Dahua Thermal Temperature Monitoring System Tested

By: Ethan Ace and John Honovich, Published on May 11, 2020

Dahua's thermal temperature monitoring system has gained mass attention as a fever detection solution for organizations around the world, including Amazon.

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As such, it certainly works, at some level, but how well does it work to detect fevers (or as they market it 'elevated skin temperature detection')? And what does Dahua do to estimate human temperatures?

We bought and tested the Dahua system. Inside this report, we explain:

  • Dahua's 'confidential' 'compensation algorithm' and the practical impact of this controversial technique
  • How Dahua delivers such 'accurate' readings even under bad conditions
  • How Dahua misses 'elevated skin temperature' detections
  • How software setup impacts performance and measurements
  • How Dahua's engineering recommendations conflict with Dahua's sales and marketing

*******

*********

*** ******* ** *****’* system ***** **** ** produced ********** “******” ***** body *********** ********, **** with **** ** **** conditions **** ********** (****, masks, *****, *****, ***** walking, *** **** ******* headshots). **** ******* * feeling ** ******* *** safety **** *** **********. Moreover, ***** ***** *** be ****** ** *** water ******* ** ********* at ***°*, *** *******.

****** ******

** *** ***** ****, our ******* ***** ***** regularly ****** ******** **** temperatures ** *** - 102, ******* * ******* risk ***** *** ****** missing **** ****** **** fevers, ********** **** ******** were ******, ******* ****, or ****** **** ** others.

************ *********

********, *** ******* ******** that *** ********** ****** temperature ******** ***** ******** are ************ ******** ** what ***** ********* ** us ** * ‘************ algorithm’ **** ** ***** dynamically ********* *** ****** to ********* *** / bad ***** **** **** normal *********** ********.

Missed ******** ************

*** ******* ***** **** Dahua ********* ****** ******** with ******** **** *********** in ********* ***** ** their *** *********, ****** walking *** **** **** so **** ******* **** and **********, *** *****, multiple ********, ***.

** ******** *****, *** subjects ******** *** *********** of *** ******** ***** a *** ***** ****** in *** *** ****° F. *** ******* *** then ******** ** *** Dahua ******, *** ******* by * ******** ** thermometer (****** *****).

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***** ****** *** ****** measures ********* ********* ****** sick ** *********** ******** people, **** ******** ** similar ** **** ************* like ***** *** ** prove ***** ******* *** alarm. *** ******** ******** by *********** *** ****** temperatures ** ********* ***** levels *** ********* *****.

*** *********** ** ************ in **** (*) ** heated *** ****** ******** and (*) ** *** Dahua ******* *** ******* before ** *** *** IR *** *** ** the *********** *** ******* between ***** *** *** IR ***'* ***********, *** subject ****, *********, **** slightly.

** *** ***** *****, we **** ******** ** subjects **** ****** ***** missed, *** ** ****, ski *****, ****, *** simply *** ******** ** the ***** ******.

** *** ***** *******, after ******* *** ******** with * *** ***** bottle, *** ***** ****** measures *** ******* ** 99.6°F, ***** ** ** measured *** *********** ** 100.6°F, * **** ****** difference.

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******** ********* *** ****** through *** *****, *** subject ** ******** ** 99.9°F ** *****, *** again ***.*°* ***** ** IR ***********, **** *** camera's ***** *********.

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******* * *** *** sunglasses, ** ***** ** Dahua *********, *** ******* is ******** ** ***** at * *** ** 100°F (***** *** ******'* alarm *********), *** * much ****** ***°* ***** the ** ***********.

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*********, ******* * **** hat/beanie, *** ******* *** measured ** **.*°*, *** 101.5°F **** *******.

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***** **** ****** ** detect ******** ************ **** wearing *** *****/**********. *******, the ******* ***** *** measured ** *** ***** camera ** **.*°* ***** covering *** ********, ***** increases ** ***.*°* **** removed.

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*******, ****** ****** **** covering *** ******** ********* proper *********** ** ******** temperatures. ** *** ******* enters *** ***** *****, Dahua ******** *** *********** at **.*°*, *** ***°* when *** **** ** pushed *****.

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Response **** ***** ** ******

***** ** *****'* ********, in ****, ** *** misses:

> *** *********** ********** while ****** ** ******

***** **** ** ****, we ****** ***** ** replicate **** *****, **** to ******** ****’* *** cause, ******** ** *** video ***** ** **** R&D *** *****.

> ******* **** **** heat *******, *** ********* elevated ***********

** ****** ****** ********* this *****, *********** ********** might ** *****, *** the ***** **** **** than * ****** **********, need ** ******** ****’* the *****

> ******** *** *** glass, ****** *** ********* elevated ***********.

********** *** ***** **** your *****, ***** ******* will ****** *** ********* material ** ******* ** detection ** ********** ***** the *** ******* ** showing.

** *** ********* ** the ****** **** ****** is ****** ** ** elevated ***********, ** *** detect ** ***** *** eye ******* **** **** elevated *********** ******* ** just ********.

"Compensating *********" ************

***** ************ **** **** a "************ *********" ** response ** *** ********* about *** *** *********** offset ****** ******* *** actual ******* *********** ** objects *** *** ******** human **** *********** **** Dahua ******** * ****. Dahua *********:

** **** ****** * lot ** *********** ***** how *** ********** **, how *** ******** *****, how ** **** ********* setup ** **** **** test ****** ** *** past ****** ** ******.

** *** *** ****** specifically ***** *** *********, this ** * ****** confidential ************ ******** ** our *******, * **** you ********** *** ** cannot ***** *** ******* details.

*** *** ***** **** this, * ******* ****** can **** *** ** the ***, ******* *** buy * ******* ****** and *** **** **** from **, **** ***** that ******* ****** ** a **** *********** ******** is *** ************ *********. That’s *** *** ***** thermal ******* *** ***** body *********** ********.

