Use of a laserpointer as control device
Note: This experiment is now obsolete. See Gesture based control using a Laser pointer and Image Recognition
I wanted to be able to control the videoplayback of the mediacenter (hooked
to my tube projector) without any extra remote control. The remote control
of the tube projector has a built-in laser pointer. I used a ultra-cheap
4 euro CMOS-camera and some self-programmed quick'n'dirty image recognition for the task.
The target with play/pause, file select, next, prev:
The target with the laserdot inside the previous box:
What the software sees thru the eyes of the crappy cmos-cam, notice the
very bright spot from the laser pointer (pictures cropped + strange jpeg artifacts):
Selecting buttons (no visual feedback to free some cpu cycles for media playback):
You don't have to aim before you "click". Just turn on the pointer pointing
somewhere random, and guide it to the box you want to select. Boom.