Testing Avigilon's Image Enhancement

Author: Ethan Ace, Published on May 27, 2013

Typically, VMS software displays video 'as is'. While there may be basic brightness, contrast and saturation controls, those require manual adjustment with significant tradeoffs.

By contrast, Avigilon's VMS has an interesting feature called 'Display Adjustments' that automatically adjusts the quality of video displayed. This is what the control looks like:

That noted, even without pulling this up, the software continuously re-adjusts on its own. Additionally, it works on any camera connected to Avigilon's VMS, not just their own.

Since this feature is rare, we wanted to understand what practical benefit it delivered so we did tests with a variety of cameras including budget, low light optimized, WDR, mid range and thermal to better understand when and how much of a difference this makes.

*********, *** ******** ******** ***** '** **'. ***** ***** *** be ***** **********, ******** *** ********** ********, ***** ******* ****** adjustment **** *********** *********.

** ********, ********'* *** *** ** *********** ******* ****** '******* Adjustments' **** ************* ******* *** ******* ** ***** *********. **** is **** *** ******* ***** ****:

**** *****, **** ******* ******* **** **, *** ******** ************ re-adjusts ** *** ***. ************, ** ***** ** *** ****** connected ** ********'* ***, *** **** ***** ***.

***** **** ******* ** ****, ** ****** ** ********** **** practical ******* ** ********* ** ** *** ***** **** * variety ** ******* ********* ******, *** ***** *********, ***, *** range *** ******* ** ****** ********** **** *** *** **** of * ********** **** *****.

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

Key ********

*** ********* ******* ********** ********* ************ ** * **** ******* of *******, ********* ***** ***** **** ***** *.***. **** ** a ****** *** *******.

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

  • ********'* ***** ********** *** *** ******* ****** ** ******* ***** perform ****** ** *** ***** ******. ** *** *****, ***** adjustment *** *** ********** ******* ********* ** ****** *** ***.
  • **** ********* *******, *** ***** *********** ************* ************ *****, ** some *********, ********** ******** *** ******* ******* ********* ** *** region ***** ****** **.
  • ********** ** **** ****** **** ********* **** ***** *** ***** 'enhanced' ******* (*.*.,**** ***********,***** *********, ***.), ** **** ******** ****** ****** ******, **** **** room *** **********.
  • ** ****** *** ******, ******* *** ******. ****** *** ** slightly ******** ** ***** ** *****, *** ** ***** **** adjustment **** *** **** ** ************, *********** ********* **** *******. 
  • ******* ****** *********** ** *** ******, **** **** **** **********, making **** ******* ****** ** *** ** ****.
  • ***** ******* *******, ** ***** ***** ********** **** **** **** and **** ******* ****** ** ******. *******, ***** *** **** loss ** **** ******, ****** **** ** *** ********* *** goal ** ******* *******.

****: ** ******** *** **** ******'* ***** ******* ** ********'* VMS ****** *** ******'* *** *** ******* ******* (*** *** 'native' *******) *** ***** ***** (**** ** *****). ***** *** camera *** ******* *** ***** ***** ********* *** **** ***** quality, ********'* ********* ********.

Display ********** ** ******

** **** **********, ** **** ******** ** ********'* ***** ********** and *** ******* ** ********* *******. ** ******* **** ******'* histogram, *** *********** *** ******* ** ***** ********** *** ***** and ***** ****** ** ******** ******, ******* ***** *** *** greatest ******.

Follows ******* ****

***** ********** ******* ******* ****, ** **** *** ******* ******* of *** ***** ** ***** **** ******* ** *** *********, with ********** ********* ***********. ****** ***** ** *** ********** *****, this ******* ** ****** ************ ** *** ********* *******. ***** a ****** **** *****-** **, **** ******* ** *** ****** scene, *** ***'* ******* ***** ******* ** ** ****** *** and **********:

*******, ******* ** ** **** *** *****, ** *** *** that *** ***** ** ******** ***********, ******* * **** ******** histogram, ****** *** ***** ****** ******* (*** ********** ****** ************* for *******):