***** *** ********* ** confidential, ** **** **** to ********* *** ** acts ***** ******* ************. The ***** *** *********** reading ***** *** ** a ****, *** **** it ********* *** ****** to **** *** ******* look ****** ** '******' or ************* ******* ***** temperature.

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** **** **** ** uncover **** ******* ***** does *** **** ******** detection *** ****** ********* of ***** *** ****** human *****. ***** ****, we ****** ********** **** sources ****** *** ******** face (*.*., * *********, that ********** *** **** level ****** *** ******* face) ** ********* *** Dahua ***** ****** ******** surface ************ ** ** 'human' ************, ** ** demonstrate ** **** ***** below:

****** **** ** ********* very ****** ** **** it ********* **** ********** that *** ****** ** working ****, **** ** deceptive ******* ** ********** low / '***' ***** into ***** **** **** good. *** ******* ********* 98% ** ****** **** temperatures ******* **°* - 99° *, ** * casual ******** ** ***** like ** ** '*******'.

Examples *** ***** ****** **** ****** ***********

***** ************ ******* **** to ******** *** ******** on *** ****** ** positioning (*.*., **°*, **°*, 94°F, ***.) ***** ***** did **. **** ** consistent **** *** ******** showing **** ***** ****** bad ***** **** ****** normal ************.

*** *******, **** **** the ******* ******* *** top **** ** ***** face, ********* *** **** and ******** (*** ******* parts ** *** ****), Dahua ********* * **.*°* measurement.

*********, ** ** **** less ********* ********, *** subject ****** **** ** a **********, ******** *** measured ** ***** ** 97°F.

*******, **** ****** ******* down ** ** *** side, **** ** ***** angles, *** ****** ********* to ******* ****** ****** measurements. ** *** ******* below, *** ******* ** measured ** **.*°* **** looking ****, ********** ** 98.8° **** ******* **, just * *°* **********.

Subject *********** ************

** *** *****, ***** tended ** ******* ******** in * **** ***** temperature *****, ***** ** gun ************ ****** **** more. ** ****** **** using ** ******** ** varying ****** *** *** (ranging **** ****** ** middle ***). **** *******, 8 ** ** ******** were ******** ****** *** range ** **.*-**.*°*. *******, when ******** ***** ** IR ***********, ***** **** subjects ****** ** *.*°, from **°* ** **.*°*, a **** ******* **********.

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Moving **. ******** *********** ***********

****** *******, ******** **** frequently ******** ************* ***** when ****** **** ********, with ************ ********** ****** the ****** ******** ******** in *** *****. *** example, **** ******* ********, the ******* ***** *** measured ** **.*°*. *******, when ********* ***** *** 3-4 *******, *** *********** is ******** ** **.*°*.

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***** ******* **** **** on *** ********, **** some ******* ****** **** others **** ********* ** the *****.

Camera ************* ****** ** ********

******* ******** ** *** Dahua ******* ****** *** important *** *********** ********, including ********* *****, ***** temperature ************, *** ******* temperature. ***** ******** ****** also ** ********* ******** to ****** ******** ** human *********** *** ******* temperature ****** ********** *** day *** *********** *** be ****** ** ******* out ** *********.

** ****** ***** ******** in **** *****:

Engineering *************** ******** **** ***** *** ********* ******

*** ******* **** ******** a ******** ******* **** Dahua *********** ********** *** what ***** ***** *** markets ********, ************ ** it ***** ** ****** moving *** ******'* ***** being *******, *** ** the **** *********** ****** compared ** ************ ******* providers.

***** *****'* ********* ***** various ******** ** ******'* heads ***** *******, ***** engineering ******** ** ** using ****. *** *******,**** *****'* *******[****** ***** ******* *** ski ****, ********** *** hat *** ****** ****** after **** ****** ** out]:

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*****'* *********** **** ************** responded, "***** *** ****** area(forehead) ** ******* *** camera ********** ******’* *** a ****** *******". ** covered *** ******** ** the **** ***** ** Dahua's ********* ******. ** while ** ***** **** Dahua *********** **** ***** coverings ********** ****** ********, Dahua ********* *** *********** claimed **** *** ******* accurate ******** **** **** coverings.

********, ***** *** ******** repeatedly ****** *** ******* to ** ******** **** people ******* ** * straight **** *** ***** the *****, **** ******* in***** ********* ***** **** has ***********,***+ *****:

*******, *****'* ************ ************ and ****** '**********', ********* by ***** *********** ** IPVM, *********** *** ******** line, *** ***** *** other, ********. *******, ***** calls ***

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********, *** ************ ********* to *** ** **** indoors *** **** ******* not ***** ** ********* and ** *** * queuing ****, ** ***** above *** *****:

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*******, *******'* **** ***** *****, **** **** ** outdoors *****, ********* *****:

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********** **** *****'* ************ instructions *** ******** ** the **** *****, ** generated ******** ***** ******, as *** ******* ***** shows:

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*** ***** ****** *** read *** *********** ** the ******** ******** ****** the ******'* **** ***** was ~***°* ** * ~70°F ***.

*******

*****'* "******* *********** ********** Solution" ***** ****** *** ~$12,000-13,000 ***, *****, ******* to **** *********** *********** systems **** ********* *** Sunell **** (~$**,***-**,*** ***).

********** ****** *** ********** (online):

  • **-***-******-* ******: ~$*,*** ***
  • **-**** ********* **********: ~$*,***
  • ***-*******-***-* **-******* ***: ~$*,***

Physical ********

*** **-***-******-* ****** ** physically ******* ** ***** Dahua *******, **** *** addition ** *** ****** thermal ****/******. *** ****** contains * ***** ***** illuminator *** *******, ***** trigger ** ****-*********** ****** by *******.

