicated fever detection thermal cameras are basically medical thermography cameras configured to provide the best possible imaging over a relatively narrow temperature range to cover the human bodies skin temperature of the head. Alarm functions are added and the cameras have excellent temperature stability over the narrow temperature range. The Blackbody provides the required accurate reference for the system. Those Blackbody references are very nice indeed. Compact and accurate. Bill W told me that many use a micro machined surface to provide a high performance emission surface.

I remember seeing a UK company on the news that has produced a compact thermal camera for the specific needs of SARS screening at ports of entry. I shall have to see if I can find them and provide details.

Fraser
« Last Edit: January 20, 2020, 10:59:05 am by Fraser »
 

Offline Fraser

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I went straight to the UK company that makes a miniature fever scanning thermal camera. As I suspected, it is Thermoteknix who make it and the required screening software.

They are using a Miracle camera with dedicated software. See attached pictures.

http://www.thermoteknix.com/products/oem-thermal-imaging/fevir-scan-fever-screening-system/

Fraser
« Last Edit: January 20, 2020, 11:04:34 am by Fraser »
 

Offline Fraser

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I am interested to see that Thermoteknix show a ISOTECH 988 Blackbody as the temperature reference in their FeVir kit. I own one of those  8). The 988 was designed as an accurate calibration check source for medical use infrared thermometers and thermal imaging devices. It has a temperature range of 20C to 45C with a resolution of 0.01C.

https://www.isotech.co.uk/infrared-calibrators/general-purpose/general-purpose/blackbody-source-model-988

This Blackbody was reviewed by me on this forum some time ago. It is based on a PID, H-Bridge driver and Peltier Element. The emission plate has concentric ring grooves in its surface to aid performance.

Fraser
 

Offline Fraser

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My look inside the ISOTECH 988 medical use Black Body reference source....

https://www.eevblog.com/forum/thermal-imaging/thermal-camera-black-body-calibration-check-source-inside-the-isotech-988/

It is worthy of note that the 988 temperature range is limited only by the PID boundary temperature setting and may be increased to -5C to +80C if desired. Lower temperatures than -5C causes significant frost formation and higher temperatures than 80C exceed the safe operating temperature of the Peltier element and shortens its life.

Fraser
« Last Edit: January 20, 2020, 07:31:57 pm by Fraser »
 

Offline Fraser

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Fever detection through thermography demonstration video using FLIR static camera.

https://youtu.be/sYAFLxwA4H4

Fraser
 

Offline Fraser

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Not surprisingly, many thermal camera manufacturers have been keen to push their cameras for fever detection duties.

https://www.testo.com/en-UK/products/thermography-fever-detection

 The problems arise when a camera is more of a generic model that requires the user to carefully configure it. Dedicated solutions such as that from Thermoteknix enable easy deployment and use with custom software providing exactly what the user needs in an easily understood manner.

Even SATIR have tried to push their cameras for fever detection. Let’s just say I do not personally have a great deal of confidence in their products ! YMMV  ;)

https://satir.com/application/thermal-imaging-and-fever-detection

I doubt SEEK Thermal cameras are used in this particular application as many have excessive levels of uncertainty when it comes to radiometric measurement accuracy. Horses for courses.

Fraser
« Last Edit: January 20, 2020, 02:57:29 pm by Fraser »
 

Offline Fraser

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Interesting FLIR document on fever screening.

https://www.overloadsrl.it/easyUp/file/ebola%201.pdf

Fraser
 

Offline Vipitis

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The FevIR core is similar to the one I got. Just the radiometric variant, I believe the software parts I acquired have some documentation about FevIR operation as well.

I wonder how well a stationary hot source holds over a long period. Even with a shutter the sensor might drift on those pixels.
 

Offline Stray Electron

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there was ebola outbreak in africa. if you got infected, no thermal camera will be any use to you.

   The cameras aren't intended to help you, they're intended to keep you out of the country and to keep you from infecting other people.
 

