World IEC Fever Screening Standards Explained

By: Charles Rollet, Published on May 04, 2020

While 'fever detection' is new to most people, the technology has been practiced for many years and has a series of international standards that we explain herein.

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In particular, the world's two top international standards groups, the IEC and ISO, have published 3 standards covering fever (i.e., febrile) screening:

  • IEC 80601-2-59:2017 Medical electrical equipment — Part 2-59: Particular requirements for the basic safety and essential performance of screening thermographs for human febrile temperature screening
  • ISO/TR 13154:2017 Medical electrical equipment — Deployment, implementation and operational guidelines for identifying febrile humans using a screening thermograph
  • ISO 80601-2-56:2017 Medical electrical equipment — Part 2-56: Particular requirements for basic safety and essential performance of clinical thermometers for body temperature measurement

We purchased those 3 standards for 530 Swiss Francs (~$550 USD), studied them and prepared this guide to explain how they apply to fever sceening, including:

  • Focus Area: Inner Eye, Other Areas "Unreliable"
  • ISO Face Examples Show Importance of Inner Eye
  • Eyeglasses, Hair Shouldn't Obstruct Face
  • Impact of Obstructions Shown by ISO
  • Manufacturers Contradict Standards
  • 'Face Detection' AI and Temperature Algorithms
  • Minimum Lab Accuracy Level
  • Faces Must Be Parallel to Camera
  • Minimum Face Pixel Requirements
  • Secondary Measurement Required
  • Clinical Thermometer Requirements
  • Ambient Temperature Must Be Controlled, Ensure No One Is Sweating
  • Avoid Bright Lights, A/C Drafts, Other Heat/Cold Sources
  • Secondary Screening Area Requirements
  • Fever Cams For Use "Under Indoor Environmental Conditions"
  • Long List of Facilities Recommended
  • Ease-of-Extraction Emphasized
  • No Toilets Nearby
  • Backdrop Requirements: Non-Reflective, Avoid Dark Colors
  • People Should Be Screened One-at-a-Time
  • Data Should be Kept For One Month/GDPR Impact
  • Applicability / Legality

IEC/ISO *********

*** ************* **************** ********** (IEC), ***** ** ******, Switzerland, ** *** *****'* top ********* ************ "*** all **********, ********** *** related ************" ****** ****** *********, ********* *** **, PRC (*****), ******, *******, India, *****, ***.

*** ************* ********* ************ (ISO), **** ******-*****, ********* international ********* *** *** a ******* ******* ** products, *** *********** ****** *********,********* *** ******* ********* above.

FDA ********

**** ************* **** ********* detailed ******** ****** *** fever ********* ******* ****** solutions, *** *** *** has ******** ****, ********* in ********* ****** ***************:

[******* ***] ****** *** labeled ********** **** *** following ********: *** *****-*-**:****

[*** ******'*] ******** ********** and ** ********** **** the ********** ** ***/** 13154: ****

****, ** **** *****, we *** **** *************' recommendations, ** *** *** groups ********** ***** **** collaborate "*******" *** ********* each *****:

*** ************ ******* **** the ************* ************ *** Standardization (***) ** ********** with ********** ********** ** agreement ******* *** *** organizations [******* *****-*-**:****]

*** ************ ******* **** the ************* **************** ********** (IEC) ** *** ******* of **************** *************** [...] IEC *****-*-** ******** *************** on *** ***** ** temperature ********* ********** *** relevant *********** ************ *** responsible ************* ** ***** for ***** ******** ********* [from***/** *****:****]

Focus ** ***** ***, ***** ***** "**********"

*** *** ****** *** inner *** ** *** best **** *** **** temp ******** *** ** it ***** **** ** important ******, ******* ***** body ***** *** "**********":

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****** ************ ** ******* areas ***** **** *** region ******** ******** ** the ***** ****** ** unreliable, *** *** ** complicated ** ************, ****** skin ******* **** ********, etc. *** ******* ******** indicates **** *** ****** medially ******** ** *** inner ****** ** *** preferred **** *** ***** screening *** ** *** stability ** **** *********** site. **** ** ******* this ****** ** ******** over *** ******** ******* artery.

