Realistic image quality even in dark environments

Issue 8 2022 Surveillance

Low-light conditions are a monitoring challenge for installers and end users. Images taken from scenarios with dark lighting (or after dark) using traditional surveillance cameras are often black and white, fuzzy or heavily pixelated, which is not ideal for backtracking in case of an event.

When choosing the right camera for scenarios with low illumination, you can consider 4K cameras – an industry craze that is gradually becoming a mainstream monitoring solution. In fact, according to a latest report, the 4K video surveillance market size is expected to grow at 9 percent CAGR (compound annual growth rate), which is primarily driven by the increasing demand for public safety and security services, as well as the speedy advancements in 4K technologies and more affordable cameras on the market.


4K in a nutshell

4K cameras have resolution of 3840 x 2160 pixels, which means 8 million plus pixels. In comparison, 4K surveillance cameras have 4-times the number of pixels of 1080P cameras (see illustration), allowing it to produce clearer images with significantly higher resolution. In fact, if you try to compare the image output of 4K cameras to traditional non-HD surveillance cameras, you’ll immediately realise that the significant increase in resolution reflects the difference between ‘ambiguous’ and ‘clear’ details in the image.

The Dahua Full-colour 4K cameras adopt a 1/1.2 inch image sensor (currently Dahua's best low-light IPC sensor) that provides 110 percent pixel size increase compared to conventional 8 MP sensor. What’s more, its F1.0 large aperture can capture light that is more available and the maximum light energy that the sensor can receive is doubled.

AI functions

The Dahua Full-colour 4K camera is packed with AI functions that can accommodate various monitoring needs of users. Perimeter protection accurately detects targets in the scene. SMD 3.0 reduces false alarms and increases the detection distance. AI Schedule allows users to set different AI functions based on their preferred time. Other AI functions include people counting (eight rules) and queue management (four rules).


Credit(s)




Share this article:
Share via emailShare via LinkedInPrint this page



Further reading:

Hikvision launches AcuSeek NVR
Surveillance Products & Solutions AI & Data Analytics
By integrating natural language interaction, Hikvision’s AcuSeek NVR enables precise video and image retrieval within seconds, marking a transformative milestone for the security industry's advance into intelligent and efficient applications.

Read more...
2025 video surveillance market set for improved fortunes
News & Events Surveillance
Novaira Insights has unveiled its latest report, World Market for Video Surveillance Hardware and Software – 2025 Edition, forecasting a healthy growth rate of 8,1% until 2029, excluding China.

Read more...
Dallmeier and Hexagon form a technology partnership
Surveillance
Dallmeier and Hexagon have agreed to form a technology partnership, which will see the two companies combine their expertise to develop integrated security solutions for various application areas, particularly critical infrastructures.

Read more...
Analyse, automate, and optimise logistics processes
neaMetrics Surveillance Transport (Industry) Products & Solutions Logistics (Industry)
In today’s rapidly evolving logistics sector, the pressure to improve process efficiency, optimise resource usage, and ensure seamless security is more intense than ever. Smart, proactive surveillance is no longer a luxury — it is a critical operational necessity.

Read more...
Safer spaces through smart surveillance
NEC XON Surveillance
Advances in facial recognition technology are transforming surveillance from a mere recording tool into an intelligent, integrated system that enhances real-time safety, moving beyond the traditional expansion of CCTV efforts.

Read more...
Next generation of AI-powered video telematics
IoT & Automation Surveillance Transport (Industry)
Webfleet, Bridgestone’s fleet management solution in South Africa, has launched Webfleet Video 2.0, an AI-powered solution designed to enhance fleet safety, security, compliance with local regulations and operational efficiency through real-time video insights.

Read more...
Key design considerations for a control room
Leaderware Editor's Choice Surveillance Training & Education
If you are designing or upgrading a control room, or even reviewing or auditing an existing control room, there are a number of design factors that one would need to consider.

Read more...
Smart cities and the role of video security
Surveillance Integrated Solutions
As cities around the world continue to embrace smart technology, including IoT that not only connects to people, but also the surrounding activity, the integration of advanced video security systems is crucial to ensure safety and efficiency in environments.

Read more...
How intrusion protection helps secure O&G operations
Surveillance Perimeter Security, Alarms & Intruder Detection Industrial (Industry)
For O&G operators in Africa, physical security remains one of the biggest considerations, particularly when it comes to perimeter protection and the ability to mitigate intruder-related incidents.

Read more...
Axis secures the Waterfront
Surveillance Entertainment and Hospitality (Industry) Retail (Industry)
Axis Communications shares insight into its longstanding partnership with the V&A Waterfront, one of Africa’s premier retail and mixed-use precincts, through its latest, updated customer success story.

Read more...










While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd. | All Rights Reserved.