*** **-**** ********* ** similar ** ****** ** our *****, **** ** Hikvision *** ******, ***** 4" ****** ** *" long, *** ********** **** 30°C ** **°* (**° - ***°*), ****** ******** to **° (**°*).

** ****** *** ************ of *** ****** *** blackbody ** **** *****:

Live ********** *********** ******

*** ******** ***** ** view *********** ****** **** the ***** ****** ** using *** ***** ********* of ***** *** (***-*******-***-*), which ******** ****** ***** with ********** ** *********** measurements ***** (************ *****). The ******/*** *** ********* or *****'* ***** *** client ** *** ******* these ******, **** *** face ******** *** ******* red *** **** ********** of ** ****-*********** *****. This ***** ********** **** difficult ** ************ ********** only ******* ** ***** levels *** *** ** two ****** ** *** tests, ***** ***** ** easily ****** ** ******* only * **** ******.

***** ****** *** ********** to*****'* *** ******* ***, *** **** ******** an ********** *******, ****** their ***** *** *** client.

ONVIF **********

** ******** ** ********** methods *****, *** **-***-******-* is ***** ******* * and * ********** *** visible *** ******* ******* integrated ** ********, *****, Genetec, *********, *** ******* Optix ***** ** *** tests **** ** ******. However, **** ********* ********** temperature ******, *** *****-** ******.

**********

*****'* ********** ****** *********** readings ** * ***** job ** ****** ****** peace ** **** *** our ******* ***** **** it ***** **** * significant **** ** ******* real ******. *** ***** who **** *** *********** of ******** ****** ** wear ******** **** **** and **** ** ***** as **** ****, ******* prioritizing ***** *********, ***** excels.

Comments (78)

* **** ** ***** our **** *** ******* hard **** *** **** 10 **** ** *** this **** *********. * also **** ** ********* Dahua’s *********** **** *** repeatedly ******** ******** *** input. ** ** ******* in *** ****, ** found * ***** ********** between **** *** *********** team *********** *** **** the ***** *** ********* team ** *******.

**** ** * ********** topic ** ** ** arguably *** ******* ******* industry ******* *** **** the **** ************* ****. Regardless ** ***’* ******** on ****, * *** you ** ** ********** in *** ********.

*** ***** *** *** selling *****’* *******, ** you **** ********** ** our ****, **** ** welcome. ** **********, ** you ******* *** *********** is ****** ** ** missed ***** **** *********, please **** **** ** the ******** *** ** are ***** ** ****** each ***. ** *** this ********* *** ** also ****** *** ********* one (******* ** ********) so ** ********* **** to ** **** *******, comparative *******, **** ******** testing (*.*., ** ** ever **** **** ** PA ** *** **** how ****** **** ******* these *******, ***).

**** **** ** ***** work, *** ** ******** sorely *** ******** ******. Who **** ** ***** anything **** ****? ******....

***** *****

** *** ** *** work **** * *********** aspect **** ******. *** we ****** *** * camera *** **** ** we ***** ** ***** need ** ** ****** in * ******** ** a ***** ***** ******** are ****** **.

** ** * ******* study *** **** * lot ** ******* *** money ****** ****** * camera. **** **** * nice **** ***** ***** potential, * ***** *** again ******* ******** ** a ******* ***** *** this *** *** ** be **** *** ** any *******.

****** **** ** *** if *** **** ** see *** * ***** like **** ***** ****.

******* ****** *********** ****** - ***** ******** ***********

**'** *** ***** ******* selling **** ******* *** every ******** *** **** extremely *********! ** **** have *** ***** ** demo ** *** ******** for ***** ********* *** everyone **** *** ***** it *** ***** **. No ********** ****!

*******, ******! *** **** fevers *** ** ***** alerts ********* **** **** had?

...********...

** ****,

*** ******** * *** from * ***** ******* is **** **** ****** the ***** ****** ** test ** * ******** which ******** **-** ***** patients ** ** *******.

**** *** ******* **** is **** ,**** ******* people **** ****** *********** the ******* ***** *******.

*** ** *** ****** showed ******** **** ***** to ** ****** *********** and **** *** ********** to ** ************.

** ****** ******** *** normal **** ** ******* and ****** **** ** not *********.

***** ******* **** ******* ,now ** ***** *****.

***** *** ********* ** "extremely *********" ** **** understood *** ******* *** falsifying *** ********?

**** ******* *** *** the **** *****; "***** selling ******* *** ***** customer *** **** ********* satisfied"

** **** ** *** this ******** ******* *** conclusion ***** ***** *** generous...

** *******, ***** ******** use ** ********* ***** alters *********** ******** **** it ******* * ****, and ** **** ********** inaccurate, ****: **********?

** *******, ***** ******** use ** ********* ***** alters *********** ******** **** it ******* * ****, and ** **** ********** inaccurate, ****: **********?

**** **** * **** seen ** *** ***** all ** ***** ******* camera ***** ******* *** pretty **********, *** **** or ***. **** **** be **** ************* ** this ****** ** **** Dahua ******* ** ** skewing *** ******* ** make ************ ******** ** ***** software **** * **** is ********.

**** ******* ******** ***** testing / ************* ** the **** ****. *** this ** ***** *** greatest ******* ** *** time.

***** ******* ** ** skewing *** ******* ** make ** ****** **** accurate ** ***** ******** when * **** ** detected.

*****'* ************ *** **** IR **** ** **** as **** (*** ********* face, *** ******* *** offset ** '*****' ****). As ** ********* ** the ******, ** *** find **** ** *** Extech ***** *** * much ******* ***** **** Dahua ***.

