Dahua Face Recognition Camera Tested

Author: Rob Kilpatrick, Published on Oct 15, 2018

Dahua has been one of the industry's most vocal proponents of the value that AI creates:

As part of this, Dahua has released a facial recognition camera, the DH-IPC-HF8242FN-FR, claiming:

Artificial Intelligence at the edge – performing complex real-time facial recognition and facial feature comparison

But can this new model really deliver face recognition in real-world scenes? We bought and tested the HF8242 to find out, answering these questions:

dahua face recognition ipvm

  • How many false negatives or positives to expect?
  • How well does the camera handle subjects looking down or away from the camera?
  • How does recognition perform in low light?
  • How does recognition perform in <1 lux with IR?
  • How does recognition perform in WDR scenes?
  • What imaging and environmental issues impact recognition performance?
  • How well did the camera capture demographics such as age, gender, facial hair, and others?

***** *** **** *** ** *** ********'* **** ***** ********** of *** ***** **** ** *******:

** **** ** ****, ***** *** ******** * ****** *********** camera, *****-***-********-**, ********:

********** ************ ** *** **** – ********** ******* ****-**** ****** recognition *** ****** ******* **********

*** *** **** *** ***** ****** ******* **** *********** ** real-world ******? ** ****** *** ****** *** ****** ** **** out, ********* ***** *********:

dahua face recognition ipvm

  • *** **** ***** ********* ** ********* ** ******?
  • *** **** **** *** ****** ****** ******** ******* **** ** away **** *** ******?
  • *** **** *********** ******* ** *** *****?
  • *** **** *********** ******* **
  • *** **** *********** ******* ** *** ******?
  • **** ******* *** ************* ****** ****** *********** ***********?
  • *** **** *** *** ****** ******* ************ **** ** ***, gender, ****** ****, *** ******?

[***************]

Good / *****

*** **** ******** ****** ** *****'* ****** *********** ****** ** that, *** ***** ******* *** *** ******* *****, *** ****** generated *** ***** ********* ********** *** ************** ****** ** **** historical ****** *********** *********. **** ** *** ********* * ****, overwhelmingly ** ********** ** **********, *** *** *** ********* ********* objects ** ***** ** **** ***** "**" ******** ****, *.*.,********* ********** *********** ******* ** **** ******.

Bad / ******

*******, *** ***** **-***-********-** *** ******** ****** ****** ** **** difficult ** ********* *** ******/**** ********** ***.

  • *** *********** ****:*** ****** ****** ** ********* ~**%+ ** ******** ***** ***** were ********, *** ** ******** ******, **** ***** ** *********, subjects ******* ****/****, *** *** ***** ******* *** ******** ** failures.
  • *********** ********** ********** **** ******* ****/****:** *** *****, ****** ********** ********* ** ** ***** ~*-**% when ******** ****** **** ** **** **** *** ******, ****** it *** ******* ***** ** ******** *******.
  • *********** ***/*** ***** ********** **********:************, ********** ******* ** ***** *-*% ***** **** ********* ******** conditions, ********* ****** *** ******, *-* *** *** *****, ** dark ****** **** ** **.
  • ******* ** ** *********** ***** * *** (******* **):***** * ***, *********** ****** ******, **** *** ******** ** subjects ******. ** ~*.* *** *** *****, ********* *** *** work ** ***.
  • ******** ********* ** ******** ***********:*** ****** ******* *** ****** *** ******* * ***** **** two ***** ** ******* ** ******** *********, ***** * ***** database ** ***** ** ****** ** * ***** ******. ** higher ****** *************, ******** ** ****** ** ********, ** ********** subjects ******** *** ********** **** *** ****** **** **** *****.
  • ******** ********* *********** ***********:*********** *********** ** ******** *** ********** *****, **** ****/******, *******/** glasses, *****/** *****, *** ***** ******* ********* **** ** *** time.

