Laser Graffiti

[instinct]

I doubt very much that you would be able to draw acurately at that distance with a pen.
Also where are the beams, it would have to be very clean air not to see any I'm sure.
Me smells a scam too.

Jim

I can assure you it's not a scam.. Look up graffiti research lab.. they have made some really cool creations..

[allthatwhichis]

No There paining with a laser pointer. The projection is a video projector.

more here http://muonics.net/blog/index.php?postid=15

I thought it looked like there was a lense on the projector when they showed it there for a second.

[liteglow]

That was amasing !!!

I guess you can do the same setup if you got a Creative web-cam with motion tracktion on a "light" ..

So the webcam read the laser, then generate that into another program that draw a pencil line.... than a projector that draw that on the wall

Possible yes.. and cool !!!

[instinct]

I just bought myself a 2600 ANSI Lumens projector.. Their website has the program to download to do it yourself.. I wouldn't mind trying a smaller version of that.. i need to get a tracker camera though.. i believe the one they got was around $500 though..

[liteglow]

hmm

I have a Video-input pci card on my Computer..
So can`t I just use a regular DV cam as a tracker ??

hmm need to download that software and make a try VERY cool !!!!

[JimBo]

I actually misunderstood the thread originally, I thought the image on the building was meant to be laser.
I have a couple of DLPs and one of them is 1500 lumen, it might be fun to try.
Just need to sort the tracking out cheaply

Jim

[liteglow]

wow

I did down the software, install my webcam and run the app..

It was a nice little program that did start..
Just hit the 1 to start Cam, and the tracking did begin
Then find my 80mW green Leadlight and start drawing

It did all work out great.... the only problem with using the webcam instead of my Haugpage video card, was the FPS in the webcam..
So if you draw a cirlce at normal speed, the computer se this as a square becouse of slow update..

But it did work out great So tomorrow maybe I take my Projector and make a try on the wall outside (you really dont need a projector to make this cool)

Anyway, my idea:
-Place the projector on a wall
-Place the RGB scanner to the same wall
-Calibrate them
-Adjust the settings to draw at fast speed, and make it fade out automaticly.

Then you have a NICE "fade out" effects on the wall from the graphiq effect from the laser itself

pretty cool app to be free....

[allthatwhichis]

liteglow... are you saying you can get a webcam, pointer, this software, and a projector, and do something similar to the video but with lasers?

[instinct]

liteglow... are you saying you can get a webcam, pointer, this software, and a projector, and do something similar to the video but with lasers?

isn't that what the video is using? except probably just a better cam.

[liteglow]

isn't that what the video is using? except probably just a better cam.

That is true
But with a webcam you have no zoom.. so align it would be a damn problem.. you have to move your projector\webcam back and forward....

With a TV-input card you got a much much faster cam (more FPS) and you have zoom to align it perfectly '


I did test with my projector and webcam .. did work out 95% OK..
But after 5-10 min was boring....