ISO **** ******** **** ********** ** ***** ***

*** ********** ** *** inner *** **** ** best ***** ** * real-life ******* *** ****** from ******/** *****:****. *** ****** ***** shows * *** ******* a ***** (********) **** a *** ** **.*°* on ******* ******:

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*** * ******** *****, *** **** eye ***** **.*°* *** his ***** **.*°*:

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**** ***** ******* *** readings **** * ********* of **°*, *** *****.

Eyeglasses, **** *******'* ******** ****

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*** *** **** ****** hair, **********, *** ***** objects ****** *** ** covering *******'* ****:

*********** ** *** ******** to ****** **** *** FACE ** ************ ** hair, **********, *** ***** objects ******* ***** ******** will ********* **** *** ability ** * ********* THERMOGRAPH ** ****** * febrile *********.

Impact ** ************ ***** ** ***

*** ****** ** ************ is *****. ***** ** an *** ********** ** someone ******* *******, ****** totally ********* *** ******** inner *** ****:

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**** * *** *** similar *******:

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*******, *** ****** * face **** ** **** an ***********, *** ***** to ******-****-***** ******** *** to **** ****** *********** being ********* **** **** the ****:

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*** *** ***** ** has ******** *** ******* display ***** ** *** 3 ****** ***** ** "demonstrate *** ******* ******* more *******".

Manufacturers ********** ******** ******

*******, **** ***** ******* fever ******* ** *** disclose **** ******* *** masks ******** ****** ********, along **** *** ********** the ******** ********** ** inner *** ********.

**** ****** ***** **** 'accurate' ******** *** ****** with ******* **** ******* obscure *** ***** *** area, *.*., ******* ***'* *******:

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

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** ******** ***** ********* *** **** ****** 140,000+ *****:

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*******, ***, ***** ** recommending * ******* ** winding ******* ***** ****** queue ** *** ***** faces *******, ** ***** in **** ***** **** provided ** ** ******** below:

Minimum *** ******** *****

*** ****** *** ******* laboratory ******** *** * thermal ****** ** ±*,*°* in *** **°* ** 39°C *****:

*** *********** ********** ******** of * ********* ***********, including *** *********** *********** shall ** **** **** or ***** ** ** offset ***** ** ±*,*°* over *** ***** ** at ***** **°* ** 39°C

*********, **** ** **** the ******** ****** ** most ***** *** *************, with **** (**** ******, Dahua, ****, *********) ******* ±0,3°C ********** **** ********±*,*°*.

**** ** ***** ****** to ****** **** ************ manufacturers *** ***** ** verify *** ******** ** their ******** **************.

Faces **** ** ******** ** ******

*** ****** ***** ****** be ******** ** *** camera:

*** ******** ****** ***** of *** ********* *********** shall *********** * **** that ** ********** *,** m ** *,* * above *** *****. **** requirement *** ** *** by ****** *** ******** camera. ***plane ** *** **** ** *** ******** ****** **** ****** ** ******** ** *** **** and in line with the TARGET.

*** *** **** **** if **** ** *** achieved, ****** ** "** to * °*" *** possible:

****** *** **** *** camera **** *** ********* aligned, ****** ** ** to * °* *** be **********. **** ****** usually ***** *** *********** value ********.

**** ** *** ******* that *** *** ********* a "******** ********** **********":

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**** **** ******* ** manufacturers ***** **** ************* angled *****, *.*.**** ***** *****:

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Minimum **** ***** ************

*** ****** ******* **** be ******** ** ***** to ******** *** ****** of ****** ** *** face *****, ***** ****** be * ******* *** by ***:

**** [********] *********** ** intended ** ****** **** there *** ********** ***** PIXELS ** *** ********** of *** **** *** TARGET ** ****** ** accurate **********. *** ******* display ** *** ******** TARGET ***** ***** ** 320 ***** ****** ** 240 ***** ******. ** NORMAL ***, *** ********** of *** **** ***** fill ** ***** *** IMAGE ****** ** *** IMAGE ******.