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

*******

*** ***** **-***-********-** ***** *** ~$*,*** *** ******, *** ********* lens.

Adding ****** ** *** ********/*********

********' ***** *** ***** ** *** ******'* ******** ******* *** web *********. ***** ****** ** ***** *** **** ****** ** be **********, ***** **** *** ***** ***** ***********, *** **** deploy ** ** *** ******.

**** **** ******** ****** **** ** ********. ***** ** ** means ** ****** *** ****** ** ******* **** ** *****, for *******.

****** *********** ****** *** ** ******** *** *** ***, *** not ******** ** *** ****** ******, ***** ******** *** ****** on *****'* ****. ***** ********** * ******* ****** ** ***, the **** ****** (*** ******), ***** ****** ***** ** ****** for ******** ********' ****** ******. ******** **** ***** ********* *** demographic ***********, *** *** ******** ******.

demographic information search via nvr

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

****** *** ******* *** ****** ****** ** ********* ***** ~**% of ********** ******** **** ****** ******* *** *****, **** ***** Dahua's ******* ********** ****** ** **%.

*** **** ******** ***** ** ****** *********** *** ******* ****** angle. *** *******, **** ******** ****** **** (** **** ** when ******* ********), ********* *** ****** **** **** **% ** the ****.

frequent missed recognition due to head tilt

************ ** *** ******** **** **** ****** **** ****** ************, even ** ******, *** ******, *** **** ***** *****'* **** exposure ******* ***** ******** ** ********** ******** ** ***** ** the *****. *** *******, ** *** ***** *****, *** *******'* facial ******** *** *********** ** ****** ****** ******** ** ***** of *** **** **** ****** *** ** *** ****** ****** (though **** ******* ***** ***** *******).

https://user-images.githubusercontent.com/11630256/46947956-a23f3500-d0a6-11e8-824a-01a3d7015b21.png

~90% *********** ********** ** ***** **********

****** *********** ********** ******** ***** **% ** ***** **********, **** the ******* ******* *******, *** ***** ****** ***, *** ****** mounted ** *** ***** *************** (~*' ****, ~**° ********).

Head *******/******* ~*-**% ********** ********

****** *******, *** ********-** ************ *** ~*-**% ***** ********** ****** when *** ******** **** *** ****** **** ** ** *** side, ******* * ******* *** ****** ******* ******* *** ***** looking **** ** ***** ***** ** **** ** ******* ***** head **** **** *** ******.

head titled

Recognition ********** ***** ** *** *****/****/*** ******

*******, ******* ********** ******* ********** ** **** *******. *** *******, low ***** ****** (~*-* ***) ********* ********** ** ~*-*%.

low light

** *** ****** ****** (In **** ***** ********** ******* **** ~**-**% **** ****** ** and **** ** **-**% **** ** **.

external ir illumination

*** *** ******* *******, ******** ** ~*% ** * *** scene **** * ********** *** ** ~**** **. *** ******, shown *****.

wdr

Frequently ********** ************

*** ***** **** *** ****** ******** ** ******** ******* *********** information **** ***** *** ********, *********:

  • ***: * ******** *** ** ********, *** ** ********** **** in ***** ********** (******, *****, *****, ****** ***, ***)
  • ******/****
  • ****** **********: *********, *****, *****, ***.
  • ******* ****: ***/**
  • *** * *****: ***/**
  • ******* * ****: ***/**

** *** *****, ***** *********** **** ********** ********* ** *** counts, **** *********** ******* ****** *** ******** ********* ******, ** various ******, ***** ******, *** ******, *** *****, ***.

*** *******, *** ******* ***** *** ********** ***** ** **** 40 ***** *** (****** ***: **), **** *** ******* *******, and **** *** ******* * *****.

age beard

glasess

**** ******** **** **** ********** ********** **** ******** ** ****** and **** *****:

female

Multiple ***************

**** *** ****** ** ~* ***** ** *******, *** ****** recognized *** ********** ****** *** ******* **** *****, ***** * database ** ~** ****** ** * ***** ******.

