Gentlemen,
I would appreciate your advise about Video monitoring or surveillance using a camera and data acquisition with a PIC. Camera background image will stay almost identical, except if somebody is walking in front of the camera. (This is to monitor my backyard).
I cannot acquire the complete video signal (too big), but willing to convert video part of the signal into an average voltage, then acquire this voltage with PIC ADC.
I suppose if somebody is moving in front of the camera, the average signal should move up or down, and I can detect it. I am also assuming the average video value will change over time (day versus night for example) and will be very sensitive as a function on how far is the detected body.
Did one of you folks have heard of or designed a project like this one? Did someone knows similar project on the web ?
Your advise is more than welcome, especially if idea looks stupid.
Cheers.
GroinkGroink