Offline Gyro

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I was travelling back from Taiwan during the last SARS outbreak and they had the cameras set up at Hong Kong. I'd taken a nasty gluten hit the previous day (I'm Coeliac) and was terrified that they would drag me aside and I would miss my flight (or worse). I've never managed to hunch down so low before or since (I'm 6'3"). I must have looked really suspicious! :D


P.S. Come to think, do don't remember now, ever not seeing cameras, I think they may be semi-permanent at some hub airports (like HK).
« Last Edit: January 20, 2020, 02:25:47 pm by Gyro »
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Offline coppice

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In the 2003 SARS outbreak all the crossings between HK and China quickly installed thermal cameras above every immigration counter. They are were all Chinese products, but I can't remember which brand. HK airport installed thermal cameras with a much wider field of view, to spot people as they flowed towards the immigration area. Someone with a spot check IR thermometer went up to anyone looking excessively warm on the thermal camera, and checked their forehead up close.
 

Online Bud

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The liberated E4 has the Screening feature.
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Offline JohnG

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Interesting, because I had to walk through such screening crossing from Shenzhen to Hong Kong in mid December.

John
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Offline blueskull

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We (SUSTech, Southern University of Science and Technology) already have robotic forehead temperature sensors deployed at out entrances, and in addition, security guards manually test everyone coming in with a thermal gun.
 

Online tautech

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Interesting, because I had to walk through such screening crossing from Shenzhen to Hong Kong in mid December.

John
For me the same at the Futian crossing coming back to HK from a day in the Shenzhen heat although in late 2014 they pulled you aside and pointed the camera at your forehead.
I guess I must have looked like a tomato but they waved me through after a temp check.
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Offline Cat

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Here a few screenshots from the german television news Tagesschau showing the use of thermal imagers.
The thermal imager in the first part has a white housing with cooling vents and is mounted on a pole. Unfortunately the resolution is too low to read the marking.
The imager in the second part is obviously from NEC.

Source (could be geoblocked):
https://download.media.tagesschau.de/video/2020/0120/TV-20200120-2222-3101.webxl.h264.mp4
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Offline Cat

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And a few more pictures from other news. It seems like a lot of different products are used.

FLIR with temperature alert, source: https://thethaiger.com/hot-news/tourism/chinese-scientists-identify-the-wuhan-virus-screening-continues-on-thai-bound-flights
Unknown thermal imager, source: https://www.krqe.com (geoblocked because GDPR)
AVIO InfReC, source https://www.washingtonpost.com (paywalled)
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Offline coppice

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For me the same at the Futian crossing coming back to HK from a day in the Shenzhen heat although in late 2014 they pulled you aside and pointed the camera at your forehead.
I guess I must have looked like a tomato but they waved me through after a temp check.
Did you pass through the road crossing or the metro crossing? The metro crossing didn't exist in 2003. In 2003 the road crossing had monitors installed at every immigration counter on both the China and HK sides, but they were not replaced when they got old. The few times infection scares (bird flu, swine flu, etc) have occurred since 2003 they have monitored the crowd, rather than the individuals at the counters. The crowd monitoring seems to have worked well at HK airport, so perhaps what is what they will do at all the ports moving forwards.

 

Offline Fraser

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Thermal Cameras do appear to be an efficient and effective tool in the detection of people who have a fever amongst a crowd. Provided the cameras are correctly configured they will highlight people with a forehead temperature exceeding expected levels. Even false positives are better than letting someone spread the virus in your country like Typhoid Mary. The advantage of thermal cameras over using IR thermometers is large area detection and context. The operator can spot multiple fever ‘suspects’ and see where they are exhibiting a high temperature. To me, it seems an excellent application of the technology.