** ****** ******* **** **** ********** *****, ***** ****** *** likely ** ******** ** *** ******* *** ****** ****** ******* increases **** ****** **********.

Full ****** ************* **** ********* ** **** ***

** ***** ** ****** *** ********** ******** ** *** ******, the ***** **** *** ** ******** (~$*,*** ****** *** *** channel/1TB). **** ******** ********* *** *** ********* ** * ******** registered ******, ******** ********** *******, *** ****. ********* *** ** done ** * ***** *** **** *** ********* ***, *** is ******* ** *********** *********** ****, **** ** ******** **** search.

***** **** **** **** ********** **** ** ******** ** * VMS ********, *** *** ********* ** ***** *******.

Typical *** ****** **** ******

*** ********-** ** ******* ** ***** ***** *** ******, ****** slightly ****** *** ******* ** *********** ********** ********** ** *****.

similar construction to other box models

Versions ****

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

  • ***** **-***-********-**: *.***.*******.*.*, ***** ****: ****-**-**

Comments (21)

* *** **** ****** **** ** ***** ********* *******, *** how ***** ****** *********** ** ****** ** *****? ******* ** and ****** *** ****** **** ******, *** ** ****, ***** are *** **** ****** ** ***** *** ******* **** ******* of ****.

****, ****** ** ***** ** *** *****......* ****** **** ***** complexion ** **** ****** ** "***."

** *** *** **** **** ************, *** **'* * **** issue ** ********. **'* ********* ****'* **** ** ** *** past, ** ****.

****** *** *** **** ********* ** ***** ****** ** ****.....:)

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

**** ******** **** ******* ******* ** ******* ****** * ******* bias ** ********* ****** ******* ******. *****'* **** ****** ** photography *********** ********** **** ************ *****.

******* *********. *'* ******* ** **** ** *** **** ** take ****** ** ********* ****** *** **** ****** ***** **** the ******** ** *** ***** *** **** ******* *** **** people *** ******* ** *** ***** ** **** ** **** walked **** *** ****.

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

****** ******** ********* ****** **** * ****** ******* ***** **** in ******* ********** **** **** **** ******** ** * ****** reference. ****** *** ******** ********* ******* ******** ****** *** ** an *****.

*'* ******* ** **** ** *** **** ** **** ****** at ********* ****** *** **** ****** ***** **** *** ******** if *** ***** *** **** ******* *** **** ****** *** looking ** *** ***** ** **** ** **** ****** **** the ****.

* ****** **** ***** * ******* ** ** **** ****** down *** * ******* ** ** ******* ** *** ****** and ** ****'* **** * ********** **** ********* ***** * used, ** ***** ***** **** * ~**% ********** ****** ** my **** *** ******* **** ****** *** ****.

head tilt vs straight 1

**** **** ******* **** *** ****** **** ** **** ****** down, ********** ****** ******* ******* ** **** ** **** ** the ****** *** ** *** *** **** *** **** ******.

head tilt vs straight 2

* *****, ** ** **** ** ** ** *** ****** ratio ****** ********* ** ***** ********?

****, *** *** **** ** **** ** *** ******* ****** by *********. *** ******** **** *** ********* ** *** *********. Facepro **** **** ******** ** ******* ** ******* ********. *****, it ** **** ** ****** **** ********** ** **** ******.

** ** ************* *** *** *** ****** * ******** ****** and *** **** ** *** *****. *** **** * **** image ** *** **** ** *** *****.

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

*'* ******* *** **** ****** ** ******* ***** ********* ***** this (*** ********* ****** *** ********** ************), **** ** ********* or *******. **** *** **** ***********, *** ******** ** * competitive ***** ***?

**** *** *** ***** ****** ****** *********** ***, *'* ******* to *** **** ****** *** "*******" ** *** ********. *'** dealt **** ********* **** *** ******* *** **% ******** **** to *** ******** *****'* *********, *** ***** ********* ***** ***** 90% ** *******.

