What is WDR?

12 Nov 2018

Uri Guterman, Head of Product & Marketing for Hanwha Techwin Europe, shines a light on Wide Dynamic Range and what benefits it brings to video surveillance systems.

The latest generation of HD cameras have raised end-users’ expectations about the quality of images they can expect to capture. The superb ‘need to be seen to be believed’ images delivered by some HD cameras, are now way beyond what could have been imagined just a few years ago.

However, the quality of these images can be significantly affected by varying lighting conditions that may exist in a camera’s field of view. Some parts of an image can be very bright, while other sections are extremely dark. This scenario is quite typical in office reception areas and retail store fronts where sunlight shining in through windows differs greatly in its intensity to the internal lighting. The extent of this difference in the lighting levels is described as the dynamic range.

This is why you are more than likely to see Wide Dynamic Range (WDR) listed among the key features offered by most of today’s cameras. WDR is intended to balance out lighting differences and cameras may use one or other of two ways to achieve this. The first is to take samples of the pixels which make up an image and then use the processing power of a camera’s chipset to automatically make the changes necessary to deliver an image where all areas can be clearly seen.

The second method involves capturing in quick time more than one version of the same image with each at different exposure levels. Almost all cameras which are able to offer WDR do so by capturing just one underexposed and one overexposed frame of the same scene and these are simultaneously processed to produce one optimised image.

Wisenet X 2 megapixel cameras from Hanwha Techwin have taken this a stage further. Their advanced form of WDR uses 4 frames to create a more natural image at up to 150dB and at 30 images per second. It also incorporates some innovative technology that removes the blurring which can occur when conventional WDR is in use. What has made this possible is the massive processing power of the chipset which is at the heart of the Wisenet X camera models.

See Wisenet’s World’s Best WDR in action

Whilst WDR may only be one of many features listed on a camera’s specification sheet, the contribution it can make to the effectiveness of a video surveillance system should not be underestimated. Indeed, any form of WDR will deliver some benefit, but if you are intending to locate cameras in extremely varying lighting conditions, it will always be wise to take a very close look at what the manufacturer claims it can deliver. Never hesitate to ask for a demonstration if you have any doubts.

Heriot House
Heriot Road
KT16 9DT
Chertsey, Surrey
United Kingdom

Strandudden Gated Community
Product News

Strandudden Gated Community

Read more

Wisenet cameras help keep rail improvements on track
Product News

Wisenet cameras help keep rail improvements on track

Read more

Wisenet cameras help create safe environment at mental health units
Product News

Wisenet cameras help create safe environment at mental health units

Read more

Hanwha Techwin introduces Stainless Steel Wisenet X Cameras
Product News

Hanwha Techwin introduces Stainless Steel Wisenet X Cameras

Read more

Hanwha Techwin introduces Wisenet T Network Positioning Camera
Product News

Hanwha Techwin introduces Wisenet T Network Positioning Camera

Read more

A.I. Tech Business Intelligence Technology Sets the Benchmark
Product News

A.I. Tech Business Intelligence Technology Sets the Benchmark

Read more

Hanwha Techwin Europe Re-organise Product Management and Marketing Functions
Product News

Hanwha Techwin Europe Re-organise Product Management and Marketing Functions

Read more

Hanwha Techwin introduce Wisenet P two channel  multi-directional camera
Product News

Hanwha Techwin introduce Wisenet P two channel multi-directional camera

Read more

Hanwha Techwin introduces compact Wisenet Transport Solution
Product News

Hanwha Techwin introduces compact Wisenet Transport Solution

Read more

Hanwha Techwin introduce Wisenet Biometrics & Retail Solutions
Product News

Hanwha Techwin introduce Wisenet Biometrics & Retail Solutions

Hanwha Techwin and analytic specialists A.I Tech, have jointly engineered biometrics and retail solutions to enable small retail chains, as well as small outlets such as convenience stores, newsagents and petrol stations, to gain a greater understanding of the type and numbers of people who visit their stores.

Read more

Hanwha Techwin Introduce New Wisenet VGA Thermal Cameras
Product News

Hanwha Techwin Introduce New Wisenet VGA Thermal Cameras

The Wisenet range now offers even greater flexibility and choice with the introduction of new VGA resolution thermal cameras.

Read more

Hanwha Techwin launches Wisenet Intrusion Detection Solutions
Product News

Hanwha Techwin launches Wisenet Intrusion Detection Solutions

Read more

Hanwha Techwin launch space saving compact H.265 Wisenet dome cameras
Product News

Hanwha Techwin launch space saving compact H.265 Wisenet dome cameras

Read more

Hanwha Techwin launches Wisenet Group ANPR cameras for small site management
Product News

Hanwha Techwin launches Wisenet Group ANPR cameras for small site management

Read more

Wisenet WAVE VMS servers supported by BCDVideo
Product News

Wisenet WAVE VMS servers supported by BCDVideo

Read more

Wisenet cameras help keep Istanbul ferry passengers safe
Product News

Wisenet cameras help keep Istanbul ferry passengers safe

Read more

Spotlight on entertainment industry lighting & video solution
Product News

Spotlight on entertainment industry lighting & video solution

Read more

Hanwha Techwin Wisenet Wins iF Design Awards
Product News

Hanwha Techwin Wisenet Wins iF Design Awards

Winning awards for two consecutive years, Hanwha Techwin has demonstrated its global design competitiveness

Read more

Hanwha Techwin Europe  Announces Pan-European Marketing & Training Alliance With ADI Global Distribution
Product News

Hanwha Techwin Europe Announces Pan-European Marketing & Training Alliance With ADI Global Distribution

A joint initiative to promote benefits of Wisenet video surveillance solutions

Read more

Introducing Wisenet Retail Intelligence Solutions
Product News

Introducing Wisenet Retail Intelligence Solutions

The long standing technology partnership between Hanwha Techwin and Facit Data Systems has resulted in selected Wisenet cameras being able to take full advantage of Facit’s powerful Calculus server based intelligent retail video analytics software, to deliver a new generation of Retail Intelligence solutions.

Read more

NBM Technology Solutions to support Wisenet video surveillance solutions
Product News

NBM Technology Solutions to support Wisenet video surveillance solutions

Read more

Hanwha Techwin announces 2018 business plan with 5 core values
Product News

Hanwha Techwin announces 2018 business plan with 5 core values

  • Stronger solutions for specific vertical markets and optimised storage device line-up

  • ‘WE MOVE with trust’ in our valued customers
  • Read more

    Hanwha Techwin launches new VMS brand Wisenet WAVE is simple to set up & easy to use
    Product News

    Hanwha Techwin launches new VMS brand Wisenet WAVE is simple to set up & easy to use

    Read more

    Introducing Hanwha Techwin Intelligent Traffic Management Solutions
    Product News

    Introducing Hanwha Techwin Intelligent Traffic Management Solutions

    Read more

    Hanwha Techwin Introduces Wisenet AID to Keep Traffic Moving
    Product News

    Hanwha Techwin Introduces Wisenet AID to Keep Traffic Moving

    Read more

    Hanwha Techwin and TDSi technology partnership enhances the value of access control and video surveillance solutions
    Product News

    Hanwha Techwin and TDSi technology partnership enhances the value of access control and video surveillance solutions

    Video surveillance specialists Hanwha Techwin and access control experts TDSi, have successfully integrated Wisenet SSM video management software (VMS) with the EXgarde® PRO Access Management PC software application.

    Read more

    Kocaeli Metropolitan Municipality
    Product News

    Kocaeli Metropolitan Municipality

    Over 1,800 video surveillance cameras supplied by Hanwha Techwin have been installed to help protect local authority and government buildings located throughout the Kocaeli Metropolitan Municipality in Turkey.

    Read more

    List your business for free

    Create a business listing on the UK's leading security and fire directory

    Get the IFSEC Global newsletter

    The latest security and fire news, trends and insights