Advanced Research
& Technology Ltd
NetWatch
Surveillance Products
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Motion Image Separation
Technology |
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The picture shows a soldier in combat dress, moving under
cover down a wooded hillside. The MIST system highlights his position, the route
he has taken, the 'Virtual Tripwire' he is about to cross and the point at
which he will cross the tripwire if he maintains his present course. |
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Video surveillance system operators have a hard time when assessing the vast array of data presented by video screens. So much information requires constant vigilance to detect transgressions, yet the very act of concentrating on video screens can produce lethargy and boredom in a relatively short time. The objectives of Moving Image Separation Technology is to provide a means of giving reliable alert information to security operatives when a pre-defined set of video events are detected. The events are initially monitored over normal security cameras or thermal image cameras. The video images from these cameras are then processed by the Moving Image Separation Technology, and, when pre-defined moving image rules met, raise an alert condition to bring the operators attention to the images in question. The system provides a dual benefit to users. By providing a 100% time monitoring of chosen locations, it reduces the chance that operators may miss a security breach, as they usually have more than one image to monitor, and attention has to be shared. Therefore, the system is more reliable. Secondly, by reducing the fatigue caused by concentration on what is usually a monotonous task, operators can take on a wider scope of surveillance. Motion Image Separation Technology, developed by AR&T, detects intruders under all weather conditions on land, sea and air. Using thermal imaging cameras, and new image-processing techniques, the system alerts operators when warm objects, of pre-defined sizes, enter protected areas. |
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This is the MIST interpretation of the image. All moving pixel clusters are tracked, the red line is a ‘virtual trip wire’. An alarm will be generated when the dog crosses the line. The lower red dot on the line shows the predicted crossing point. |
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A single MIST detector can provide reliable 24 hour detection of targets at ranges of up to 30kM. Filters can be employed to improve clutter rejection these include; target temperature, target size and target speed. High order rules include; Virtual Trip Wires (VTW), Virtual Cages (VTG) and Virtual Warning Zones (VWZ) all of which can be drawn into the scene using interactive tools. Tracked targets leave paths from where they were classified to their current position. Used in conjunction with the NetWatch CCTV product range, MIST can activate normal vision (fixed or PTZ) cameras to home in on and record the VTW activation. The MIST unit will record pre and post alarm video. MIST can handle multiple targets, showing tracks of past positions and predicted future routes based on general heading. Path prediction maintains object tracking when an object is momentarily obscured. |
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Using distributed intelligent ‘outstations’; a MIST system
can protect compounds, airfield perimeters, and country boarders. The system
uses 'Virtual Tripwires' and approach zones drawn into the video image. All
objects detected by the TI cameras are tracked; any that meet pre-defined
criteria and enter into an approach zone will raise an alert crossing a
virtual tripwire will raise an alarm. |
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· Compatible with all NetWatch servers, recording and communications products · Thermal imaging camera detector with a variety of fields of view and detection range · Audible & visual warnings or alarms when: 1. Target/s interact with Virtual Trip Wires, Warning Zones or Virtual Cages 2. Target/s size or number exceeds limits · Configurable filters and rules to suit requirements · Extremely low false trigger rate · Improved site vigilance · Minimal operator interaction required · Quicker response to potential threats · Reduced operating costs |
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