**** *** **** ****. **** ********** ***** *** ** * fairly ********** ** ******** **** *** *** ******** ********* ** uncontrolled **** *** ********. *** ********* ************ ************, * ** longer ******** ****** ** ** ** ******. *** **** ********** and ********** **********, ******** ** ******** ****** ** **** ********** images? ****. *** * ** ********* **** **** "**** ********" and "**" *** ******* * *** *% *** ** ** unconstrained ************ **********. ****** ******* (*.*., ***-*) *** ******** ** achieve *** **** ** ******* **** **** ** ********** *** practical.

**** ******! * ***** **** ** *** * ********** ******* embedded ****** *********** *********, **** *****, ********* *** **** (**** Ayonix). ** ***** ** *****!
****** ****** ** ** ** ** ******** ** *** ******* Axis ******.

***** ***********...***** ***. ** ** ********* **** **** **** ****** recognition ********** ** ** *** ******* *** *** *** ***** for *********? ** *****'* ********** * **** ***** **** ** the ***** *********? **** ********** ********** ******* *** "********** ***" theory, *** ** **** *** ***** ***** ******** ** ***** adaptors?

**** **** **** **** **** ** *** ****** ** ****** technology ***********? **** ********* ******* ** **** ** ***, ** became **** ******** *** ****** ** ******, *** ** ***** does *** ****** ** ****** ***** ********** ***** **** *** users.

** *********, ******* **** ****** ***********, ***** **** ********** ******, it's *** **** ** ******* **** ***** ****** **** ******* these ********.

*********** ****** - *** ********** **** ****** *********** (******* *************) is ******** ****** **** *** ********** ** *** *** *** get * ******** ** ******* ********** ** * $** ****** from * ****** **** *****.

**** ** *** ****** **** (**** ** ***** ********** *** angled *****) *** **** *** **** ** ******* ********** ** lower-end ****** *********** ***** ****** ******** ******* - *** ****'* where ** ***** **** ** **** ***********, **:

- ** *** **** ***********/ ********* ******** ** ** ***** capture **** (*** *** ** ******** ** **** ** ****** in * ********** ***, **. *** ******** ****** ** *********), or ***-*********** / ******* ******** (****** *******, *** ******** ********* and *** ******* *********)?

- ** *** ******** ******* **** *** *********** / **** collection / ******* ******** (***** ***** ********* ****'* * *** deal, *** *** *** **** **** ********** ****** - ** is ** *** * ********* ************** / ************** ***** ***** positives *** ***********)?

** *** ***** *****, **** *** **** ****** *********** ****** can ** ******** ** ** ************ ***** ** ****** **** the ****** ** ***** ** ****** **** ** ***** ****. There *** **** ***** ********** *** ******* *** ********* ** the ******* ** **** ** *** ****** (*** **** ******* being ******** *********** ********!) **** *** ******* **** ** **** ******.

** *** ****** *****, ***'* ***** *** * ****** **** this - ** ****************-***** ****** *********** ******* - ** ********* *** * ******** biometric ************** *********** (*'* ****!).

**, * *** **** **** **** **** ***** ** ***** days. ******* ** ******* ** * *** ***** ******** **** I *** ** *** ********** ****.
******* ******* *** *******. **** ** *** ******* ** *****. The **** **** ***** **** ***** **** ** ******** **** will *** **** ********* *******, ******* **** ** **** ***. In **** ** **** *** **** ***** ********** ********* ** understand *** **** ******* ** ********* **** *******. **** ****** is **** ***** ******* **** *********** ***** ***** *** **********. Unfortunately ***, ** *** ***** ******** ******* ***** *** **********/*******/*****/**** in *****/*********.

** **** * ***** ***** **** **** ****** ******* - biometric **** **** **** ** ***** ******* ********** ***********.
** **** *****: * **** ** *** **** * *** very ********* *** ****** ** **** ** ********. ** *** my **** ** * **** ** ******* **** ***** ********** environment **** ** ****** *** ***** *% ***. ******* ****** under **********. *.*. **** ** ******** ******* **** **** ***** a *** ********* ********** **** **** ***** *** ******** * lot ******.


