Dahua and Hikvision Patent Applications For Manipulating Fever Screening
Hikvision and Dahua have filed patent applications for methods of algorithmically manipulating fever camera readings, contra to IEC/ISO standards. This aligns with the findings of IPVM's peer-reviewed scientific study that their devices used some form of "compensating algorithm" to systematically manipulate temperatures.
Inside this note, we examine the China-filed patent applications and how this shows direct evidence from the companies themselves that temperature readings were being manipulated.
Both companies declined to comment.
Hikvision ******
*********'******* ***********, ***** ** ********* ****, 2020*** * "****** *** ********* *********** measurement ******** ***** ** ******* ******* and ******* ******* *********" ***** ** fix *** ******* **** ******* *********** measurements "*** ** ********* ** * number ** *******, ********* ** ********** temperature *******."
*** *** *** ********** *** **** problems **** ********** ****** ** ******** by ******** ** ****** ********* ******* and *****. ********* ***********, *** ******* camera *********, **** ********* ******* ***** guidelines, **** *****:
******** ** **********, *********'* '*********' ****** this ******* **** ***-********* ******* **********, and *********** ******** ** ******* ****** the ****** ** *** ******'* ***. This ******** "********* ** *** *********** measurement" ** ******** ** ********* ************ directly:
** **********, **** ******* ** ***** temperature ************, *** ******* *********** ******** due ** ***** ********** ** ***** temperature ** ******, **** ******** *********** fluctuations *** ** ******** **********.
Dahua ******
**** *********,*****'* ****** ***********, ***** *** ***, 2021*** ** "****** **** *********** *********** method *** ******, ******* ****** *** electronic ******," ***** ** ******* ********** due ** ******** ************, ************ ******** on ******* ***********.
** *** *******, ******** ** ******* temperature, *** *********** ** *** ***** body ** ***** ******** ******, *** in **** ******, *** *********** ** the ***** **** ** ******** *****.There ** ** ********* ******** ** *** ******* ** *** *********** ******** *** ** ******* ***********. [emphasis added]
*** ****** *********** *** ***** ***** to *** **** **** **** ***** was ********* *********** *** ******* ***** standards ****** ** *********** ********* ***********:
** ****, ***/*** ********** ***** ** effective *** ****** ******** ** "*** problem ** *** *********** ******** *** to ******* ***********." **** ***** *) only *** ******* ******* *******, ** a *********** *** ********-********** ***********; *) after ******** **** *******, ******** **** wait ** ******* ****** ********* ** come ** **** ***********.
*******, *****'* ****** ****** ** ****** ambient *********** *** ******* ***********, *** using ***** ****** ** ****** ** adjustment *****, *** "************ ***********." *** surface *********** ******* ** ******** ** this ******, *** * ***** ******* - *** "****** ***********" - ** reported:
*** ****** ****** ******* *********** ** compensated ** *** ****** ****** ************ temperature ** *** ****** *********** ** the ****** ****** ******.
*** ******* ** **** ******* **** Hikvision's, ******* ** * ***** "*********** compensation *****" ****** **** ******* ********** or *********** ********:
* ******* ***** ***** ******** *** adjustment ******* ** * *********** ******:
Hikvision/Dahua ** ********
********* *** ***** **** *** *** respond ** ******** *** ******* ********* the ****** ************.
Violates *********, *********** ************
******* ****** ******** *** ****** ** compromised ** ******** ************, ** **** Hikvision *** ***** *****. *** ***** are ******** ********, *** **** ** why **************** ******** ********* *** ****** ***** and ********* *********.
*******, ****** ********** **** ********** ******* use-cases *** ***** ********, ********** ********* sales. **** *** ******** ** ******** thermal ****** *********** **** ***** ***** have ******** *** ************* ********* ** compliant *********, **** ***** *****' ******* ********* **** ***-************ on *****, *********, **'* ********* ******* ********* ** school *****.
********** *** ****** **** **********, ****** performance **** **** ** ********* ********* standards, ****** **** ********** ** ****.
**** ** ******** ** *** ********* try ** ****** ******* ** *********** falsify ****, *** **** ***** **'** talking ***** ***** ****, ** *** all **** ********** * *****.
***. *** *'** **** ** ***.
******** *** * ****** ** * fraudulent *******.
"***'* *** **** **** ** ***!"
** * *** *** * ****** for ** ******** *-** ********* ***** Modulator.
** **** **** *****?