**** ** *** ************* IPVM *** ***** ******* (e.g.,******'* ***** ***) ** ******* ******* sensors, ***** ***** **** could **** ****** **** this **** ******* * single ****, *** ** or **** ** * row ** *** **+ shown ** ******'* ********* below:

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** * **** ** camera ***** ** ** 240 ****** **** *** a **** **** ** about *** ****** ****, effectively * ***-***** ****** should **** * ***** of **** ** ***** than ** ******. *******, Sunell ** **** ******* around ** ****** *** face ** ****, * fifth ** *** *** recommendation.

*** ********* ***** ** that **** ***** ****** on ****** ** ** harder ** *** ******* readings ***** *** ******** of ******** ****** *** colder ***** ** * face **** ***** **, reducing ********.

No ******* ** '**** *********' ** *** *********** ********* **********

*** ***/*** ********* **** no ******* ** **** AI ** ** ******** else ******* ******** ***** obstructions. **** **** ** an ***** ***** ************* may ***** ***** **** standards *** *** ** date.

**** ************* **** **** touted "************ **********" **** claim ************* ****** *** the (****-*****) ********** ******* face **** *********** *** actual **** ***********. *******, the *** ********** **** this "***** **********" ******* inner *** **** *** body **** ** ********* for ** ********* *** "threshold ***********", *.*. *** specific *********** ** ***** the ****** ******:

*** ********* *********** ******** the **** *********** ** the ****** ******** ******** to *** ***** ******* and *** * **** core ***********;there ** * ***** ********** ** *********** ******* ***** *** *****. This difference should ** ********* *** ** *** ********* ** *** ********* ***********.

** *** ** *** middle ** ******* ******** systems ***** **-***-**** *** low ***** ******* *** plan ** ****** *** reporting **** ** **** as ********.

Secondary *********** ********, ******** *********** ************

* **** **** ******* cannot ** ************* ********** a *****, *** **** be ********* **** * clinical ***********, *** *** says:

*** *********** ********* ** being ******* **** ********* THERMOGRAPHS ****** ** ********* with * ********* *********** using * ******** ***********.

*** ******** *********** ****** conform ** * ******** standard,*** *****-*-**.

**** ******** ******** *** now-ubiquitous ******** ************ **** over *** ********; *******, such ******* **** ** tested ** **** * lab *** ** * "sufficiently ***** ***** ** human ********", ****** '*******' body ************ (*.*. **** held ** *** *****) which ******* **** *** testing.

*** *** ********** ********** accuracy ** ±*,*°* *** clinical ************.

Fever **** *** *** "***** ****** ************* **********"

******/** *****:********** *****-*-**:************* ************ ***** **** fever ********* ** ******** under****************:

[***] ********* ************ **** been **** ** *****-**-*****, ports-of **** *** *** entrances ** *********under ****** ************* ********** with the intention of separating febrile from afebrile individuals to help prevent the spread of communicable diseases

[***] **** ******** ******** general ********** *** *** deployment, ************** *** ********* of * ********* *********** intended ** ** **** for ***-******** ******* *********** screening ** ***********under ****** ************* ********** to prevent the spread of infection.

*******, **** *** *** stopped **** *****,**** *** ***'* *****, **** ******* ******* outdoor ***** ********* *********:

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Avoid ****** ******, */* ******, ***** ****/**** *******

*** *** **** *** type ** ******** *******, as ** ***** ****** accuracy. ************, ****** ****** such ** ************ ** halogen ****** ** *******:

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*** *********** ************ ***** to ** ***** ** the **** ** ******** used ** *** ********* area. ******** **** ** incandescent, *******, ****** ******** halogen *** ***** **** of ***** **** ******* significant ************ (****) ****** be *******. *** **** chosen *** ********* ****** have * ***-********** ********** and ******* ********* ******** radiation **** *** ************.

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*** ********** */* ****** be ******** ** ****** they *** *** ******* onto ****** *** ******* them:

****** **** ******* **** as *** ************ ***** can ***** ****** ******* or ******* ** *** FACE *** ****** ** baffled ** ******** ** prevent ******* **** ******* directly **** *** *******.

