CamEagle is a new type of surveillance application
CamEagle is a new type of surveillance application. At the difference of the
usual motion detection application available for webcams, CamEagle does not just
detect motion. It detects underlying changes to the image from a reference set
at the beginning of surveillance.
Therefore, CamEagle does tolerate some movement, but will raise an alarm if the
monitored object disappears from the picture, or is masked for a predetermined
duration. CamEagle will also react if something new appears in the picture for a
duration exceeding the predetermined threshold, for example a box left on your
CamEagle is therefore especially geared to security applications, e.g.
surveillance in shops, cars in parking lots, sensitive areas, etc.. CamEagle
provides features that were so far only available in costly professional
The current relase 0.8 is an early beta evaluation version, which includes only
basic monitoring functions. Customization of alarms, recording and notifications
is not available. The number of monitored zones is one (>10 in the final
Important : CamEagle 0.8 beta needs to connect to the
dvstreamer.com web site on port 80 each time you launch it to retrieve its
running key. Please make sure that your firewall will not block it.
Warning : this version may crash, or cause your computer to
reboot. Use at your own risks.
CamEagle supports DirectX/DirectShow enabled webcams, capture cards and
capture devices such as DV Camcorders connected through USB or Firewire/IEEE1394
- Select capture device using "Select Webcam" combo box.
- Using mouse left button, select (draw) zone to monitor by drawing a
rectangle on the right hand image. At this time, movement detection becomes
active. Changed areas appear in white on the picture.
- Increase sensitivity until measured change value reaches 2%-3% (red bar on
left starts to move up).
- Decrease threshold to an appropriate value (typically 15%-20%).
- Reset the reference by pressing the Reset button. This does not erase the
- You can reselect another rectangle by redrawing it.
- You can stop movement monitoring by single mouse left button click in the
Modes of operation
CamEagle's normal mode of operation provides a good compromise between
sensitivity and tolerance to ambient light short term fluctuations. There are
two optional parameters that can be applied :
- UltraHigh sensitivity : in this mode, CamEagle does a
pixel-by-pixel comparison. This may prove unacceptably sensitive except in
the most controlled environment (indoors, under artificial light).
- Mask lighting changes : CamEagle does its changes detection
based on shapes (borders).
Dvstreamer Ltd does not gather or store any personal information from users.
Credits : Developed in Delphi using the DSPack DirectShow
component set available under the GPL at http://www.progdigy.com
Last update : 13 January 2008 12:30 GMT
© Copyright DV Streamer Ltd, 2008
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