Well, I used pix_blob, or blob tracker, do not remember exactly, but I always gave erratic readings or based only on two axes, I like working with coordinate and mgrid are well suited to that need. Mathieu Gridflow ever asked me, I have not tried what Derek and Mathieu proposes no doubt I will today, but obviously I ask the question because I do not like to rely on a single object or platform.
Best regards friends José This is a great topic B regards José 2010/12/8 Pagano, Patrick <p...@digitalworlds.ufl.edu> > lets make a replacement patch. where shall we begin? > > pp > ________________________________________ > From: pd-list-boun...@iem.at [pd-list-boun...@iem.at] On Behalf Of Derek > Holzer [de...@umatic.nl] > Sent: Tuesday, December 07, 2010 4:32 PM > To: pd-list@iem.at > Subject: Re: [PD] new license for pidip and unauthorized WAS: pd-pidip into > Debian > > Motion tracking can be done easily in GEM with a combination of > [pix-background] to create a histrogram showing only changed pixel > values, and [pix_blob] to track the center of gravity of those changed > values. > > D. > > On 12/7/10 6:43 PM, Jose Luis Santorcuato wrote: > > I don't quite understand why people do motion detection with squares > > like that. I use a generic motion detection that gets me the centre of > > the motion, and then when I rescale the values, it may split the > > possible results into bands or squares because of rounding (if I > > quantise them). > > Hi all!, > > what is the generic motion detector you are using Mathieu? I use pdp... > > Best Regards > > José > > 2010/12/7 Mathieu Bouchard <ma...@artengine.ca <mailto: > ma...@artengine.ca>>: > > > On Tue, 7 Dec 2010, Pagano, Patrick wrote: > > > > > >> pdp_mgrid > > > > > > I don't quite understand why people do motion detection with squares > like > > > that. I use a generic motion detection that gets me the centre of the > > > motion, and then when I rescale the values, it may split the possible > > > results into bands or squares because of rounding (if I quantise > them). > > > > > > Nevertheless, if I have a picture of size (240 320 3), I can make > > groups of > > > rows and columns, for example I [#redim (15 16 20 16 3)], which turns > a > > > picture into a 5-dimensional grid, and then if I [#transpose 1 2], I > will > > > have a 5-dimensional grid that is a 2-dimensional grid of 16x16 > > icons. After > > > that, many effects and analyses that GF can do on pictures will also > > work on > > > such groups of pictures without any change. > > > > > > But more simply, if I want an average of each 16x16 icon, I don't > > need to go > > > 5-dimensional, I can just do [#downscale_by 16 smoothly] and that's > all. > > > > > >> pdp_cmap > > >> pdp_ctrack > > >> pdp_ascii > > >> are essential > > > > > > I'd like to know what it takes for you to call something «essential». > > Do you > > > mean that there is no other way to do it with Pd, or just no other > > way to do > > > with with PDP ? > > > > > >> pdp_qt will be obsolete when we get either pix_film OR pix_movie or > > >> whatever to play audio directly from a movie without extra table > banging > > >> [hopefully this exists somewhere] > > > > > > There's [#in~], which is rather experimental. It uses [#to~]. > > > > > > > _______________________________________________________________________ > > > | Mathieu Bouchard ---- tél: +1.514.383.3801 ---- Villeray, Montréal, > QC > > > _______________________________________________ > > > Pd-list@iem.at <mailto:Pd-list@iem.at> mailing list > > > UNSUBSCRIBE and account-management -> > > > http://lists.puredata.info/listinfo/pd-list > > > > > > > > -- > > http://arselectronicachile.blogspot.com > > http://comunicacionnativa.blogspot.com/ > > http://www.myspace.com/santorcuato > > > > > > > > _______________________________________________ > > Pd-list@iem.at mailing list > > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > -- > ::: derek holzer ::: http://macumbista.net ::: > ---Oblique Strategy # 207: > "Take away as much mystery as possible. What is left?" > > _______________________________________________ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > _______________________________________________ > Pd-list@iem.at mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > -- http://arselectronicachile.blogspot.com http://comunicacionnativa.blogspot.com/ http://www.myspace.com/santorcuato
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