** ******* (****** ** ******* ** ********):
******** *********** (*** ****** ** ********):
**** ******* ** *** ******* ***** **,*%. ***** ** ** horizontal ***** **,**** ***** **%.
******* ****** ** *** ** ***** ***** **** *** ****, say ** ******* ***** ****** **** ***** ** *** ** nonsense.
(**** ** *** ***** **** *** *** ******* **** ** right, * *** ** ******** **** ******).

******** *********** (**** ** ********** ****** ** ********), *** *****: 96% (**** ** ***** *** ******* ******** ** ****** ** database).

**** ******** *** ******** ******* ** ********* *** ********** *********. Yes, ***** *** ** ******* *** **, *** *** ***** application *** **** *** **** ***. ** ** **** ********* number ** *** ********** *******. ******* ***** *** **** **** 85. ***** **** *** ***** **** ***** ***** ** ******** negative *** ******** *********** **** ** **.
**** *** ******* ***** *** **** *** ** ********** ****** setup *** **** ** *** ***:
******** *********** (**** ** *** **** **** ** ******* *** in ********):
**: **% - **** **% *** ******* ******** ** *** in ******* *** **** *********.
**: **%
**: **,*%
**: **,*%
**: ***% - ******* **** *** ****** *** *** ********* recognition ***** ********* *** ****** ** ** ****** ** ** hig.

***, ** *** **** ****** ******** **** ******** ********** ****, but ** **** ** ****** **** ********** ********** ********* ** reach ****** ******** ****.

** *** *** **** **** ** **** ***** **% ??

**** ** ***** * ***** **** *** **** *********** ****** those ******: **********, *******, **** ** *****.
********** ** ******** **** ****** ****** ** ****** *********** *******. Do *** ****** **** ****** ** **** ***** ** **** recording ** ****** ******** ** *** **** ******* **** ** faces ** *** ****. ** **** ** ******* **** ****** must ** **** *>****. **** **** ******* **** ***** ****** be *** **** ****** *** ***** *,*-*,**.

******* - ********* *** ********* ** ******** ****. ***** **** quite ***** **** **** ******** **** ********* ** *******. ** fact ******* ***** **** ***** */*** *** ******* ** *********! So ** **** *** **** ***** ** *** ******* *******. However *** *** ***** ******, *** *** **** ****** ***** in ***** ******* **** **** ****** *******.

** **** ***** *** ****** *********** *********** ** *** ****** for **** **** ***** **** ******** ****, ***** ****** ********** between ******* ********* *** ****** ****** ***** **** **** *****. Results **** ****** ** ********* ** **** **** ** ********* low. **** ** ***** *** *.*. ***** ** ******* ******* as ****** *** ** **** ** ***********. ***, *** **** cases *** *** **** ******** ** ****** **** ***.

*** ** **** **** ******** ** *** ** *********** ** in ******* ****** ****** (**** ***** *** **** **** ******* there, * *****). ***** *** ****** *** ******** ** **** computer ** *** ** *** **** ****** *** *** **** you *** **** ****, ****, ***** *** ****** **** ********. Simple ****** ******* **. ** ** *** **** *** **** people **** ** ******** **** **** *** **** ** *** in ******** *** **** ******* ****.

**** **** ** ***** ***** ****. **** ****** ** **** to ***** ** *** **** ** *****, **** **** **** to **** ** ******* ********* *,**. *.*. ** ***** **** this **** **** ** ****** **** **** ****** *** (**** again...shutter/iris/light)! ** *** *** **** ******* ***** (** ***). ****** extensively, ******* **** ********** *******.


