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VIRTUALISATION Digital video surveillance cuts campus crime
VIRTUALISATION Digital video surveillance cuts campus crime | Digital video surveillance cuts campus crime |
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| by Stephen Withers | |
| Friday, 28 August 2009 | |
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So far, around 300 cameras have been deployed, covering building entry and exit points, general areas, and high-value assets such as computer rooms. The plan is to extend the system to 500 cameras with 10 recording servers and some 70T of storage (which will allow recordings to be kept for four weeks). The installation of cameras is a mandatory part of any new building development or refurbishment. According to Chris Goetze, IT security officer at Swinburne, the university's universal deployment of Gigabit Ethernet with Power over Ethernet makes installing new cameras quick and easy. And the campus wireless network can be used when a camera is temporarily or urgently needed at a location without a convenient network point. It only takes five minutes to configure XProtect to use a new camera, he explained. The video system currently consumes around 10% of the 10Gbps backbone network. If it becomes necessary to conserve bandwidth, the cameras can be configured to use different codecs or framerates. Swinburn currently uses Motion JPEG at the native frame rate and image size of each camera, which typically means 14Kbps - more for the high-definition cameras. Motion detection is used to reduce the storage requirement - there's no need to store consecutive frames showing exactly the same image. But who has access to the images? See page 2. |
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