Surveillance - Motion Detection (HandyAvi Feature)
What is motion-detection photography?
In motion detection photography the only images captured are images whose content is different from the previous image. For example, if you were taking images of your yard using motion detection photography, the first image would be captured into your movie file. If nothing changed in the scene, then no further images would be captured. If however, someone walked through your yard, all of the images of the person walking through your yard would be captured to your movie file. If the person then exited the yard, no further images would be captured until something else in the yard changed.
This results in much smaller movies. This is ideal for long-term surveillance applications. Everything "interesting" is captured but if nothing is changing within the scene, no images are captured until something again changes.
HandyAVI features a "sensitivity" control so that you can decide how much frame-to-frame motion is required to trigger image capture.
HandyAVI also allows you to draw motion-sensitive rectangles on the capture image so that frames will not be recorded unless motion occurs within one or more of the rectangles. (Example, shooting a bird nest and you don't want wind-blown background tree motion to be captured. You only want to capture activity in the nest...)
Why would we want to do motion-detection photography?
Motion-detection video can be used to
- monitor an entryway
- monitor a driveway
- monitor a parking area
- monitor a warehouse
- capture lightning during a thunderstorm
- monitor a place where wild animals might appear
- monitor bird-feeder visitors
HandyAvi makes it very easy to do Motion-detection photography with an ordinary webcam.
HandyAvi's Motion-detection capture control window: