SecurityWorldMarket
Advert

See in the dark with varied imaging technologies

The need for crisp and clear video images in low-light environments always exists. The data confirms it: when committing crimes like burglary and vehicle theft, criminals definitely prefer to hide under the cover of darkness. So to both prevent and tackle crime, it’s vital to have security cameras that can record quality, discernible footage in a variety of light conditions, especially in near total darkness.

For years, improvements in sensor technology and algorithms to enhance the image have helped deliver better surveillance in low-light conditions. Besides IR illumination, other availabilities include the addition of visible light in the vicinity of the field of view, the use of image intensifiers, low-light lenses, and thermal cameras. In this blog, we talk you through different types of cameras – including some of the latest Hikvision technologies – to help you understand the workarounds for low-light and pitch-black monitoring.

See in low light

Low light means anything down to 0.002 Lux – that’s the same conditions as a moonless, clear night. Many surveillance cameras built today for low-light performance can deliver usable and high-quality images by applying better optics and advanced sensors. To put it simply, the lens used thereby gets as much light as possible onto the image sensor. In this way, Hikvision has two options.

The first is the Hikvision ColorVu cameras, which is ideal for monitoring at a closer range. With an F1.0 super aperture and an advanced sensor, these intelligent eyes pull in four times the light of a conventional camera, for daylight-like color images in low-light conditions. Should light levels fall to zero, the built-in warm supplemental lighting ensures the camera can still capture vivid color images within up-to 40 meters range.

Watch a video to see how Hikvision ColorVu helps to tell the true stories.

If you need low-light security monitoring over larger distances, then Hikvision DarkFighter camera range are ideal. Featuring a large-sized progressive scan CMOS sensor and a DarkEye SLA lens with a super large F0.95 aperture, DarkFighter cameras can deliver excellent HD high color images down to 0.002 Lux.

The camera’s increased field of view allows security operatives to pan around and cover a large area of attention, particularly ideal for city streets monitoring, and open environments like ports, squares, parking lots, etc.

See in total darkness

When there is zero ambient light, there is one industry-standard option: Infra-Red Cameras.

Security camera manufacturers have created true day/night cameras that add IR illuminators to capture monochrome images when the light level falls to zero lux. Specifically, IR illuminators emit infrared light that is reflected by objects and is further collected by the camera sensor to produce a sharp, black and white image.

Today, the vast majority of cameras on the market come with built-in IR illuminators. But if you want to take things a step further, it’s worth considering the Hikvision DarkFighterX camera range. Based on the human eye, these cameras use a single lens featuring two sensors: one for IR imaging – ensures that video footage is bright and sharp, and the other for visible light – allows video images to be reproduced in full and vivid color. Both signals work together to create a single, bright, full-color image in light conditions as low as 0.0005 Lux. In zero light, the cameras enable the mixed supplemental lighting to render color images.

Watch Video (below) to look at  the DarkFighterX Innovations

See in all weather conditions

But what if it’s pitch black, and your view is obscured – by rain, fog or even thick foliage? If you’re trying to see in the most challenging of conditions, there’s one trusty option: Thermal Cameras.

Rather than using light, thermal cameras measure heat – or thermal radiation – to generate images from their field of view. In this way, the rendered image is far less affected by rain, snow, fog, smog or indeed anything that can obscure light.

The way thermal cameras “see” allows them to pick up movements with high accuracy, giving security operatives eyes on objects, vehicles and intruders. Combined with Video Content Analysis (VCA) technology, thermal cameras can offer a range of perimeter security solutions, such as line-crossing detection and intrusion detection. This means they can easily detect intruders moving through bushes or under the cover of complete darkness.

Hikvision offers a range of cutting-edge thermal cameras, including those that deliver the best of both worlds: Bi-Spectrum Cameras, which combine thermal and optical images to create a hybrid image, making it easier to find hidden objects and document unusual events.

Find out more

To learn more about how Hikvision’s state-of-the-art cameras can help you see in the dark, discover our complete range of low-light and thermal imaging cameras.

About Hikvision

Hikvision is a world leading provider of security products and solutions. Featuring an extensive and highly skilled R&D workforce, Hikvision manufactures a full suite of comprehensive products and solutions for a broad range of vertical markets. In addition to the security industry, Hikvision extends its reach to smart home tech, industrial automation, and automotive electronics industries to achieve its long-term vision. Hikvision products also provide powerful business intelligence for end users, which can enable more efficient operations and greater commercial success. Committed to the utmost quality and safety of its products, Hikvision encourages partners to take advantage of the many cybersecurity resources Hikvision offers, including the Hikvision Cybersecurity Centre. For more information, please visit us at www.hikvision.com.


Product Suppliers
Back to top