***** *** **** ******** **-****** **** ** **** ******* *** ***** ********** *** ********** (**************** ******).

Low ***** ***********

** ***** ******** *** **** ****** ** *** ***** ******, though ***** ******* **** ********* ** ******* **** ********** *** light ******* (*** ** ****** **** ***/** **** ********* *******). Since ***** *** ***** ******* ******* * **** ****** ****** image, ***** ** **** ******. ****** ****** ***** **** **********, as **** **** *** ** ******* ** ******* ******** ** the *****. **** ********** ************ ***** *******:

 

*** ******* **********, ** **** *** **** ** *******, *** low **** ***** ****, *** *** **** *** ***** *** low ***** ***********. **** *** ***** **** ******, ********'* ***** adjustments ******* * **** ******** *****, **** ******* **** ****** visible. **** *** *** *********** ********* ** ********* ******, ** the ***** ******* **********, *** *** ******* **************. *******, ** is **** ****** *** *********.

 

******* ** *** **** ***** ** ********, ** *** *** it ** ****** ******** ** *** *** *********, ****** **** pronounced *************, ******* ****** ******/*****:

** ********, *** *********** ***** ***** *** *** ***** ****** are *******. *****, *** ***** ** ********, ****** ****** ** reduced. **** *** ** ** ********* *** ** ***** *** camera *** ********* ****, *** ** ******* **** ******* *** identification.

Evenly *** ***********

*****, ** ****** *** ****** **** ****** ** **** *****, between ***-*** **. ******** ******** * ********** ******** *****, ****** this **** *** ********* ** ** ******** ** *******. ********'* gamma *** *****/***** ***** ********** ******* ** ****** ************, ***** obscures ****** ** *** ***** *** *******'* ****.

****** ***** ** *** ****-*** ******, ** **** *****, ***** is ****** ********** ** ***** ** **********, *** ** *** blurring ******* ** *** ****** *****, ********* ** * ****** loss ** ******.

Wide ******* *****

** ****** *** **** * *** *** ******, ** ****, to *** ** ***** ***** ********** ******** ******** **** ******* performance. *** ***** ********** ****** *** * ******* ******* ******* as *** *** ***** ** ******* ***** ********** ** *** camera. **** *** ** **** ** *** ***** ***** ** a **** ***** ******* ********** *** *****, ***** ***** ** be ****** ** ***** ********** ********* ** *** ***, ** noise ******** ** *** *****.

**** * ******* ** ***** ** *** *****, ** *** see **** *** ******** * ****** *********** ** *** ***********. The ***** ** ******* *** ******** ****** ** **** ** lower *****. 

 

Outdoor ***********

** ***** *** ******* ** *** ******* ******* ****** ** see **** ****** *** ***, ** ****.

***** ******

*****, ** ****** **** * ******* ********** ***** ******. ***** was ****** ********** ******* *** ***.

** **** ****** ***** *********** **** ** ***** ******** ********** camera. ****** **** ******** ***** ** ***, *** ** ***** extra ****** *** ********.

Thermal ****** **********

*******, ** ****** *** **** * ******* ****** ** *** if ***** **** *** *********** ** **********. ******, ******** ********* visibilty ** **** ******* ** *** ****, **** ** *** plant ** *** ******, *** ******* *** ***** ** ***** objects ****** ******* *** **********. **** *** ********* ** * positive ****** ** ********* **** ***** ******* *******, ***** **** contrast ** ***. *******, *** ***** *** ******* *** ******* became ****** **** ** ***** ** *** *** ** ************, and *** ***** ** *** **** **** **** *******. **** could **** ** **** ********* ** ******** ******* ** ****** or ***** ** *** *****, *** *******.

Comments (15)

*. *** '******* **********' ** ****** ***? ** ** *** (or ***** **), ***** *** ********* **** ******* ** ** in *** *****, ***** ** *** ******* *****?

*. ***** * ******* ******* **** **** ****** *********** ******* like **** ** *.***?

*. *** **** '****** **********' ****** ****** **** ***-*** ****** cameras *** ********?

*'** *** ***** ****** *** ******** *********. *** ***** ** clarify - **** ** *** **** ** '****** *********** *******'?

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

* ***** *********** ******* **** ******* ******* **** ***** **** MPEG, ** *******, *.***. * ** ******** *** ****** ***** JPEG2000?

