thanks for the tip...
I think IR is definitely the way to go; yet, you can just open up a web
cam, and replace its filter with a piece of blank exposed negative...
saves you from actually having to buy an IR camera.
For me purchasing new equipment is not an option; yet, for you it might
be pocket change.
http://www.instructables.com/id/Infrared-IR-Webcam/
Ian Thomas wrote:
Yeah, I absolutely get the idea (as I said, we were discussing it
yesterday - with reference to an infra-red camera, but same
principle). Check out Mario's stuff, there are areas-of-colour
recognition algorithms there which will be of help, I think.
Cheers,
Ian
On Thu, Jan 8, 2009 at 10:08 AM, Anthony Pace <[email protected]> wrote:
To my knowledge all flash integration for multi-touch has been made possible
by using flosc by ben chun, or with OpenCV and touchLib; however, what I am
proposing is that it is possible directly through the use of the flash
player and a simple cam rig. I think that it should be possible, and at
least somewhat comparably fast, considering the player doesn't have to parse
xml socket data on a continuous basis, and all image conversions are done by
the player. I do concede that doing in c++ will most likely prove to be
faster; however, I figure why not try it out.
Since I know c++ somewhat I figure I will probably look at their libraries
if I get stuck; yet, in the meanwhile, this is a nifty experiment.
Here is the video that sparked it...
http://www.youtube.com/watch?v=pQpr3W-YmcQ
Colour tracking would be efficient in a system where you have multi coloured
thimbles or reflective tape, which is what I was thinking of when I came up
with this idea.
http://anthony-pace.deviantart.com/art/add-VR-to-current-FPS-GAMES-91091960
Ian Thomas wrote:
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.
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