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Thursday, April 06, 2006

gravitational lensing - iSight geeks

Matt

Matt Turk has written a hack to illustrate gravtiational lensing with video input from iSight through a Mac. Just singular isothermal sphere lens, hack it yourself for other geometries, eh?

Nifty.

see here for lensing project page

and for powers of four blog entry

I will note that the possibilities here are endless, for people wanting realistic multiple magnified images...

5 Comments:

Blogger mjt said...

Thanks for the link, Steinn. I've got some neat ideas to add on to it, for when I have some more time to play with it more extensively.

4:18 PM  
Blogger Chris said...

Don't know if either of you guys have heard of Photo Booth (this link takes you to the iMac iSight page -- Photo Booth doesn't have its own page -- weird).

Anyway, it is an app packaged with Macs with built-in iSights (can be used on any Mac with an iSight, as long as you don't see anything morally wrong getting the app via BitTorrent), and it is just a fun little app for taking stills with your camera, but you can apply effects like mirroring, fake sepia tone, fake thermal camera, etc. Matt's hack looks a lot like one of the Photo Booth effects. I wonder if they will ever allow plugins or some other way to add your own effects, like say a gravitational lens!

12:50 AM  
Anonymous Anonymous said...

The new built-in iSight with Photo Booth is great. It allowed me to take a picture of what happened to my new laptop the day after I got it in the mail. Such shoddy workmanship! Darn you, Chris, for convincing me to purchase one of these blasted machines!

-Adam

10:04 PM  
Blogger mjt said...

Chris,

The prof who "commissioned" this hack was looking into getting a MacBook Pro if this could be done. And it did get done, so he bought one. ;-) I haven't played with PhotoBooth enough to see if a plugin could be hacked into it or not -- but right now, the way its packaged works very well for presentations. The quicktime movie can be dragged into keynote and used directly in a presentation.

I'd really like to figure out a better way to pre-record video with these quartz composer hacks -- I recorded the demo in iMovie, and it didn't have a live display showing me what I looked like when it was recording. Thus, the idiocy.

1:55 PM  
Blogger mjt said...

As an update, I have posted a new, interactive version of this to my website. It's entitled GLOYD and it enables fiddling with parameters, as well as adding a second lens.

10:50 PM  

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