***********, **** *******:

*. ** ***'* ******** ** ****** *** (** ****** ********), but *** ***** *** ***** ***** *** *** *** **** and ***** ***** *** *** *** **, ***** ***** *********** be *** **** *****.

*. ******* ****** **** ***% *.***, *** ****** *** ***-********. To ** **********, *** ******* ***** **** *** ** ******** bullet ******. **** *** *** **** ***.

*. **** ********. * *****'* ******** ****** **, *** * imagine ** *** ** ******* ** *** **** ******* **** above (**** ** *** ******* ***). **** ****** *** * VGA ** ******. **'* *** ***** ** **** *** **** of ***** ****** (** **** ** ***, ******), *** ** may *** *** ******** * *** *** ******** ********** **** so ********.

** *******, **** (** ***) ** ***** ***** **** **** using *.*** ******* ********* **** **** *** ******** *******. **** is *********** ** ********, ****** * ****** *** **** ********:)

***** *** ****** *** ******* ** '******* **********' ** ** better ** ***** (** ****** ** ***) ***** ******** ** MJPEG?

*'* ***** *** ******* ******'* ****** ** ***. * **** changed * ****** ******* ** *****, *** ***** *** ** noticeable **********.

**** ******** ** *** *** *** *** ********* ** ********. NICE *** *** **** ******* ********* ***** ***** ****.* *******. It ** ****** ****** ********* ********* ** *** *** ** is ******** ** ** ****** **** *** **** ********** ***** software.

****** *** *******. ****'* ****** ************* ** ****'* *** **************'* *********** **** ** **.

***, ** *** *** ***** ** *** '*********' ** ********. The ********* **** ****, ** **********, ** **** ** *** very ******* ************. ***********, ********'* ****** ** ******** **** ** the ****** **** *******.

** ****** *** ***** ***** ** ***** **** **** ******* features, ****** *****.

*****, *** *** ****** *** "*******" ** *** ***** **********/******** on ****** **** ******* ***** ******? ** ***** ** ** that *** * ****** ** ******* **** ** ********* ** Avigilon ****** **** ****. ************, * ****** ******* **** ** a ****** ***** ******* ******* ******* ***** ********** ** *** dealer's ***** ***** ******* ******** *** ****** *****.

*'* ******** *** **** ********** ** **** ****** **** ** the **** ** *******? *** ********* ******'* **** *** *** enhancing *** ****** ****** ****** ** ****. ****** ** **** with *** *** ****** ***** ****.

* ******* * *** * ******* *** ******* ********* ******* at ****. * *** ******* ** ** * ***** ** wrong, *** **** ** **** ** ****** ****. ** ********* wasn't ******* ******* ** ******** ** ***** ******** ****.

**** *** ** **** ****** **** ** ***** ******** **** any *** **** **** ***** ***** ******* ******** ** * few *** *******. *** ******** ***** *********** *** ****** ***** (which **** *** ******** - *** ***'* *** **** ***'* do ****?). **** **** **** * ***** ********* **** **** certainly ****** *** ***** ****** ** **** **** ***. **** the ***** ********** ** **** ** **** *** ****** **** is ******.

*****, ***, **'* ****** ****, *** **** *** ****** / manipulate *** ******** *****.

*** ** **** **** ********* **** **** ***** ***** ***** and ****** **.

** ** ********** ** ******* **** ******* ******** ******* ** they *** ***** **** *** *******, *******, *** ******* ***. It's ********* ** **** **** ********* ******* ** *** ***** marketing, *** *** **** **** ** ** **** ********** ** dominate *** ******. ****** **** ******** ** *** ** ****? Sorry ** *****'* ******* * ****** ** ****. * ***** all *** ********* ****** ** ****. ***. *****'* *** **** reasons *** **** *** ***.

* ***** *** ****** **** **** ********* *** ******* **** most ** ********'* ******* *** ***** **** **** (*** **** is ****** **** ******* ******** ******* ****** ** ***** ****** against ****). ****** *****, ** *** *** * ******, *** marketing **** ***** **** **** :)

****'* ************ / ******* ***** ******** ******* / **-*******.

********* ************ ** * **** ****. **** **** **** ** well ** **** ** ***** *******. *'* **** ** *** a ******** ******** ***** ** **** ** **** *** **** where *** **** ******* ***** *** ****** *** *** **** some *******.

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