*** *** **** **** "sun-facing *******, ******* *******, or ******* ** **** (cold ******* ** ******* walls" *** **** "*********" with ******** ******** *** must ** ******* ** well.

** ********, ***** ** an ********* * *** *, 2020, ******** ************** * ********* ****** monitoring *** ***** **** entrance ** * ****** store:

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Long **** ** ********** ***********

*** *** ********** * wide ******* ** ********** implement ***** ********** ****** a "****** ********":

  • ********* ** ********* *** clinics, ********* ********* *****;
  • ********* ** ******** ************** facilities;
  • ********* ** **********;
  • ********* ** *******;
  • ********* ** ********** *********, including ****** *** **** stations;
  • ********* ** ***** ******** locations;
  • ****** **************.

**** ** *** **** reason "***** *******" **** gone **** * ***** product ** ******** *****-******* ****** ******.

Ambient *********** **** ** **********, ****** ** *** ** ********

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*********** ******* *********** ** important, ** ****** ***/**** people **** *** **** accurate *******, ************ ** they *** ********, *** says:

*********** ***** ******** ****** not ** *** **** or *** *** *** especially *** ********.

*** *** ****** **** ideally, *** *********** ****** be **°* ** **°* (68°F *** **°*) *** humidity **** **% ** 50%:

*** ************ ******** ** a ********* *********** *** be ********** **** *** individual ***** ******** ** sweating. ******** ********** *** vary ********* ** * person’s ******* *****, *********** of *********, ****** ** adaptation *** *** ******** humidity. **** ******** ** controlled, ***** ******* *** minimized. ** ******* ********** and ******** ******* ** the *********** ********* *******,it ** ********** **** *** ********* *********** ** ******** ** * ******** ****** ****** *********** **** * *********** ***** ** ** °* ** ** °* *** ******** ******** ***** **** ** % ** ** %. [emphasis added]

*** *** ****** *** way ** ******* **** conditions ***** * ** a ******* ****-******* *****:

***** ********** *** **** be ******** ** ******** a *****, ********** ***********. EXAMPLE * ****-******* *****.

Secondary ********* **** ************

** ***** ** ******* "cross-contamination" (******* *********** ** the **** ********* ******), the *** ********** **** a "********* ********* ****" be *** ** "******* from *** ******* ******* flow" *** ****** *** are ***** ********* *** fever:

*** ********* ********* **** should ** ** * tangent ** *** ********* thermograph ****, *** ******* from *** ******* ******* flow. ********* **** *** entrance ** *** ******** prevents **********.

*** ********* ********* **** should ** ******** ******** with "*****, *****, *************".

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**** ****** **** ******* a ****** *** ****** and ********* ******* ******* individuals ** ********** ** the ******** ****** **********:

*** ********* ********* **** is * **** **** that ****** ******** **** a ******** *********** *** accessories **** ****** **** ISO *****-*-** *** ****** be ******* ** ********* medical *********. *** ********* screening **** ****** ** equipped **** ********** ********, e.g. *****, *****, *************. To ******* *****-*************, *** secondary ********* **** ****** be ********** ** ***** patient ******* **** *** facility ** ** ********** with ********** ******* *** with ******* ******** ** others (*********** ****************** **********).

Ease-of-Extraction **********

**'* ********* ** **** sure *** ********* **** allows ******* "**** ** extraction", *.*. ****** *** be ******* ******* ******** bottlenecks ** *** **** of ****** ******* *******:

*** ******** *** ** be ******** ** * manner **** ****** **** of ********** ** ********* febrile ***********

No ******* ******

*** *** **** ********* should *** ** **** screening *****.

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**** ******* **** ** to ****** ********* **** and **** ****** **** fevers **** ******* ***** faces ** **** *** system:

******* ****** *** ** proximal ** *** ********* thermograph ****. **** ** to **** ******* ********* cross-infection *** ** ******* facial ******* (********** ** the ******* *******) *********** prior ** ******** *** screening *********** ****.

