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CCTV Raising resolutions Upgrading a camera installation to a higher resolution has a number of benefits – not all of them security related, but we’re still some way off from 4K being the norm Over the past few years one of the major drivers behind the sales of surveillance cameras has been the rise in potential resolutions for the end user. This was seen as the next reason to upgrade once the move from analogue to IP had taken place at a site. Initially there was some concern over the cost of switching to higher resolutions as in some cases a step to 4K (UHD) meant that new monitors were required in addition to making sure that the network infrastructure could cope with the demands of handling much more data. Today we have two distinct market areas for surveillance; the professional market and the DIY. With the rise in the development of cute little cameras (many of which are HD) for the home automation market, users are now more surrounded by high quality imaging than ever before – and if you factor in the capabilities of the camera function on their mobile phones it’s no surprise that poor quality CCTV footage from a professionally installed system is not something that customers expect to see. However despite the fact that just about all of the major camera manufacturers now offer 4K units the average resolution of CCTV cameras in the UK these days is still below this level. The installers I speak to generally inform me that the most common resolution level they are working on is HD - for either first install or upgrades. The 4K units are great for zooming in, facial recognition and wide area coverage etc but for the average customer it is a case of having more HD cameras to cover a view rather than fewer cameras at higher res that appears to be the current norm. I predicted back in the January edition (in my thoughts for the coming year feature) that there will be no need to move beyond 4K for camera developers in2017, instead they will focus on better day/night capabilities, H.265 compression, lag reduction, easier installation features and analytics innovations including software features like accurate smoke detection etc rather than racing on to higher resolutions. The higher the resolution of the camera the more information can be gleaned from it, so in applications where security is not the only function of the cameras, say in a large shopping area where customer behaviour, heat mapping and other business tools can help designers and sales teams, a high resolution camera is essential. Of course the same stores would also benefit from the higher resolutions for recognition, evidence etc – remember the grainy old images that Crimewatch used to show us? All in the past, or they could be at least. Whilst current demand for 4K from the video surveillance market remains fairly low as HD is still marching forward, the benefits for the security industry are evident. With a resolution of 3840 x 2160, 4K network cameras can deliver approximately 8 megapixel resolution images. This upgrade in image quality and resolution will mean clearer images on a live stream, better clarity of zoom images and a wider field of vision, which can drastically improve identification of a an individual or car number plates, for example. In addition, 4K used in a 360º panoramic dome camera can be vital in reducing the number of CCTV cameras an organisation requires, significantly impacting overall security costs. The benefits of 4K for the security industry are undoubted; however, a number of barriers to adoption remain, limiting the demand for 4K network camera capabilities in the security industry at present. The primary concern most Key drivers for 4K adoption are broadcast, consumer TV and media. 4K CCTV is still very much a growing format The installers I speak to generally inform me that the most common resolution level they are working on is HD - for either first install or upgrades www.psimagazine.co.uk 35
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