1. frame by frame motion detection (FD)
2. background substraction (BD)
3. with some noise threathhold
0.1*FD + 0.9* BD = GD
dilate -fix holes..
erode -cut the outline
4. contour finder
projector projects no infrared light. nor fluorescent lights. therefore, by using exposed b+w film as filter on monochromic camera, we can avoid feedback problem of projected image.
BNC connector + mechanical convertar -> RCA connector -> computer
super circuit camera connector + clamp to mount it anywhere