**** ***** **** *********** cool *** **** ******** a ****** ** ***** the ***** ********* **** they ** *** **** a *****:

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Backdrop ************: ***-**********, ***** **** ******

*** *** **** *** recommendations *** *** ******** behind *** ****** ***** screened, ******* **** ** not ** **** *** that **'* *** **********:

*** ******** ****** *** individual ***** ******** ***, where ********, **** ******* should ** — ********* uniform, — ***-********** ** the ** ********, *** *** **** ** colour ** *** ******* spectrum (****** ** ***** than *****).

People ****** ** ******** ***-**-*-****

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** *** *** **** possible **** ** *******'* inner ***, *** ********** a ****** **** ****, and **** ****** ****** "stop *** *****":

*** *********** ** ** screened *** ********** **** single **** *** ****** to **** ** ***** so **** *** ********* thermograph *** ******* *** region ******** ******** ** the ***** ****** *********** distribution *** ********** ** a ****. ********* *********** one ** * **** facilitates *** ******* ** a ******** ********** *** allows *** ************* ** potentially ******* *********** ********* secondary *********.

*******, *** **** ***** that ** ****-****** **********, the ****** *** ******* in "**** **** ****".

** ******** ********** ** high ****** **********, *** response **** *** ********** of *** ********* *********** should ** ******* ** operating ** **** **** time *** ***** *** effective *********. **** *** necessitate **** *** ********* thermograph ** ****** *********.

*** ** ***-****** *********, it's ***** **** ** ask ****** ** ***** still:

**** *** ******** **** and ********** ** *** as *********, *** *********** screening ********* *** ******* the ********** ** ***** still ** * *** location ** ***** ** the ****** ** *** screening *********** ***** *** temperature ** ***** ********

*****, ***** ********** *** *** ***** Cam****** ***** **** ***********, advertising * ************ ********* of ** ** **** people:

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Data ****** ** **** *** *** *****/**** ********

*** ********** *** *** data ********** ** ******* temperature ****** ** **** for *** *****:

*** *********** ************ ****** retain **** *********** *** at ***** *** ***** (normal ******* ********** **** for ***** ********** ********). The *********** ************ ****** be ******** ** ******** the **** *** ****** periods **** ****** ********* by *** ****** ****** authorities *** ***** ************* ensuring ********** ** ****** safety.

****: ***********, *** ******** *** ******* ******* ****** ********, as ****** ********* *** "********** ** personal ****" *.*. **** that *** ******** * specific ****** - ***** thermal ******** ******. *******, if *** *** **** records * ******'* **** and/or **** *** ***** her ** *******, **** that ******* ******* ** GDPR ** ****** *********** is ********** * "******* category" ** ******** ****. (******* *). **** ***** **** data ****** ** ******* very *********, *.*. **** secure *** **** ****** with ****** ***********. ** ISO *****:

*** ********* **** *** electronic ****** *********** *** thus ******* ** ******* and ******** **** ** many *************. ** ****, access ** *** ********* data ****** ** ********** and ****** ******* *** all ******** ****** ** maintained ********* ** ***** law.

Applicability / ********

***** *** *********** ** IEC / *** ********* is ***** *** ******, they *** *** ********* legally *******, *.*., *** does *** **** ***** to **** *** *********. However, **** *** ***** cited, ***********, ** ****** out ** ********** ********, e.g., *** ** *** here. ** ****, ***** against ***** ********* ******* some **** **** ************* should ********. ****, ** one **** ** ******* them *** *********** ********** subsequently *** ****** ** that ********, ** ***** increase ***** **** (*.*., the ************ *** *** follow *** *** / ISO ********). ** *** other ****, ** *** middle ** * ********, the *********** ********* **** standards **** ** *******, at ***** ***** ****.

Vote / ****

Comments (32)

**** ** * ***** article *** **** ****** in **** ******** *****. While ******* **** * was ************** ** * conference **** ***** ** was ********* **** *** customer's ********* **** ** for ***** *********:

*** ******* **** ** entrance ****** - ** above**.******** ********** **** ********** them *** ********** ********* due ** *** ******** on **** ****. **** there * ******** **** is **** *** ************ and ** ***** ***.* degrees ********* **** *** disallowed ******.