**** ***********, ************, ***** thermal '*****' ******* **** FDA ******** *** ******** thermography (*.*., ******* *** actual *********** ************), *** estimating ***** ** *** thermal ***** (*.*., *** read ** *** *** we ***** **'* * human ** ***'* ***** it ** *** ****** almost *** ****** ***).

#*****

***** ** ******** ** that **% ** ****** don't **** * *****, so *** ********* **** subjects ** "******" *********** will ** ****** ******* in *** **** ******** of *****.

*******, ***** ** *********** ******** *****, *** ****** *** unreliable ** *** ***** in ********* *** ***** number ** ****** *** may **** * *****, whether ******** ****** ** obscured.

*’* **** **** **** all ** ***** ** the **** ******** *******, once *****’* *** *****’* facial ******** *** *********** baked **** *** ********** releases :)

** *******, ***** ******** use ** ********* ***** alters *********** ******** **** it ******* * ****, and ** **** ********** inaccurate, ****: **********?

**, **'* **** ** :)

*****. ** ** ******** Inaccurate.

******* ***** **** *** have ******** *********

**** *********, *** ****** done * **** *** at ******** *********?

**** *********, *** ****** done * **** *** at ******** *********?

*********'* ****** **** ************* imaging (* *******) ** generate * ** ***** of *** **** ** verify ** ** *** a **** *******. ** have *** ** *** the ****** ****, **** sales *******. "********" ** this **** ***** **** it ***** ** ******** by * ******/**** ** some ****.

***** **** ** ***** be ******** ** * statue/bust ** **** ****.

****** ******+

****** ****** ******, ** usual! ******* ******* ** seeing ** ****** ******** does * ***** *** in **** *****!

*** ***** * ******** exertion **** ****, ***** a ****** *********, *****-** heat ** * ****** way ** ***** **** and **** *** ******** in ***** ** *** thermal ******?

*** ***** *** ********* where *** ****** ******** reported *** ******** **** temperature *********?

** **** **** **** testing **** ******** ********, mostly ******* **** ****** the ********, *** ** has ***** ********* * temperature *****. *** ***** to **** ** **** as ****** *** ********** exerting ********** ** **** they **** ** ********, which ******* ** **** being ******** ***** **** they ********* ***** **.

*** ****** ******** ******** skin *********** ** ******* occasions (***.*°* *** **) while ** **** ******* the ********* ** *** report. ** *** **** frequent **** ******** *********** was >***°*, ****** **** more ****** ****** ** the *********.

* **** *** ***** to *** ****** ** Ethan ******* **** ****** the **** ********.

"************ *********

********, *** ******* ******** that *** ********** ****** temperature ******** ***** ******** are ************ ******** ** what ***** ********* ** us ** * ‘************ algorithm’ **** ** ***** dynamically ********* *** ****** to ********* *** / bad ***** **** **** normal *********** ********."

***?!?!?!?!?!?!?

* ***** ***** ** none "************ *********" ** sense ** ********* ** review. **** ****** **** fact **** ***** ** which **** ******* * face *** *** ********* emissivity **** ****. ** if *** ******* ****** paper **** ********** ***** 0.7 *** ****** ***** it **** **** ********** at ***** *.** **** result ** **** *********.

****: ********* * ***** you *** ******* ********** to ******* *********** **** real *******, *** * see *** *** ********* two *********** *******. ** is **** **** *********** when ********* ***** *** contactless ******* ***** *** different ********** ***** (** will *** ** **** in *******, ********* ** range *.**-*.**) *** ******** almost ******* ********** ******* which ** ***** ** around *.*. *** ****** I ******* ********* ** same:

** **, *** *** in **** **** ***** contactless ************ *********** **** which ** *********** *** linearization. * *** ** into ********* *** ********** that ***** ****** ***** emissivity *** ** *.** (correct!) *** ***** ************* multiplication ~*.* + **** factor ~***. ****** **** artificial ******* *********, **** simple ****** *********** *** linearization.Do *** ****** **** all ****** *** ***** 4 *********! ******-******** ******** for ******** ****** ******* on ********** (********) *** on ******** *********** (****** non-lineary). * ******* *** to ****** **** **** but ** ****** **** glue **** ******** **** emissivity ******* ** ***** skin. ** ** *********** very **** ******* ***** of ******* **** *** skin, *** ****** ** ok *** ******* *********.

**** *** *** ****** provide ** **** **** data ** **** "************ algorithm"? **** * *** recalculate *** ******* **** in .*** ** ******* show *** **** ***** is ******** ******* ********** on ***** ************.

******* ** **********, *** concern ** ****** ** simply *** ************ ***** attempts ** "*********" ************ when ** **** * face. ** ***** ** a ***** **** ** a ***** ****, ******* are ******* ** **** the ****** ******** ** present * **** *********** close ** ******* **** it ** *** *** case. ** ******** *** very ******* ******* **** using ****** ** ******* results ** ***** *********, as ****. ******* ******** outside ** * **** day ** ** ***** of *** ********* *** show****************** ** ~**-**°* ******** on ***** ****, *** be ***** ** *** camera ** **-**°*, **** similar ** *** ***** Rob ****. ********** **** body *********** **** **° skin *********** ** ******* to *** *** **** variables ** ** **** more **** * *****.

********* **********: ***** ****** significantly. ** **** ***** bond *****, ******* ****** inkjet *****, ***** ******* sources *'** **** **** as ****** ********** ******* 0.9-9.95, **. *.**-*.** *** human ****, ** *** terribly *********. ***** ****** vary **** *.*-*.* **** what *'** ****, *** this ** *****.

*******, **'* ***** ********** that ** ************ **** to ***** *********** *** they *** *** ****** to *** **** ******.

