There's good stuff by Grant Skinner too:
http://incomplet.gskinner.com/index2.html#camwriter
Piers
On 8 Jan 2009, at 10:35, 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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