**** ***** **** ** would ** * **** wide ***. ***** **** people ***** ******** **** be ****** ** **** outside *** *** ******* is ******* ** **** seems **** * ******* concern **** ********.

***** *** ***** *,*** or ** ****** *********, I ***** ***** **** change ***** ******** ** that, ** **** ** on ** **********. **** will ** ******** * lot ** **** ******* with ***** ***** **** secondary *********, ****** ** the ******** **** ** doing ******** **** ** >100.4F, * ***** **** will *** **** ************* there, ** ****** ***** have ****** ****** **** enough **** ******** ****** waiting ** *** **** queue *** ********* ************.

*** **** ***** *** about $**** ** ******** that * ***** ** hacks **** ****** ******** on.

***** *** ** ***** are ********, ** ******** will ****** ****. **'* going ** ** * lawless ********* *** *** next *-* *****.

**'* ***** ** ** a ******* ********* *** the **** *-* *****.

*** **** ** *** I'm ******** ** **** to ** *********.

***** * ***** ***** are ********, * ******** no ********* **** ****** them. **'** ***** ******** steps ** ****** *** sales **** *****'* **** any ******, ****** *** customer ************ *** ****** to **** * *** of ***** *********** (** did *** ******* ********* or ********). *** ** a **** ***** ******** on **** ***, *** an ** ***** ********** and **** ** ******* on **** * ** the ***** ** ***** bullet ****** ****** "*,*,*" need ** ** **** to *** ******** ********. We **** ** ** great ******* ****** **** if *** ** ***** points ****'* ******** ** expect ******** ** *******. I *** *** ************** on *** ********** ** educate *** ********* ** what ** ******* **. marketing, **** **** ********* through ***** ***** **** the ************.

** **** ********** ******* case, ** ****** **** in **** **** ******* evidence ******** **** *** vast ******** ** ****** are ************, ******* ** course **** **** ******* no ********. ** ********* and ******** ********* ** individuals ********** **** ****** could, **** ** * perfect ***** **** *** standards ******* ***, **** to ****** * ******** and ** *** *** purposes ** "******** *******" as **** ** ******** else.

**** ****. **** ** one ** ***** ********* that ***** *** ********** feel ***** ** **** enter *** ********, ********, or ********.

*** *** **** **** "Fever **** ****" *****? :)

*** ******** **** **** night *** **** *** Spokane ******* ** - they *** ********* ****** (not ********* ** **** but ***** *** ***** logo) *** **** ******** all ********** *** **** at *** *** ********* point. **** *** **** of * ****** ***** on *** *** ******** requiring ***** *** ********. Story **** **** **** first ******* ** ********* the *******. ******* ******* the *****

****** *** ***** - can't **** **

****** *** ***** - can't **** **

*****'* **** *** ****** at******* ***** - ******

***, * *** **** analize "******" ** ******'* system ** *********.

****** ** - ****'* the ***

* **** *** * customer *** ***** ****, so *'** **** ******** for ********* **** *** marketing ** *** / IEC *********, ***** ********* the ********** ** **** article

*** **** *** * found **** **** *** inner *** ** *********** above *********** ** ****** (*** whom *'** ***** ***** of **** ***** ** hour ***)

** ***** **** **** like ** ****** ******* built ******* ** ******* to * ******* ******* camera ****** ** ********** as * ***** ********* device

******** ** *** **** stating ***** ***** ********** the ****** **** *** use * ****** ************* medical ** ******. **** are ******* * ******* background ** ********, ****** be ******* *** ** a ****, ******* ** sunglasses, *** *******, ****, masks **** *** ****, etc. **** ****** *** ahead ** *** ***** "making * ******" ********* that *** ** **** field.***.**********.***

#**, ** ****-********* ** allowed. ** **** ******* does ** ****, **'* fine ** *** ** but **** ** ****** about ** (*.*., *** "We", *** "****").

