Tracking a laser dot on a projection screen

Oct 14, 2008 at 8:47 PM
Would it be possible to match the webcam image with the screen display of the computer (by ANDing, or ORing, or XORing... oh, you know what I mean)? That way you could, for example, track a red laser dot moving on a display cast from a projector on a screen, turning your presentation pointer into a mouse! Of course, projection mouse is just a beginning, think how Operation Wolf would improve...