****** **** ** *********** ** ** ******* ** *** ** easy ** ** *** *** **** ****** *********, ** ***** unbelievably ******, ********** *** ******. * **** ** **** **** mentioned **** *** *** ****** ****** **** *********** **********. **** I **** ** **** ********** *** ******** *** - ******** not **** ******* ****** *** ** **. ** ******* ****** also ** ******** - "**** ** ****** ******* ** **** one ** ** *****" *** ******** *** ** ******* ****** similarity ********* *** ***** ****** ** *******. ** **** ** not ********* ** *** ******* ********** ** **% ** **%, cause ** *** ************ ***** ****, **** ***. *** **** get ******* *** ** ******* ****** ******* ******** ***. ** then ***** ******* ** ******** ***** ** ***** **** *** tens ********* ** ****!

*** ***** ** ******** ***** **** ***** ** **** - can **** *** **** ** **** *** **** *** ****. It ** ****** ** ******** ******* *** ****** ******* *** current ******** *** *** *** ** *** *****. ***, ****** can **** ***** * *** ** ****** *** **** ** not ****.

*** * ******: ***** ******** **** ***** **/** *********, *** available. ******* ***** ********* *** ********* ***** ********. ******** ****** on *******, ****** ******** ** ****.

******* * **** ***** **** ***:
****** **** ***-*******-**
****** ******* *.***.*******.*.*, ***** ****: ****-**-**
*** ******* **.*.*.******
***** ******* **.**(**.*.*.******)
********* ******* *(*.*.*(**.*.*))-*(*****)
**** ******** ******* **.*

*******, ****** *** *** ******** ********. *** *******:

*** **** **** ***** **** ***** **** ** ******** **** will *** **** ********* *******

**** ****** ** **** ***** ******* **** *********** ***** ***** any **********. ************* ***, ** *** ***** ******** ******* ***** for **********/*******/*****/**** ** *****/*********.

***** * ***** **** ********* '******** ******* *****' **** ******* performance, ************** '**** *****' *** *** ***** ** ****** ****. Confining ** *** '******** ******* *****' ********* ********** *** **** in ***** *** ******** *** *** ***** ** *** ** used. **** ********?

** ****,

******* ***** ** ********* ** ******** *** ** ********** **. So * ***** '**** *****' *** ***** *** ***** **** system **** **** ****** *** **** *****. ** ******** ** to **** ****** **** ********** ** ** **** *****, *** has *********** ******. ***** ** ** ****** ** ******* ** bubbles *** ** ***** **** ** ** ****** ** *** the ***** ** ****. ****** **** **********, ** *** ***** IVS *******, ****** ** ***** ***** ***** ************ ******** *** it. *** * **** ** *** **** **** ** **** away ** *********** ********.

** **** ** **** *** *** ****** ****** ****** "**" - ********* ***. *** ****** *** **** ** *** ******* of ************ ***** ** *** ********** **** *** ************** ** very ****, ******** ************ *** ** ******** ******** ****...

*.*. ** ** ***** **** * *** *** *** **** hands **** ********* ** ****** ***** *** **** ****** ** unsucesfull. **** ************* *** *** ******** **** *********** *** ******* neural ******** * ** ********* **** ** ** ******** ** make ** **** **** ;-)) ***, *** **** ****** **** system ****** ** **** **** ******** - ************* ** ***** in ** **** ***/*** *****, ***** ***** ****** ****. ** we *** ***** ** ***.

** ******* *** **** ********* ****** ******** ******* ****** **** a *** *** ** ********* ** ********** ***, ****** ** get **** "*******" *** **** *** ******* ******* ****** '**'.

*** ***** *** ** **** ********* ***. ** ******* ************ of **** ******* ** ************ "***** ****".

*** ***** *** ** **** ********* ***. ** ******* ************ of **** ******* ** ************ "***** ****".

*******, * ** ***** **** ****.

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

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

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

** ******** ** ** **** ****** **** ********** ** ** fact *****, *** *** *********** ******.

** *** ********** *** '** **** *****', ** ***** *** have ***** '*********** ******'. *** **** ***** ******, *** ****** is ******* ** **** *** ********* **** *** ******* *** able ** ******* ** ****.

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