*******, ** ********* ** Ethan's ********, *** ******* is *** *** ****** varies. ** *** ****** was *** **** ** every ***********, **** ***** not ** * *******. And **** ** *** emissivity *** *****, ******* a ****** ** * lot, *** ********** ***** be *** **** ****** temperatures ********, ** ***** not ******** ** ** got ****** ** '******' human **** ***********.

**** ***** ** **** own ***** ** **** Dahua ****** **** ***** "blackbody" ***** ** ***** - ** ** *********** stabilized ***** *** +/-*,***** with ******* ********** ***** which ** ******** ** range ***** **-******. ******** simply *** **** ** on ***** ******** *** freely **** ** ********* area, ** ** ******* powered.

*** ****** ******** ******** if ** *** **** piece **** ******* ***** 37,5C (**,* *) *** does *** ** ** are ****** ********* *****. This ********* ***** ** to ***** ** **** as ******** ******* ****** behavior. *** ******* ** small ****** ** ********** mitigate ** ******* **** any ********** "********". ******** thermal **** ** ****** cannot ********* ** ** have **** ***** ** head, ** ** ***** 5x3cm **** *** ** thermal ***** ** *********** none ****. *** **** you ****, **** ** is ***** *********, ** not ****** **** **** tech. ** ***** ** exactly *** ****** ** prove *** ********* **** the ****** ** ***** his *** *** *********.

**** ***** ******* - yes, ** *** *** be ******* *** ******* any ********** ************, *** without *** *********** ****** (like *.*. ********** ********* to **** *** ******** tests) . ** ******* from *********** * ***** to ******* ****, ******* graphics ***** "************ *********" looks ********. ******* **** I *** ***** **** which *** ****** ****** "working *****" ***** ** about **-*** (**,* - 100,4F) *** **** ****** to **** *****. * still ***** ***** ** nothing **** "*********", **** it ***** ** **** we *** * *** more *** **** ******* point.

**** ******* ****** ***** important **** *** ***** is ****** ** ***** which **** ** ** calibrated ** ***** ****** and ***** ****** ********** difference *** **** *********** role. ***** ********** *** know-how *** **** ********** equation, *** **** ** about *** **** *** nonlinear ****** ******** ** correct ******. ** * believe **** ** *** repeat "****** **** ****" you **** *** **** what ******** ***** **** AI *** ** *****, liner *****, *********** *** etc.

**, ***** ** *** there **** ****** ***** f.e. ******** **** **** non-sense ******* *** ***** it ** **** *********** rules. ***, *** ** still ******** (*** ** is ******** ** ****). However *** **** ***** did *** ******* **** this *** **** *** negative ****** ** **** functionality.

****** "************ *********" ****** me - ******* *** be ***** **** ****** sensor ***** ** ******** results! ******* **** **** strong ************ ** ***** it. ** **** ******** measurements ** ****** **** are *********.

**** ***** ** **** own ***** ** **** Dahua ****** **** ***** "blackbody" ***** ** ***** - ** ** *********** stabilized ***** *** +/-*,***** with ******* ********** ***** which ** ******** ** range ***** **-******. ******** simply *** **** ** on ***** ******** *** freely **** ** ********* area, ** ** ******* powered.

*******, ****! *** *** send * ******* ** what **** ***** ****? My ***** ******* ** it ***** ********* **** this:

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** ***:

*** **** *** **** what ******** ***** **** AI *** ** *****, liner *****, *********** *** etc.

**** ** **** **** on ******** ******* ** that ****** ** ******** tend ** ** **** seeking, *.*., ***** ******* tend ** **** ***** lower **** ******* (*.*. 37°C) *** ****** *** ones ****** **** ******* go *****.

*** :-) **** ** need ***** - *** is ***** ****** *** second ** ******/******. ********* and ********* ***** ******** in ****.

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******* *** "**** *******" by ***** *** ** at ***** ******. **** I ******* ** ****** is: ******** *********** ***** made ** ***** ******* contactless ****** ** *********; not ****** ****** **** objects ** ***** ***** 37C.

***** **** *** *******. We **** * ****** of ********* **** ******** looking **** **** *** we ***'* **** ** make **** * ****** pig. **** **** ** have *****, *** ***** Imaging ****** ***** ** be *** **** ******** in ******** **********. ** need ****, ******** ********** and ***** ******* ** the **** ***** **** a ********* ** *** best ****** ** ***. Of ****** **** ***** at * *********** ****.

**** **** **** ** substantial **** *** ** talking *****? *** **** better ** *****'* ********?

* **** **** ** well ** ***** ********* video ****** ***** * 1-2 ****** **** ********* the **** *****. *** for ****** *** ** were ********* **** ******** and *****. ********* **** I ******* ***** ******* is ** *** *******.

**** *********** ****, * find *** ******** ** a ************ ********* ************ interesting.

** **** ******* *** walking ******** ** ** the ****** ** **** within **, ** ***** this **** **** ********** readings.

*** ** *** *** the ****** ** ** angle ** *** ******* never **** ****** ** it ***** ****.

** **** ***** *** the ******** *** **** seen **** *** ************* setup.

*** ** *** *** see *** ***** ** missed **** *********** ******** you ***.

** **** ***** *** further ******* ** **** is * ****** ********.

******** **** ********* ******* screening - **** ****** know **** ******* **** are *****?

*** *** ***** * notice **** *** **** testing ** **** *** blackbody ********* *** **** precise. * *** **** from ***** (*** **** instructions **** **** **** me) **** *** *** should ** ***** ****** the **** ****** *** no ***** ****** ** touching *** ****** *****. I **** **** *** blackbody ** **** **** this ****** *** .* C ********. **** ***** said, ** ** *******? No. *** ** ** tricked? ***. ** **** been ******* ** ** honest ** ******** ****** it ** * ***** line ******* ********* ****, and **** ******* ********* should ** *** ** place ** ** ***** is *********.

* **** **** *** blackbody ** **** **** this ****** *** .* C ********.

** **** ***** * think ** ** ****** clear **** *** **** is *** ******** ** all. *** ***** ***** whether ** ** *** blackbody, ** *** ************ algorithm, **** ***** ** the*****************. *** *** **** itself ** *** * reliable ****** ** *********** readings, ***.

******* ****** *** *** triggered ************ **** ** matters ***** **** ********* are **** ** **** world ** * ***** sense ** ********. ********* to *** **** ******* this ** ** ******* is *** * ***** first **** ** ******* at ***.

*** ********* ********* ****** doesn't **** ***** ** some ** *** ******.*** attached ***** ** *** I **** **** ******* it **.

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*** ** **** ******* Color ****** *** *** default ******** ? *** does *** ********* ************ change *** ** *** results ?**** **** ** the ******* ** *** firmware **** ** *** camera?

*** ** *** ***** were ******** **** *****'* engineering **** ***** ** publication *** **** *** not ******** *** ********* setup. ** **** ** a **** ******* **** them *** **** ** hour, ** ****. ************, in *** ******* *****, we **** ************ **** by ***** **** *** box ********** ** ** ***** to *** ****** ** the *********, ******* * questioned **.

** *** ** ************, we ******* ** ** make ** ****** ** visualize *** *****. ** did ** ***** ** a **** **** *****, actually. ** **** *** change *********** ***********, **** display.

******** **: **.***.*******.**.*, ***** Date: ****-**-**, ***** *** the ****** **** ** us ** *****.

**** ** ****.****** *** the ****** *****.

**** ***** ********...

**** *** **** *** hat *** **** ****** in *** **** ******* and ***** ******** * seconds ***** ** **** 4 ****-***-**-** ****** *** in ***.

****** *** ******* ****. I'm ******** **'* *************, but **** ****** ******** shows * **** *********** alarm ** *** ****** subject. **'* **** ** see, *** *** *** make *** *** *** overlay ***** ********* ****-***********.

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**'* *** ***** ** see ***** ** *** detecting, *** ** *** tests ******* ** **** door, ** ******** *** pavement ****** *** ******* as **** ** *** "face" *** ********* ** alarm (*** *** **** out *** ****** ** the ***** ** *** head *****):

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** * ******** / Integrator, * **** ***** state ** ************ / disappointment **** *** ******* any ******* ***** **** MSRP ** ***. ***** you ***** ****** ** subscribe, *** *** ***'** providing ******* ** **** Facebook ********? * *** one **** **** *** should **** ** ******* what *** *********** ***********. Online ******** ******* ** not *******. ***** ******* do *** ******* *** or **** ********* *** all **** **** ** do ** **** ** the ******** ******* ********. Integrators **** **** ** provide * ***** ***** service ****** **** * customer **** ** *** web. *** **** ******* indicated *** ***** ******** are *** ** *** DIY ******** *** ************ knows ***** ** *** these *** **** **** cost. **** *** ***** should ** ******** ** contact * ******* ********** to **** **** ********** and ******* *** ******* process ** ******* / maintain.

******* *** **** * product ** *** *** no ******* ** ****. If *** ***** *** product ** *** ******* up ** **** ************, that's ****. ******** ** do **** ************* *********. I ********** **** ******** and ************. ********* * disagree **** **** ******** but ****'* **** *** are **** ** **.

*** ******* ***** **** publication's *****, **** ***** the ***** ** **** Real ***********?

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*** ****** *** *********

*******

*****'* "******* *********** ********** Solution" ***** ****** *** ~$12,000-13,000 ***, *****, ******* to **** *********** *********** systems **** ********* *** Sunell **** (~$**,***-**,*** ***).

********** ****** *** ********** (online):

  • **-***-******-* ******: ~$*,*** ***
  • **-**** ********* **********: ~$*,***
  • ***-*******-***-* **-******* ***: ~$*,***

*'* *** **** ***** your *********** ***** **** here...

** **** ******* ** available ****** (******* ****** the ******* ** ***), this *********** ****** *** be ********** ** ****?

*** **** * **********. please ******* **** ********.

****, *** ******** **** Dahua ****** ** *******, saying: "**** ***'* **** to **** ****, **** don't **** ** ****, they ***'* **** ** look ** *** ******,"******** *****:

** ***** * ***** series ** ****** **** the ****** *** *** promoting *** **** ********* is **** ** ********* the ***** ** ****?

******* *** **** * product ** *** *** no ******* ** ****.

**** *******:*** **** ****** **** At ****** ****** **** Axis ****. ***** *** **** argue ** ***'* "****" Axis ******.

** **** *** **** a *** **** ** Dahua ******* ***** *** but **'* ********* ******* to *** *****. *** example,*** ********** **** ******* up**** ***** ********** ******** is ******* ***** ***** at $**,*** ******:

**** *** ****, *** county *** **** * heavy *******: ********’* *****, at ******* $**,*** * scanner, **** *** **** than ******* ******* **** by *********** *********** — including *** ******** ******,**** *******, ***** ******** ***** from $*,*** ** $**,***.

* ***** ** ********** nearly ********* ** **** RedSpeed **** ******** *** be ****** ****** *** roughly **** ** ********’* $30,000-a-system ***** ****. *** the ******** ******** ******** its ****** ** ********** to ***** ******** *** sold ** * **** cost, ****** *** ******* had ***** ******* ** deliver *** ******* *** systems ** * **** of **** ******.

**** *** ***** ****** be ******** ** ******* a ******* ********** ** help **** ********** *** provide *** ******* ******* to ******* / ********.