Fraser
« Last Edit: January 21, 2020, 12:06:03 pm by Fraser »
 

Online tautech

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For me the same at the Futian crossing coming back to HK from a day in the Shenzhen heat although in late 2014 they pulled you aside and pointed the camera at your forehead.
I guess I must have looked like a tomato but they waved me through after a temp check.
Did you pass through the road crossing or the metro crossing? The metro crossing didn't exist in 2003. In 2003 the road crossing had monitors installed at every immigration counter on both the China and HK sides, but they were not replaced when they got old. The few times infection scares (bird flu, swine flu, etc) have occurred since 2003 they have monitored the crowd, rather than the individuals at the counters. The crowd monitoring seems to have worked well at HK airport, so perhaps what is what they will do at all the ports moving forwards.
Metro after getting off the HK train system then onto the Shenzhen trains and the reverse in the afternoon.
Late October '14 when I went to see Siglent but I was only there for the day.
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Offline pauledd

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Iran unveils its "own" thermal cameras...

https://www.liveleak.com/view?t=uBQDM_1583957956
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Offline Fraser

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Very interesting  :-+

It was nice that the report contained quite a lot of imagery from both the camera and also its production. That Microbolometer module design looks familiar.

I recognise the Black body they are using in the production area ...... it is American !

I have to wonder whether they are fabricating the microbolometer or have sourced them from outside Iran.

From a political point of view, this is a challenging situation...... suddenly thermal imaging technology is being seen as an essential tool in the detection of the corona virus, yet the technology is often controlled in its sale to some countries. On humanitarian grounds that could be considered unacceptable. However...... using thermal imaging cameras to detect a person who has a fever is not as reliable or simple as some might have you believe.... but that is something for another day and another thread.

Fraser

« Last Edit: March 14, 2020, 11:25:24 am by Fraser »
 

Offline Fraser

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« Last Edit: March 14, 2020, 10:56:30 am by Fraser »
 

Offline Ultrapurple

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@pauledd - Thanks for finding and sharing that link. Some things that interested me:

1 - the presumably 'home-grown' thermal screening software seen running has all its labels and controls in (US) English

2 - I can't quite read the grey text in the bottom right of the screen but it certainly starts
"Activate ........."
"Go to Settings to activate......."

949342-0

Does anyone recognise the software?

Separately, I wonder how much I could get if I hired out some of my radiometric thermal cameras to local businesses...?
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Offline Bill W

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I hope the Iranians do not need their black bodies serviced, the service centre is in Israel

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Offline Vipitis

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so in the video they mentioned only 5 countries on the world have this technology? Which do they mean?
If Iran now openly has this technology and spreads it past their military, it will eventually fall in the hands of more terrorist groups in the region easier. Is it time for the US to drop some regulations to make US companies more competitive internationally?


@Ultrapurple they didn't pay for Windows and use it more than 30 days.
 
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Offline pauledd

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... the presumably 'home-grown' thermal screening software seen running has all its labels and controls in (US) English

Seems to be a quite big core with shutter, maybe a Chinese "in-house" one delivered with an SDK? The software looks like those that you get sometimes with cheap webcams from Ali, you can see how bad the buttons design is with that text overlaying so they spend not a lot of effort into version 1.0.0.0  :D
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Offline bap2703

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The 5 countries are probably something like: US, France, China, Israel, Japan, Russia, Turkey...  Well the order of magnitude is right.

That iranian camera definitely use chinese hardware. Maybe Guide plug series?
 

Offline pauledd

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Maybe they are indeed Iranian devices... That company "IOI" (ISFAHAN OPTICS INDUSTRIES) is a subsidiary of IEI (Iran Electronics Industries) and they are "manufacturer of Thermal Imagers" as globalsecurity.org says...
https://www.globalsecurity.org/military/world/iran/industry-ieicorp.htm

EDIT: Also interesting: http://www.sadefensejournal.com/wp/iranian-ru-series-thermal-weapon-sights-in-syria/
« Last Edit: March 16, 2020, 12:50:48 pm by pauledd »
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Offline IwuzBornanerd

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I see Amazon has now bought into the system:

https://www.reuters.com/article/us-health-coronavirus-amazon-com-cameras/exclusive-amazon-deploys-thermal-cameras-at-warehouses-to-scan-for-fevers-faster-idUSKBN2200HT

Quote
From the article:
The company performs a second, forehead thermometer check on anyone flagged by the cameras to determine an exact temperature, one of the workers said. An international standard requires the extra check, though one camera system maker said the infrared scan is more accurate than a thermometer.