*'** ***** **** ** set ** * ******* cam. * ***** **** a ***** *********** ** how * ********* ****** improves ********. * ********** it's *** *********** *** every ********* *** *'** seen ***** ** ** the ******'* *** ****** operation. ** **** *********? Is ***** *** ******** connection ******* *** ****** and *** *********? *** there ****** (****, ******, best) *** ***** *********** devices? ****** ***** ** evaluated ** ****? *** how ** * **** it's ********? ******.

** ***** *** ******** connection ******* *** ****** and *** *********?

** ******** ********** ******* the ****** *** *** blackbody ** *** * we *** ******* ********* (Dahua, ****, ******). *** from *** ****** ** other ******'* *************, ****'* normal. *** ********* *** the ********* ** * specific *********** *** **** input **** *********** ** the ******** ** *** thermal ****** / *********** device.

*** ***** ****** (****, better, ****) *** ***** calibration *******?

** ***'* **** ****** about *********** *** ** understand *** *** ***********. Some *** *******, ******, e.g., *** **** ** at ***** ***********, ****** support ******* *********** ****** (35C ** ***), ***.

*** *** ** * know **'* ********?

*** *** ** *** and **** ***** ****** do ** ** ** test ******* **** **** IR ************ '****'. ** have * ******* ** them ***, *** *** short **** ** **** been ******* ** ***, the *********** **** ***** temperatures ** *** *** mark.

**** - **** *** considered ****** **** ******* public ** ** *** be ****** ** ****** media ** ******* ********* buying ******* ****** ******** under *** ***** ** identifying *********** *********?

#*,**** ** ** ******** link ** **** ******** *** ** ****** with ** *** ***** publicly.

* ** ****** ** find *** ***** ******* between ********* ***** ** members *** ******* ****** to *** ******* ******.

************ (********* ******** ************ with * ******* ******) is * ********* *********** of******'* ***.

*** **** ***** **** a ******* ****** **** can ** ******** ** various ************* **********, ********* absolute ********, ***********, ***. When **** *******, *** wavelengths ******* *** ****** are *** ******* *** same ** ***** ******* by *** ****** ****** (extreme *******, *** *** get *** ****).

** ******* ** * blackbody *** *** ******* the ******* ****** **** it *** **** ** the ****** *** *** pixels ******** *** ********* to ** * ******* reference. ** *** **** compute *** ********** ******* the ***** ** ** actually *******, ***** **** be **** **** ******* due ** *** *********** conditions, *** *** ***** it *******. **** ****** the ****** ** ********* an ****** ** *** for ***** ************ (***********) to *** * **** accurate *******.

**** ** ******* ** concept ** ******* *** whitebalance ** ** ******* camera. **** *** ******* camera ******** ******** ********* colors, *** *** ****** an ****** ** **** it ******** *** ******** to **** *** * more ******** ***** **************. On * ******* ****** we *** ********** *** temperature ******* ** *****. You **** *** ********* reference ********** ** *** scene, ** *** ************* variables ********* *** ******** are **** ****** ** stay ******** **** *** an ******* ****** ***** a *********** *****.

*** ******* ****** ************ that *** *** ********* on ******** ************, **** detecting * ****** ***** a *********, *** ** really **** ***** *** relative *************** ** "***" and "****", ** *********** do *** ******** **** into ****.

**** *** ** * black **** ********* ** the ***** ** **** is * **** *******. However ** *** ****** has ***** ********, **** how ** *** **** the ***** ** **** is *******, ********** ***** the ***** **** ********* is **? ******* **** of ***** ********* *** placing *** ***** **** so *** **** **** the ****** ****** ***** is *** **** ****** covering *** *********. ** that **** ** *** uniform ******* ** *****, then **** *** *** doing?

*** ***** **** ** supposed ** ** ** the **** ***** *** intend ** ******* **. Of ****** ***** *** lots ** **** ** set ** ** *****, and ** **** ***** you **** ***'* ********** for **** ****** ** installation.

************* ***** ****** *** not ********** ** ******* black ****** **** *** pixel ********, ********* ******** and ********* **** ********* to **********(*****). **** *** BK, ****** **** **** cameras **** *** ** physics. ** * ******** only *** ***** ** we **** **** *** and **** ********* ******. OH...case ******.

