I have worked upon some patches in using this technique of detecting
movement by color difference. I did some interesting work overlaying
twio videos based on one's movement. You can download files at:
http://wanderingabout.com/_/animation-video/live-video-effects-programming/
Its very simplsitic becuase i used only quartz composer. I have also
seen the above mentioned red ball demo and it was quite interesting
but they used more hard core programming..
On Jan 17, 2008 3:19 PM, Ian Grant <email@hidden> wrote:
> Hi,
> You must build and checkout the Optical Flow custom quartz composer
> plugin:
>
> Developer -> Examples -> Quartz Composer -> Plugins -> OpticalFlow
>
> I haven't taken the patches apart much - but some of the camera vision
> techniques you want are there.
>
>
>
> Tea pot moves up Image flow as vectors
>
> It doesn't do shape or blob detection just motion...
>
> Regards, Ian
> *******************************
> Ian Grant
> Senior Lecturer in Digital Art
> Faculty of the Arts
> Thames Valley University
> Ealing, UK
> W5 5DX
> <email@hidden>
> *******************************
>
>
>
> On 17 Jan 2008, at 16:26, Marc Epard wrote:
>
> > On Jan 17, 2008, at 9:35 AM, Johnson, Mark P. - Duluth wrote:
> >
> >> I'm trying to figure out the best way to track hands as though a
> >> person in
> >> front of a kiosk were using a mouse (or two).
> >
> > There's an example somewhat like this in GPU Gems 3 (edited by
> > Hubert Nguyen, published by Addison Wesley). " Object Detection by
> > Color: Using the GPU for Real-Time Video Image Processing" and
> > written by Apple's Ralph Brunner, Frank Doepke, and Bunny Laden. It
> > made a most impressive demonstration at WWDC. They track a colored
> > ball and substitute another image (e.g. a duck) in real time.
> >
> > -Marc
> >
> >
> > _______________________________________________
> > Do not post admin requests to the list. They will be ignored.
> > Quartzcomposer-dev mailing list (email@hidden
> > )
> > Help/Unsubscribe/Update your Subscription:
> >
> > This email sent to email@hidden
>
>
> _______________________________________________
> Do not post admin requests to the list. They will be ignored.
> Quartzcomposer-dev mailing list (email@hidden)
> Help/Unsubscribe/Update your Subscription:
>
> This email sent to email@hidden
>
--
Alexandre Van de Sande
www.wanderingabout.com
rio de janeiro
҉
_______________________________________________
Do not post admin requests to the list. They will be ignored.
Quartzcomposer-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:
This email sent to email@hidden