*** **** ******** **** for * ***.

******. ********* ********* ******* to *** ****** ** not ** ****'* **** interest.

********* ******* ** ******** available.

****'* *** ****?

***** ***, * *** the ***** ** ***********. However, ****** *** ****** pricing ******.

*** *** ***** * took **** *** ** this ** **** * system **** ************ ******* has * **** ******. That ** ******** *********** for **, ** *********, and ****** **** ******* the ******. ***** ****** with ******* *** *****.

**** ** ** ******* of ************* ** **** *******:

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** ****** ** ** do * '***** *****' using * ****** ***** account *** **** *********** showed *** ~$*** *****. If *** *** **** to **** **** *** $30k ** ********, ****, but **'* ****** **** to **** **** ** this ***** ***** ******.

****** ***** ******** ** an ********** ***** ****** so ** *** *** allowed ** ********* ******** below ***. ****** ***** online *-******* *** ***** to ** ********** *******, we ******** ****** ** all *************' ******* ********** price *****. *** "***** login *** ****** *****" is ** **** *** for ******** ** **** our *********** ***** ****** without ********* ***.

***** * **** ** say **** ***** ****** a **** ***** ***** the ****** ************* ** street *****, * ** agree **** **** ** the ***** **** ** pricing ** ******* ******, then **** ******* ****** be ** *** ******. After ***, **** ****** expect ** *** ** the ****** ***** ** the ********; *** *** full **** ** ******** close ** **.

** ****** ** *** dealer's *** ************'* ************** to ***** *** ********** of ****** **** ** authorized ******: ******* *** full ******** *** **** support **** *** ************, etc.

**** **** * ********** there *******’* ** ********** about *** ****** *****,****** you *** ******** ** making **** **** ***% margin ** * ********/**********.

** *** ****** **** thermal ******* *** *** medical *******, *** **** should *** ** ******* like ***.

** ****** *** ** use **** ** ***** estimators ** **** **** in **** ******* ********* areas *** **** ***** 38 ** ********** **** fever ** ****** ******** accuracy ** ***** ******** cost, ***** ** *** fact **** ** ** normal ****** *********** **** a ********* ** +/-*.* degrees ******* *** ********** temp ** ***** ** 38 *******. ** *** accuracy ** ** ****** is *.* ******* *** bellow *** **** ** how ** ** **.

** ** ******** *****, I ******** *** ************* accuracy *** ** ********* based ** *********** *********. Until ** *** **** a ***** ** *** only ***** *** ******'* performance ** **** **** did.

*&* ********** *** ******* Solutions ****** ** ********

**** ****! ********* *** balanced ******. ** *** want * ***** *** easy ***** ** ****** COVID ****** ** *******, office *********, *** **********. Thermal ******* *** ***** monitoring ***** **** ** they *** ********** ********* and ******** **** *********.

***** *** **** ******** related ** *******. ***** considerations ****** ***** ***** for **** *** *******.

  1. *** *** *** ******** a ********* ** **** that ******* **** *** fever ********* ****** **** FDA ********. *** ******* is *** ********* *********. The *** ** *** currently ********* *** ******** but ******** *** ***** to ******* ***** *** crisis ** ****.
    1. ** * ****** ******* $25,000 ** **** *****, is **** ***** ****** if *** ***** ***'* meet *** ************?
  2. ** * ******* ** noted **** * ****** temperature, * ******** ***** is ********* *** ********* screening.
  3. ** **** ***** **** HIPAA ********** **** **** play?
    1. ******** **** * ***** to *******, ** ** students. ** ***** ** issue ****** *** ****** phase ** ** *** secondary ********* *****?
    2. *** **** *********** *** to ****** ***** ** at *** ********* *********, but **** ***** * kid *** ** ****** out ** **** *** to * ***** ********? Students **** ** ** taught **** ******* ***** pulled *** ** *** lined **** *** **** that **** *** *****-** positive. ******** *** ****** an ***** ****.
    3. ** * ****** ********** a ******* **** * bus ** ****** * high ****, **** *** whole *** **** ***** the ******* ********* *** secondary *********? ** **** student ***** ******** *** the *****, **** *** entire *** ** ** quarantine?
  4. **** **% ** ***** carriers ***** ************, ** fever ********* **********? ***** a ****** ** ****** served ** ****** ****** buses ** ****** **** a ******** ****? ***** the **** **** (***** it **** ********* *** problem) ** ** *** a **** ** ********* 20% ** *** ******* population ***** ***?

* ***** ***** ** security, ** *** ********.

***** ****** ****** ("*******" subjects *** ****** **** been "******") *** *** most ********* **** ** error ** *** ******** situation ******* **** ******* a ***** ** ******** where **** ******** ******.

** **** ****** (** any ******) *****-****** ****** who ******* ****** **** been ******* *** ********* screening, ***** ********** ********** & ***** ** *** system's *** ********, **** it ** ** ****** than ** ***** ****** which ******* ***** ******* when ** **** **** are ********** ****.

***** ******* (******** ****** who *** *** ******** over-temp, ** ****-**** *** not ***) ***** ** annoying *** ********** ** a ******** *********, ********** in * *******-********* ******** where **** ** *** "first *****." ******** ********* systems **** ** ** biased ** ****-****** ** the ***** ***** ** provide * ****-**** *********** at *** **** ** having ** ** **** secondary **********.

******** ***** ******* ** the ***** ********* ***** renders *** ****** ******* unreliable *** *********** * waste ** ****, ******* people ******* *** ***** screening ***'* *** ********* to *** ******.

***** *** *** **** deep *** ********** ****. Ultimately, *'** ******* * can **** ******* *** walk ***** **.

** ***** **** ******* testing ********* ************* ***** some ********* **** ********** and ******.

***** ** *** *****, drawing *** ********* ****** box ** ******* ********* ways ******* ** ********* similar ************. *** ******* below *** ******** ** 98.1-98.3°F ******* ******* *** scene (***** *** ********** queue ***** ***** **********, then ******* *** ** the ***** ** *** blackbody) ****** ******* ********* attempts.