*****? ** ********.

***** ******** *** **** known ** *** **** redditors...

#*************** #********

** **** *** ** to ****** **** ** this ***!

******, *** **** ****, not * ****'* ******* camera **** ****? ***** support ***?

....***** *** *******, *** your ****** *** ****. Oh *** **** ** all *** *********** ******** with ** **** ** fact ***** *****?

#****

**** ** ******* ** very *******. ** ** integrator, ** **** ****** with **** ****** ********** international *********. * **** that ** ** *** moral ********** ** ******* the *** ***** ** be ***** ** *** pros *** **** ** what ******* ** ********* for **** ********** ******* camera ***********.

****** ***** *******. ***** you ****.

****** **** **** *** the ******* ******* *** John.

*'** **** ********* ** requests *** ************* ** the ******* ********* *******. I've **** ***** **** time ****** ** ******* some *********** ************** **** was ****** ** **** manufacturers *** *********** ****** to **** ********* ** anxious ***-*****. *** ******* you've ******** ********* *** standards **** ** ** particular *****.

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

**** ** ******** *** of *** **** **** written ******** ** *** subject ****.

**** **** ****! **** helpful *******.

****** *** **** **** thorough *******, ****** ******* what ** *** ****** to ****** ** *** customers ******* ** ****** these ******** *******, **** quite **** ************ * must ***, ** **** really ****** ******** **** on ***** ** ******, thanks ** *** "****" marketing ** *** ********* and ******* *** *******.

*'* ******** ***** ******* points *******: *** ********* that ***** *** **** wash *** ****** *** measure, *** ****'* **** in ***** ***** ** analysis (******* **** ** upface *****).

*******, *** *** **** washing ****** *** *********** of *** ***** ******* whatsoever ? * **** you're *** ******* *** inside ** **** ***, and ** **** ***** drops *** **** **, the *********** **** **** to ****** ***** **** a *** ******* **** (my ***** ******).

****, **'* **** **** wearing * **** ****** your ******* ** ********** the *******, ******* ** your ****** ** ** your **** ***********, ******'* that ** ******* ** improvement ? * ********** that *** ********** ******* the ***** ******* **** and **** **** ** around * ****** (*******), so ********* *** **** measure ** *** ****** lower **** ****** **** temp ********, ******* ** more ***** ********* ** masks *** ****.

** ****** *** ******** or ******* **, * would ** ******** !

** *******, ****** *** your *********.

*** *** *** *** don't ******* ******* *** cold ***** ******* *** inner ***. *******, * would ****** **** *** key **** ** *** face *** **** **** detection ** *********** "********* ******** ********** *** ***** ******* of *** ***", ** it's *** **** *** tiny ****** *** ** the ***** *** *** the **** ****** ** as ****, ***** ***** definitely **** **** **** some *****.

****, **'* **** **** wearing * **** ****** your ******* ** ********** the *******, ******* ** your ****** ** ** your **** ***********, ******'* that ** ******* ** improvement

** *** *****, **** skin *********** ** *** the **** ** **** temperature - **'* ********* a *** ******* *****, not **** * ****** (see *********'* ***** ***** on "**** *********** ******"). So ** *******'* **** reads **°*, * *** breath ********** **** **** it **** ****** ** the ******.

IPVM Image

**** **** *****, *** other ********* ** ******-*** let ** ****.

**** *** **** * great *** ** ************ inaccurate *** ***** ****** regarding ******* *********, ***, and ***** ****** ** suspect *************. **** **** said, ***** ** ** possible ** ******* ** accurate ************, ** ******* the ********* *** ************* in *****?

****** ******* *** *** fever ********* *****.....

******** ** **** * big ***** ****....

*****?

***? ****'* **** * thought.

***** ** **** **** everyone **** ******* ********* to **** ** *** MOON. ** *** ****!

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

******* ** ** * am *****. *** *** IEC ****, * ****'* see *** ***** ********* thermal ******* ** *** market ***** *** **** all *** ************.

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