Cycling 74 » Topic: fluid controlled by motion tracking http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/feed Wed, 19 Jun 2013 04:01:32 +0000 http://bbpress.org/?v=2.2.4 http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-47385 <![CDATA[fluid controlled by motion tracking]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-47385 Wed, 23 Dec 2009 15:11:00 +0000 Cheng Chien-Wen Does anyone know how this can be done in Jitter ?

http://www.youtube.com/watch?v=T_JiGF9-CiE

I’d like to know how to make the motion tracking influence the fluid like the video on youtube. For the fluid part, the code has been shared somewhere in this forum, but it only responses to mouse click and drag. I was wondering if there is any way to make the code response to hand gestures like the one on the youtube. Where should I start ?

Thanks.

]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170533 <![CDATA[Re: fluid controlled by motion tracking]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170533 Wed, 23 Dec 2009 18:47:35 +0000 Rob Ramirez cv.jit.*?

]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170534 <![CDATA[Re: fluid controlled by motion tracking]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170534 Thu, 24 Dec 2009 22:28:06 +0000 Kyred I think you need to work on the java code provided by t-link.

]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170535 <![CDATA[Re: fluid controlled by motion tracking]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170535 Fri, 25 Dec 2009 07:56:54 +0000 efe You can use different java libraries, like traer or MSAFluid, for the physical modeling(using mxj). cv.jit would be the way to go if you are planning to do a motion tracking. It is possible, however, to do the tracking with the jitter objects(jit.op).

]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170536 <![CDATA[Re: fluid controlled by motion tracking]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170536 Wed, 13 Jan 2010 21:29:10 +0000 Florito Hi Cheng,

I’ve done something very similar in processing. I’m using optical flow in combination with fluid dynamics:

http://www.youtube.com/watch?v=nF0HJbjdn4A

The first step is that I am determining the optical flow in the incoming webcam image. Optical flow tells you which pixel moves to which direction from one frame to the other. In the youtube video, you can see me switching to the backend showing the optical flow as vectors.
A good starting point for learning more about optical flow is the short article by Pete Warden: http://petewarden.com/notes/archives/2005/05/gpu_optical_flo.html

As efe mentioned, I believe the cv.jit.LKflow and cv.jit.HSflow should do the trick.

The next step is the fluid dynamics system. For this I’ve also based my system on the article “Real-Time Fluid Dynamics for Games” by Jos Stam. (Just like Memo did on the original posted video). Check out the pdf:

http://www.dgp.toronto.edu/people/stam/reality/Research/pdf/GDC03.pdf

Happy coding.

]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170537 <![CDATA[Re: fluid controlled by motion tracking]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170537 Thu, 21 Jan 2010 17:21:05 +0000 Kyred This is really interesting, but beyond my knowledge
Is there anyone to explain how to bind the optical flow provided by cv.jit to MSAFluid?
Or better to share this part?

]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170538 <![CDATA[Re: fluid controlled by motion tracking]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170538 Fri, 22 Jan 2010 00:44:10 +0000 the_man361 very interesting paper, floritto, thanks :)

]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170539 <![CDATA[Re: fluid controlled by motion tracking]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170539 Tue, 06 Apr 2010 20:49:45 +0000 ditronic A simple question, how do you use mouse object or any data input from Max/Msp to control the fluid, MSAFluid itself has the mouselistener. I want to use input numbers from Max/Msp to control the particle.

Thanks

]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170540 <![CDATA[Re: fluid controlled by motion tracking]]> http://cycling74.com/forums/topic/fluid-controlled-by-motion-tracking/#post-170540 Wed, 21 Sep 2011 15:36:08 +0000 phawsea hi! did anyone succeed with motion tracking in max msp and use it in processing for visual output? i’m very intersted in having an example source code to understand the whole process.

thanks,
martin

]]>