********* ****** ***** ***** on *** ******:

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********* ****** ***** ****** the *******:

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********* ****** ***** ******:

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********* ******* *** ** alignment, ****** *** ** the ******:

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** ********, * ***** have ******** ************ ** be ****** ** **** last *******, *** **** remained ****** ** *** same ***** ** ***** setups.

** **** **** **** to *** * *** water ****** ** ****** elevated ******** ***********, ******* to *** **** *****, with *** ******* ****** at **.*° ** *** camera, *** ** ***.*°* on ** ** ***********:

** ******* **** ** will ****** ******** ***** longer **** *** **** when ****** **** ****** to *** ******. *** maybe ** ******* ** firmware *******?

* ****** **** *** results ***** ** **** no ********* ?

* ****** *** ****** will **** ***** **** report? **** **** ***** $10 ******* *** *** Dahua ******* ********.....

*********: ****** ***** ** Chinese **** ** *.*. blacklist ** **** ******* camera ***** - *******

********* ** *****!

** **** **** *** current ******* ******** ****** the *****, * *** of ************ *** ******** around *** ***** **** been ****** ** ****** some **** ** ***** defense ******* *** ****** within ***** ******* ******.

****** ***** ****** ***** based **** ************ *** 1 **** ** ********** thermal ****** ** ***** product **** *****! * am **** ****** **% used ***-**** ***** ***-*** thermal *******.

**** *********** **** ********* have ******** **** *** are ********* ****** ***** deploying **** ******* **********. Some ************** ***** **** just ****** ** **** extra ***** (**** ***** actually) ** **** ****** of ****.

**** ********* *********** *********** based ** *** ***** here ****** ** **** AVAILABLE ** *** *****. Especially ** ***** *** already *********. **** **** a ***** ** **** what **** ****** ** actually ****** ***** *********** in **** ** *** risk ** ********** ** * ******* case ** ****** ******* thru **** ****** ******** temp.

***** *** *** **** information. **'** **** ********** researching ********* ** ***** our ******** **** *** this ** **** *******. I ** ******* ** you **** *** ******** on *** ******** **** cameras **** **** ***** the **** **********? ************, with *** **** ** elevated **** ******* ***** produced ** **** **** able ** ****** * OEM/ *** *****. * know **/****** *** ** OEM ******* *** *'* sure ****** *** ** well.

***** *** ******** **** NDAA ********** ** **** important ** **, ******* its * ***** ***** application ** ***.

****** *****,

* ** ******* ** you **** *** ******** on *** ******** **** cameras **** **** ***** the **** **********?

***** (*****, *********) *** clearly ******* ******* *** therefore **** ***** *** same *** ***.

**** ******** ******* ** the ***-*******-***-* *** *******?

***** *** *** ****** the **** ** ** this ******. * **** been ******** * ************ amount ** **** ******* with ************ ******** **** themselves ** **** ******* fever ********* *******. ** is ******* ***** ** money ** ** **** selling ******* ******* ** these ********* *****; ******* to ** ** **** the ******* **** **** accurately ****** ****** **** elevated **** ************ ** dishonest. * ********** *** effort **** **** **** researching *** ************* ** this ******, ***** ***** to ** *** *** that ** ***** ******** most *** **** ************.

** *** ***** *****, and *********** ********, * believe ** ** * foolish ********** *** **** end ***** **** **** to ******* ** ****** for *****-** ******** ******.

"The ******* *** **** ******** ** *** ***** ******, *** ******* ** * ******** ** *********** (****** *****)."

** *** ***** *** calibration ** *****?

** ***, *** *****?

*** **** ** *** use ** *********?

****** *******, **'** **** checking *** ****** *********. I ***'* **** *** how *****, *******. ** varies, *** **'* **** multiple ***** *** ***. We've **** ***** **** for *** ***** ******** now, ** ** **** what ** *** **** to *******, ** ** are ******** *** ******** when ****** **** ** all ***.

**** ** ***'* **** just *** *****, ** have ****. ** **** have **** ***** ** thermometers, ***** ******** ******** thermometers, * ******** ****** scanner, *** ** **** thermometer, **** **** ** order. ** ** **** a ****** **** **** when ****** *** ********.

** *** ***** *** calibration ** *****? ** Yes, *** *****? *** what ** *** *** to *********?

...*** ********* ***** ********...

** @***, **** *** test ** ******* ***?

***** **** .

* **** * *** of **** ** *** office *** **** ***** aspect *** *** ********* the *********** *** **** precise **** ** *** work ******** ** *** camera

* **** ** ******** for **** **** **** manufacturers *** **** **** need * ***** **** for **** ************ *** some ********* ***** **** for ******** ******* **** investing ** ***** **** help? *** *** *** black **** ********** **** similar ***** ****** ******** without ***** **** *** competitor **** ***** **** is *********

** ** ******* ** Dahua *** *********'* ******* dispute ***** *********** (***** pro *********, ********* ****, or ** ***** ********* it ***** '********'), *** testing ***** **** ***** is ******* ** **** point. ****** ******** ********* *** without ***** * ********* in *** **** *******.

**** ****

***** *** ** ***** , ** ***** * possibility ** *** ****** an ***** ** ***** comparison ** ***** *** hik ****** * **** side ** **** ********** in *** **** ******

**** *** **, **** the **** - *** Hikvision ** * ****** inches ****** *******, **** more ** *** ***** whip:

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*** **** *** ***** - **** ********** ** the ***** ***** **** on *** ***** ***** can ** ******* ** alarm:

IPVM Image

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