Super Low Light Surveillance Guide

By IPVM Team, Published Aug 01, 2017, 03:10pm EDT

Historically, low light performance of megapixel cameras was terrible, with super slow shutter 'ghosting' a common tradeoff for brighter low light images.

But the introduction of 'super low light' image processing changed this, with drastic increases in camera low light performance not previously possible.

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In this guide, we explain super low light covering:

  • Enhancements in image processing / gain control
  • Advanced digital noise reduction
  • Expansion of cameras with larger imagers
  • Introduction of professional photography sensors to security cameras
  • Image quality relative to conventional cameras, integrated IR and thermal cameras

Super *** ***** ******

** ************, '***** *** light' *** ** *** definition, *** ** ******* used ** ***** ** cameras ***** ******* ******** low ***** ***********, ********** images ** *** ***** levels ***** '*******' ******* cannot, ***** ** *****. Exact ********** **** ** super *** ***** ****** vary, *** ********* **** into *** **********: ******** gain ******* *** ******** digital ***** *********.

Enhanced **** *******

*** ***** *********** ******* of **** ***** *** light ******* ** ************ is ******** ***** ********** / **** *******. **** is * *********** ******* of *** ************ *******, allowing ** ***** **** would ********* ** ********** dark ** ** *******, at *** ******* ** increased ***** *** ****** bitrates.

*** *******, **** ******* ******* / *** for ***** ************ *****, ***** ** * demonstration ** ******** ********* gain ******* ** * camera, **** *** ******* moderately ******* ** ****** gain ******, *** ****** undetectable **** **** ** low:

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'*****' *** ***** ******* use **** / ***** processing **** '*******' *** light ******* *** *** more ************* **** ******* and ********* ***** ********* techniques.

Improved ******* ***** *********

*** ****** ********* **** in ***** *** ***** cameras ** ******** ******* noise ********* (***). **** automatic **** *******, *** is **** ** *********** all ************ *******. *******, many ***** *** ***** models *** **** **** of *********** ***, ***** automatically ******* ***** ** activity ** *** *****.

*** *******, ** *** image *****, *** ****** automatically ******* *** ****** on *** ******* ****** through *** *****. **** avoids ********* ****** **** caused ** **** *** levels, *** **** **** visible *****, **** ****** the *******.

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*** **** ******* ** DNR *** ******* ******, see ********* *** (******* ***** Reduction) *****.

Marketing *****

**** ************* ***** ***** low ***** ****** ** of ****, *** ***** is ** ******* ******** for **** *********** '***** low *****' ***********, *** classification ** **** ** to *** ************. ******* of ****,*********** *********** *** ** drastic.

******* ** **** **** of *********, ********* ***** are ***** *** **** way ** *********** ***** low ***** ****** **** standard *******. ************ ***** vary, *********, *** *** limited **:

~1/3" ******* **** ******

***** *** ***** ******* are **** ******** ******* with '************' ****** *****, in *** ***** ** 1/3" (** */*.*", */*.*", etc.) *** **** ******** imagers / ****** **********. While *** ****** **** may ** *** **** as ***** *** '*****' low ***** *****, *** imagers (*** ********* *** SOC / ********) *** better ** ********** *** image *** ********** **** details ** *** *****.

Larger ******* ***** ********

** *** **** *** years, ** ********, ******* that ******* ******** ***** processing********* ******* **** **** introduced ** *** ******. Instead ** */*" *******, these ******* *** ~*/*" imagers (********* **** ******* resolutions, ** ******** **** often *****). ****** *******, everything **** *****, **** allow **** ***** ** capture / '***' **** light *** ********* ****** deliver ******* ** **** conditions.

** ** *****, *** all ****** ****** ******* are ***** *** *****. With ***, *** / 4K *** ****** ***********, 1/2" ******* ** **** larger *** ******** **** common *** **** ** not ******* '*****' *** light. *** ******** ** imager **** ** ****** by *** ******** ** the ****** ** ******. As * ****** ** practice, ********* ****** ********** cameras (*** ** ******) deliver ************* ***** ***** performance. ****, ** ******, will ****** ****** **** time, **** **** ***** cameras **** **** ********* poor ** *** *****.

Super ***** ****** *******

** ********* ** *** statement ***** ****** ********** cameras *** ********** ***** low ***** *** ******* that *** *********** *******. Security *******, ****** ************ photography ****, **** ** use *** ******* ****** sizes. *** **** *** reasons *** ********** **** and **** ** ******** cameras *** *** ********** lenses. *** ******** ** smaller ****** **** **** greater ********** ******** *** light ******.

** ******* ** *** size ************ ** ***** below ** * *** security *******, *** **** a **** ****** ******* for *********** *** **** for ********, *** ******* with * */*.*" ******, which ** ***** ****** large *** ******** *******:

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******** ******* **** *********** sensors ********* ******* *** best ***** *** ***** performance.

