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The extra detail of 4K makes it a powerful tool for the unique requirements of video security in a modern airport environment. With its new generation of 4K networked surveillance cameras, Sony has successfully addressed the issues of moving to higher-definition monitoring in critical transportation environments – including all-important sensitivity and network bandwidth challenges.
Maximising awareness, inside and airside
A modern airport can be likened to a small city – and the monitoring of such a large, complex space is no easy task. With a real estate that may stretch over tens of square kilometres, it’s a formidable undertaking to deploy and manage a video surveillance solution in this uniquely sprawling environment.
By their nature, airports present a wide spectrum of risk factors from a security point of view. As well as ensuring the everyday safety of people, planes and property, there’s the need for constant vigilance in the face of passenger emergencies, service disruption and potential terrorist activity. This presents a huge challenge with tens of thousands of people and anonymous items of luggage passing through a busy terminal each day.
Airside, there are kilometres of perimeter fences, gates, runways and aprons that must be monitored around the clock, frequently in challenging lighting conditions. Identifying an unauthorised individual straying onto a remote taxiway is difficult when they’re hundreds of metres from the nearest camera.
Inside the terminal, there’s a complex maze of interconnected walkways, security and retail areas. Even the relatively controlled conditions of an indoor passenger concourse present challenges of their own. Direct sunlight flooding through a large expanse of glass means that cameras must accommodate a huge range of lighting levels. What’s more, the sheer size of modern airports – and the number of networked security cameras needed to provide comprehensive coverage – means there are inevitably huge volumes of data to route, store and manage.
Sony 4K delivers more detail
Drawing on decades of experience in professional broadcasting and digital imaging, Sony has created a new generation of 4K video security solutions ideally suited to all-weather monitoring at airports, railway stations and other large transportation hubs.
4K video surveillance can help airport operators observe, interpret and respond instantly to a wide spectrum of 24/7 threats, from unattended luggage to unauthorised intruders.
The extra resolution provided by 4K presents obvious attractions in a modern airport environment. With four times the pixel count of Full HD, a single 4K camera like Sony’s SNC-VM772R captures a huge amount of visual detail, allowing more positive identification of faces and unattended objects. Assisted by the camera’s high-quality lens, the SNC-VM772R lets operators ‘see’ several times further away than conventional analogue CCTV cameras. This makes it ideal for monitoring large spaces, whether it’s a passenger lounge or a distant taxiway far from the terminal building.
The higher resolution of 4K is also invaluable for monitoring small movements that an ordinary CCTV camera can easily miss. In the confined space of a currency exchange bureau or the counter in a busy retail store, 4K provides a powerful tool for detecting fraudulent activity.
Capturing a close-up view with a conventional box camera means zooming in temporarily to magnify a particular area of interest, losing wide-area situational awareness in the process. There are no such limitations with the SNC-VM772R that can stream a high resolution wide-area view of the whole scene, while simultaneously ‘chasing’ multiple moving subjects with a close-up cropped view of each. A single 4K camera can thus cover the same area as several lower-resolution fixed cameras. This provides obvious benefits in terms of hardware, installation and operating costs at a large airport.
Maintaining all-important sensitivity
The design of security cameras has seen a steady evolution in terms of resolution – originally from Standard Definition to HD, and now from HD to 4K. But with each advance in resolution, manufacturers have faced the parallel change of maintaining sensitivity. As pixel counts rise, sensitivity is typically compromised as the size of each photo-receptive element on the sensor shrinks. This isn’t welcome for any kind of critical security application, not least all-weather day/night monitoring at an airport.
With the SNC-VM772R, however, the minidome camera is equipped with a large, highly sensitive 1.0-type back-illuminated Exmor R™ CMOS image sensor that’s derived from our professional video and still cameras. Coupled with high-speed image processor, this allows the camera to capture detail-packed 4K/30 fps video footage at illumination levels as low as 0.06 lx, or near-total darkness.
Efficient bandwidth management
Until now, the extra bandwidth requirements of 4K have been a deterrent to manufacturers and installers. With 4x the raw bit-rate of Full HD, 4K puts far greater demands on network & server capacity.
The SNC-VM772R efficiently assigns video resources where they’re most needed, reducing video bandwidth without sacrificing a clear view of crucial details. Up to eight specific regions of interest – like doorways or busy passenger areas – are monitored with 4K-native resolution. Similarly, less relevant parts of the scene – like the sky or a distant building on the horizon – can be encoded at lower bit-rates using a high data compression ratio. This strategy significantly reduces network bandwidth and storage requirements without compromising operational efficiency.
4K represents an ideal solution to the challenges of video surveillance at airports of any size. With Sony’s innovative SNC-VM772R, operators can benefit from the extra detail and situational awareness that 4K delivers – without the compromises that limit the appeal of other 4K solutions in the mission-critical surroundings of a modern transport hub.
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