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Phones & BG

Posted By: Timothy Chow
Date: Thursday, 15 April 2010, at 8:07 p.m.

In Response To: Phones & BG (Frank Berger)

Frank Berger wrote:

I'm sure it can be done, but I expect it to be a lot of work...

I agree. Some years ago I went to a demo of a system that would project your PowerPoint presentation on the wall and then allow you to click buttons on the presentation by aiming a laser pointer at the right point on the wall. A camera would see your laser pointer and figure out what you were trying to do. It sounds easy but if you want to allow the camera to function from any angle and under a variety of lighting environments then it is a surprisingly challenging problem.

Messages In This Thread

• Phones & BG
  Jason Lee -- Tuesday, 13 April 2010, at 9:00 p.m.
  • Phones & BG
    Bob Glass -- Tuesday, 13 April 2010, at 9:34 p.m.
    • Phones & BG
      Bill Riles -- Tuesday, 13 April 2010, at 10:12 p.m.
      • Phones & BG
        Daniel Murphy -- Tuesday, 13 April 2010, at 10:20 p.m.
        • Phones & BG
          Henrik Bukkjaer -- Tuesday, 13 April 2010, at 11:20 p.m.
          • Phones & BG
            Chiva Tafazzoli -- Tuesday, 13 April 2010, at 11:37 p.m.
      • Phones & BG
        Phil Simborg -- Tuesday, 13 April 2010, at 11:21 p.m.
        • Phones & BG
          Bill Riles -- Tuesday, 13 April 2010, at 11:28 p.m.
  • Phones & BG
    Henrik Bukkjaer -- Tuesday, 13 April 2010, at 9:46 p.m.
    • Phones & BG
      Phil Simborg -- Tuesday, 13 April 2010, at 11:19 p.m.
    • Phones & BG
      Frank Berger -- Wednesday, 14 April 2010, at 7:01 p.m.
      • Phones & BG
        Henrik Bukkjaer -- Wednesday, 14 April 2010, at 9:12 p.m.
        • Phones & BG
          Frank Berger -- Thursday, 15 April 2010, at 7:57 p.m.
          • Phones & BG
            Timothy Chow -- Thursday, 15 April 2010, at 8:07 p.m.
            • Phones & BG
              Chase -- Thursday, 15 April 2010, at 8:29 p.m.
            • Phones & BG
              Henrik Bukkjaer -- Friday, 16 April 2010, at 7:22 a.m.
              • Phones & BG
                Henrik Bukkjaer -- Friday, 16 April 2010, at 7:25 a.m.
              • Hough Transform in Physics
                Chuck Bower -- Friday, 16 April 2010, at 2:07 p.m.
              • Phones & BG
                Timothy Chow -- Friday, 16 April 2010, at 2:07 p.m.
          • Phones & BG
            Henrik Bukkjaer -- Thursday, 15 April 2010, at 8:12 p.m.
            • Phones & BG
              Frank Berger -- Friday, 16 April 2010, at 7:09 p.m.
        • Phones & BG
          Gregg Cattanach -- Tuesday, 20 April 2010, at 8:29 p.m.
  • Phones & BG
    Leonardo Jerkovic -- Tuesday, 13 April 2010, at 10:09 p.m.
  • Phones & BG
    Phil Simborg -- Tuesday, 13 April 2010, at 11:16 p.m.
    • Phones & BG
      Jason Lee -- Tuesday, 13 April 2010, at 11:26 p.m.
  • Phones & BG
    Chiva Tafazzoli -- Tuesday, 13 April 2010, at 11:35 p.m.
  • Phones & BG
    Chuck Bower -- Wednesday, 14 April 2010, at 12:27 a.m.
    • Phones & BG
      Jason Lee -- Wednesday, 14 April 2010, at 8:35 p.m.