*** **** ********* ** that, **** ***** *********** cousins, **** **** ** be **** ***** *** far **** *********. ***** is ** **** ********** between * **** ******** camera *** * ************ minidome, ******* **** **** difference:

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*** ******* **** ***** installation **** *********, ******** an ******** ******* *** outdoor *** *** ***** the ****** *** **** conspicuous **** ************ *****.

*** ****, ******** ******* with *********** ******* **** to ** * ** 10x **** ********* **** their '******' ****** **** counterparts. ***** *********** ******-***** security ******* ********* **** for ********* ** ******* (with ~$*,***-**,*** *** ******) and *** **** **** more ********* ** *** lens ****, ***** **** to ** ** ***** hundreds ** ******* *** can ** ********* *** top ******* ******.

Image ******* **********

*** ****** ***** **** general *********** ** ***** quality ******* ***** ********** of ******. **** **** these ****** **** ***** from ********* ***** ** different *****, *** *** are ***** ** ~*.***, ranging **** ~**-** ***.

*****, * ************ (***-***** low *****) ***** ***** only ******* ********** ** the *******'* ****, **** his **** ******** **** the ********** ****** **********. By ********, *** */*" super *** ***** ***** clearly ***** *** ******* against *** **********, ****** detection ******, ***** *** 1/2" ***** *** ***** camera ***** ***** ****** details *** ******** *********** and **** ****** ********* not ******* ** ***** models.

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Super *** ***** ******** ** *******

******** ** *** */*" super *** ***** *****, the ****** **** * 35mm ************ ****** ***** color ***********, **** ****** detail, *** **** **** detection. ***** *** ******* can ** **** ** green, *** *** *******'* clothing ** *****/****, *** possible ** *** */*" model. ** ********, *** thermal ****** ***** **** of ***** *******, *** the ******* ** **** easy ** ****** ** even **** ****** ** a *** ***** ****** against *** **** **********.

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Integrated ** *********

*** **** ****** ********** to ***** *** ***** models ** ********** **, as ***** ************ ******** image ******* *** **** low ****, ********** **** low ***** **********.

** **** *****, ********** IR ******** **** ******* than ***** *** *****. For *******, *** *******'* clothing *** ******** *** be **** ** *** comparison *****. *******, ******* from *** *******, ***** integrated ** ****** ** drop ***, ******* ********* by *** ******* *** more *******.

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*******, **** **** *********** of ********** ** ******* varies ******, ********* ** range, ******** *******, *** more. *** **** ******* on ********** ** ******, see ***** ************ *****.

Super *** ***** ******

** *** *** *********** varies ***** ***** *** light *******, **** *** tested ****** ** *******, culminating ** ******** *** ***** **** Camera ********, *********:

Comments (10)

Much helpful guide. Thanks.

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FYI,

Clicking on the link "Infrared IR Surveillance Tutorial" takes you to a page giving this message:

"This report has not been published. Check back later."

 

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Clicking on the link "Infrared IR Surveillance Tutorial" 

This has been fixed, thanks. Link is here

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Integrated IR image seemed better.

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Great and helpful guides. Thank you.....

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They are getting better but will the customer be willing to pay the additional cost.

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The issues with sensor image size is interesting as I'm an amateur astronomer and CCD astronomy has taken off such that no one uses film anymore. Hence the interest in smaller sized pixels are used.

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Tim, thanks! I am curious. Any specific models of telescopes or cameras being used for 'CCD astronomy'?

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Looks like CCDs are often used because of sensitivity/low noise, but CMOS is now coming on strong:

While CCDs remain the most popular technology for ground-based astronomy, image sensors based on traditional CMOS technology now offer a viable alternative. “CMOS image sensors have not generally been suitable for astronomy because they are front illuminated, and are both less sensitive and more noisy than CCDs,” says McClure. “But more advanced CMOS imaging chips are now emerging that rival the performance of CCD and EMCCDs, while also overcoming the common limitations of these technologies.”

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Edit: Article is a sponsored article.

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This is a good place to start as this website has lots of CCD eye candy;

CCD Cameras, CMOS Cameras for Astrophotography | Buy Advanced Astronomy Telescope Cameras at High Point Scientific

So many CCD choices and filter wheels and autoguiders to choose from, oh my!

NOW this is a telescope with the CCD sensor builtin, very hitech, and everyone in the community is abuzz...lol

Unistellar's eVscope 2 & eQuinox Telescopes | The Universe Awaits

The information about the sensors in these scopes is here;

IMX224 - Sony Semiconductor Solutions Corporation | CMOS Image Sensor

https://www.sony-semicon.co.jp/products/common/pdf/IMX347LQR_Flyer.pdf

You have to look but I heard there's another company on the horizon that will have a similar product.

NOTE: I HAVE NO CONNECTIONS WITH VENDORS

Now, back to the readings...

Enjoy!

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