I was actually thinking of Mario's lecture at FoTB 2008 where he used very similar algorithms to read square barcodes (whatever those things are called) from a webcam. Not multitouch, but there's a lot of similar code (spotting areas of colour, eliminating noise).
Worth a look, Anthony. Funnily enough we were talking about exactly the same system for multitouch here yesterday - spotting areas of colour. One of our developers had seen some demo of a similar system on TV over the weekend... Ian On Thu, Jan 8, 2009 at 9:12 AM, Glen Pike <[email protected]> wrote: > Hi, > > Mario Klingemann demo'd something like this at FlashOnTheBeach 2007 - have > a look at quasimondo.com to see the "2D or not 2D lecture" - not sure if he > released any code though? > > http://lectures.quasimondo.com/ > > Glen > > Anthony Pace wrote: >> >> I have figured out how to make flash work as a multi-touch system... I am >> coding it now... >> >> it is so darn simple... >> it just came to me after watching a video on how to make your own >> multi-touch input device using a webcam a piece of white paper and a box to >> block most of the light so the cam only sees light and dark. >> >> Since it is all based on blobs, and processing the image through a filter >> to break down the logic, and flash has access to web cams, I can just >> convert the image to black and white, threshold the image to find the blobs, >> average out a hit test area based on the finger positions, and all that >> would come after is putting together the finger gesturing logic. >> >> for instance if two blobs exist around their averaged points and have not >> moved too much or at all, yet there is a third blob that is moving a >> significant amount, perform a specific function based on its direction >> (directional logic through tracking input fed into basic physics equations >> and Pythagorean concepts) >> >> If someone has beaten me to it, I would love to know; however, if you beat >> me to it, after reading my post, tell me about it and show me your source so >> my life is made easier. >> _______________________________________________ >> Flashcoders mailing list >> [email protected] >> http://chattyfig.figleaf.com/mailman/listinfo/flashcoders >> >> > > _______________________________________________ > Flashcoders mailing list > [email protected] > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > _______________________________________________ Flashcoders mailing list [email protected] http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
