Hello all, I'm new to this list... I've just started out with PD, with body-tracking in mind actually.
I'm working with the kinect - you can get it working on your OS of choice, via the wonderful community effort at: http://openkinect.org/wiki/Main_Page Seems like a natural fit for PD, and people are actually connecting it to the OpenNI project here: http://www.openni.org/ and there are some other skeleton tracking efforts that have been discussed on the openkinect google group. Hope this helps! Best, Ali On Mon, Jan 10, 2011 at 6:06 AM, Jaime Oliver <jaime.oliv...@gmail.com>wrote: > > the truth is: it depends on the purpose. > > Nothing Truer... > > >> Not defending anything, but just to remind 60 fps of a pointgrey camera > is not slow. > >for gesture, i consider everything under 200Hz as slow. > > surely this is the case for percussion as in your example here: > > > by example, things like this have to be done at 1000Hz: > > http://vimeo.com/9598075 > > However, with a minimum of 75fps with a ps3 camera (you can get up to > 120fps at 320x240...) you can get very responsive results: > www.jaimeoliver.pe/sc2 > > It is clear that this project is not as concerned with precise triggers, it > is more concerned with continuous control... > > you just need to find out if what these space&temporal resolutions offer > you what you're looking for. (+ solving less robust lighting, which is what > really determines if video tracking is the way to go...) > > best, > > J > > > > >> >> >> >> On Sun, Jan 9, 2011 at 12:37 AM, cyrille henry <c...@chnry.net> wrote: >> >>> >>> >>> Le 08/01/2011 20:24, Pedro Lopes a écrit : >>> >>> Not defending anything, but just to remind 60 fps of a pointgrey camera >>>> is not slow. >>>> >>> for gesture, i consider everything under 200Hz as slow. >>> including the wiimote 100Hz. >>> >>> by example, things like this have to be done at 1000Hz: >>> http://vimeo.com/9598075 >>> (we tried with slower system but it was not possible to be accurate >>> enough). >>> >>> >>> >>> you probably will have a lot of trouble in dealing with 60 frames trying >>>> to cycle through your code every second. >>>> >>> you have problem analysing the image, but dealing with the data is no >>> problem. >>> >>> >>> Accels and other hardware sensors are very useful too, and it very good >>>> results. >>>> >>> yep >>> >>> But not the best for 3d positioning of a point in space, >>>> >>> they will not provide any information regarding 3d positioning. >>> >>> >>> the question is what information do you really want... >>> if you want the position of someone in space, then you have to use a >>> camera. but you can also track he's movement with a wacom. >>> if you want to track it's gesture, then you need something faster. faster >>> than a camera. >>> >>> >>> >>> but excellent at giving the rotation of that point in space (i.e.: >>>> accels, gyros). >>>> >>> yep. >>> >>> cyrille >>> >>> >>>> :) >>>> >>>> >>>> On Sat, Jan 8, 2011 at 7:21 PM, marcello <wallacechemi...@gmail.com<mailto: >>>> wallacechemi...@gmail.com>> wrote: >>>> >>>> On 08/01/11 14:25, cyrille henry wrote: >>>> > hello, >>>> > >>>> > for the kung fu : movement are usually very fast. a camera is >>>> usually to >>>> > slow to be useful. >>>> > >>>> > i personally prefer using sensor like accelerometter on the body. >>>> > you can use wiimote or some other (faster) sensors system. >>>> > >>>> > here is a video of a performance i worked for few years ago. >>>> > http://vimeo.com/4596629 >>>> > sensors are used at time : 4'57 to 6'06 and from 6'43 to 7'23. >>>> > >>>> > at 6'43, you can see that this kind of sensors are lot's more >>>> accurate >>>> > that what you'll be able to do with a camera. >>>> >>>> That's a good point about the sensors, I didn't know this >>>> camera-latency >>>> problem. >>>> WHat kind of sensor have you used in your work ? >>>> Have you used wireless sensors ? >>>> >>>> > imo, camera are good to track body position. >>>> > kinect look to have a sensing zone that is a bit limited. >>>> >>>> A combination of the two could be an idea, but then it's complicated >>>> to >>>> merge the data... >>>> >>>> Thanks for the infos >>>> >>>> >>>> _______________________________________________ >>>> Pd-list@iem.at <mailto:Pd-list@iem.at> mailing list >>>> >>>> UNSUBSCRIBE and account-management -> >>>> http://lists.puredata.info/listinfo/pd-list >>>> >>>> >>>> >>>> >>>> -- >>>> Pedro Lopes (MSc) >>>> contact: pedro.lo...@ist.utl.pt <mailto:pedro.lo...@ist.utl.pt> >>>> >>>> website: http://web.ist.utl.pt/Pedro.Lopes >>>> >>>> >>>> >>>> _______________________________________________ >>>> Pd-list@iem.at mailing list >>>> UNSUBSCRIBE and account-management -> >>>> http://lists.puredata.info/listinfo/pd-list >>>> >>> >> >> >> -- >> Pedro Lopes (MSc) >> contact: pedro.lo...@ist.utl.pt >> website: http://web.ist.utl.pt/Pedro.Lopes >> >> _______________________________________________ >> >> Pd-list@iem.at mailing list >> UNSUBSCRIBE and account-management -> >> http://lists.puredata.info/listinfo/pd-list >> >> > > > -- > Jaime E Oliver LR > > www.jaimeoliver.pe > > 858 750 0924 (cel) > 858 202 1522 (home) > > _______________________________________________ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > >
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