Comments on: Interactive laser drawing (graffiti)

By: Erik Banning

Erik Banning — Tue, 31 Jul 2007 22:32:25 +0000

Kewl project. A system that can do something similar, but doesn’t rely on image recognition: see http://www.ultimatepointer. Upoint relies on sensing the orientation of the remote by means of a compass. The screens position is indicated by the user once, by pointing to the screen-corners. After that, the computer is able to calculate where the user is pointing – and is able to do anything with that point-of-aim.

Any comments: come see my website!

By: pp

pp — Thu, 28 Jun 2007 15:22:00 +0000

this was the source of inspiration for my group's project too. We made a smaller scale implementation using an Altera Cyclone II FPGA, an M4088 monochrome camera and a standard projector. Since our implementation was only based on light intensity, you could use anything bright enough to trip the threshold (but in a dark enough room too). Check out the implementation details and the videos section too at
http://www.eecs.umich.edu/courses/eecs373/Labs/Web/W07/Light_Writer/index.htm

By: Kori

Kori — Mon, 11 Jun 2007 11:47:19 +0000

Solemn article. It make me lost in thoughts.

By: Tshen

Tshen — Fri, 08 Jun 2007 07:30:53 +0000

Very cool. I have a brother who did some work very similar to this for his undergrad thesis. He used a plain red laser and a conventional webcam/projector to make the laser dot act as a wireless mouse.

By: Fifurcio

Fifurcio — Tue, 29 May 2007 19:06:47 +0000

Cooool!

By: idan

idan — Tue, 29 May 2007 15:50:21 +0000

hi can tou give me hack to habbo hotel please

By: sulk

sulk — Mon, 28 May 2007 04:09:04 +0000

You dont have to do the setup that they did. All you really need to do it is a camera with video output, tv tuner and projector if you want to. There’s links to the program they use and the setup stuff around the site somewhere, I played around with it in february when i checked it out. Pretty fun to play with, and its more fun with a green laser : D

By: RusH

RusH — Mon, 28 May 2007 01:22:25 +0000

>$4000 projector

camera wasnt to cheap either

By: Fry-kun

Fry-kun — Sun, 27 May 2007 21:00:50 +0000

I’m really stupid – for some inexplicable reason, I thought that they modded the box to project a laser beam.. but the laser pointer only acts as a brush in this case.

Still, very nice.
And, love the idea of a whiteboard – a lot of projectors come with built-in laser pointer… just need to add a webcam and some software…

By: idan

idan — Sun, 27 May 2007 18:37:23 +0000

ralabralacykelpalakuk

By: tim

tim — Sun, 27 May 2007 15:55:50 +0000

not bad if you can afford a $4000 projector…how about a DIY 5000 lumen projector

By: Apothus

Apothus — Sun, 27 May 2007 12:34:03 +0000

i saw the video a while back and it really is very cool indeed. I think the other cool thing about it is the simplicity too, provided you can get yourself a big projector and kick arse laser too.

i Cant really understand why you would get into trouble for it though unless you pointed it against a building, painted a bullseye and said terrorists land here.

By: m56

m56 — Sun, 27 May 2007 10:51:02 +0000

I agree with Bird, this is seriously great thing. The way it responded so smoothly to the laser pointer input is hard for me to even believe! But assuming it’s not faked (and there’s no real reason I can think of for it to be anything but real) it is a sweet, sweet use of technology.

By: bird603568

bird603568 — Sun, 27 May 2007 07:21:14 +0000

if this isnt the sweetest thing ive seen here i dont know what is. also if this isnt the thing that i could get in the most trouble with i dont know what is, besides maybe the cell jammer