I wonder which system maker that is.
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Offline M0HZH

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My guess would be FLIR, as they've been more vocal in advertising thermal imaging for these purposes. Fluke on the other hand seem quite reserved. Both companies have very long supply chain lead times for (most) thermal cameras now, 3+ months here in Europe. Unless you're a governmental entity dealing directly with them, you're not getting one.

...
2 - I can't quite read the grey text in the bottom right of the screen but it certainly starts
"Activate ........."
"Go to Settings to activate......."
..

That's the Windows activation message in the background :).
 

Offline IwuzBornanerd

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Amazon can't get enough of the things:

https://www.reuters.com/article/us-health-coronavirus-amazon-com-cameras/exclusive-amazon-turns-to-chinese-firm-on-u-s-blacklist-to-meet-thermal-camera-needs-idUSKBN22B1AL

Quote
China’s Zhejiang Dahua Technology Co Ltd (002236.SZ) shipped 1,500 cameras to Amazon this month in a deal valued at close to $10 million, one of the people said. At least 500 systems from Dahua, the blacklisted firm, are for Amazon’s use in the United States, another person said.

...To see if someone has a fever, Dahua’s camera compares a person’s radiation to a separate infrared calibration device. It uses face detection technology to track subjects walking by and make sure it is looking for heat in the right place.

...In response to questions about the thermal systems, Amazon said in a statement, “None of this equipment has network connectivity, and no personal identifiable information will be visible, collected, or stored.”

I am not opposed to exercise, unless it is an exercise in futility.
 

Offline Vipitis

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So privacy concerns and facial recognition.

I think people are confusing the terms. They probably use some simple highlight marker or even a landmark detector trained on thermal images. Yet this is no facial detection and not recognition. It wont be able to identify different people. It might be able to make a list of different people and differentiate between them. But it's doing it on a ACG vector and not a normalized absolute vector. Depends on how the model is trained, but my test were not successful and the models on Google photos and windows photos did not work at all.

I doubt there is a custom model trained on thermal images.
 

Offline blueskull

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I doubt there is a custom model trained on thermal images.

I got tensorflow and tiny yolov2 running on K210 in less than a week. Nowadays machine learning is just commodity skill.

So privacy concerns and facial recognition.

No. It's purely political. Dahua is known for making human tracking and behavior analyzing cameras for suppressing unrest in Uighur areas of China.
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Offline BravoV

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No. It's purely political. Dahua is known for making human tracking and behavior analyzing cameras for suppressing unrest in Uighur areas of China.

Its just convenient escape goat and the right timing for the presidential election, this will be intensified further until new president is elected.

Hello ‘Chinagate’: Why blaming Beijing is all the rage this US election cycle

Interesting quote ...
"...the fact that both parties think nothing of risking a confrontation with a major world power merely as a way to win power at home is… disturbing."

Sorry, OOT post, just couldn't help it ... duck and run.

Offline Electro Detective

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Are these cameras easily removable so people can 'borrow' them during the quiet or curfew evenings

for useful tasks like electronics and electrical troubleshooting etc

and returned back before daybreak for whatever purpose they are there for  :-//

 :D
 

Offline eri0o

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I noticed Guide Infrared has a banner written "Open Source Open Minded" in their website (https://www.guideir.com/Public/Home/images/product/banner.jpg) , but I can't find any source code anywhere. Does someone have a source code at hand?
 

Offline blueskull

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I noticed Guide Infrared has a banner written "Open Source Open Minded" in their website (https://www.guideir.com/Public/Home/images/product/banner.jpg) , but I can't find any source code anywhere. Does someone have a source code at hand?

Their Chinese page says they are building an open platform and they look forward to collaborate.

So presumably they are only open to their partners?

Be aware that IR technology was a highly controlled technology, so there could be zero openness even to partners in the past.
 


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