GEM-dev November 2011

gem-dev@lists.iem.at

16 participants
88 discussions

[ pd-gem-Patches-3414731 ] when building for 0.43, use new verbose() for version post
by SourceForge.net 17 Nov '11

17 Nov '11

Patches item #3414731, was opened at 2011-09-27 15:05 Message generated for change (Comment added) made by eighthave You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507081&aid=3414731&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: C/C++ code Group: None >Status: Open Resolution: Accepted Priority: 5 Private: No Submitted By: Hans-Christoph Steiner (eighthave) Assigned to: Nobody/Anonymous (nobody) Summary: when building for 0.43, use new verbose() for version post Initial Comment: Following up on this thread: http://lists.puredata.info/pipermail/gem-dev/2011-09/005426.html This patch uses logpost() on pd >= 0.43 to post to the version message, so that version messages are only visible at the '3 debug' level, not the '2 normal' level. ---------------------------------------------------------------------- >Comment By: Hans-Christoph Steiner (eighthave) Date: 2011-11-16 21:26 Message: Any chance of getting this patch included in the 0.93 branch? ---------------------------------------------------------------------- Comment By: IOhannes m zmölnig (zmoelnig) Date: 2011-10-24 10:41 Message: my platform: debian/sid (i368) "the patch does not compile" of course means, that Gem fails to build with your patch applied. ---------------------------------------------------------------------- Comment By: IOhannes m zmölnig (zmoelnig) Date: 2011-10-24 10:39 Message: unfortunately this patch does not compile ---------------------------------------------------------------------- Comment By: Hans-Christoph Steiner (eighthave) Date: 2011-09-28 10:17 Message: I updated this patch to use verbose(-1) to achieve the same thing while remaining binary compatibile with 0.42 and 0.41. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507081&aid=3414731&group_…

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Fwd: webcam color balance from gem
by Ricardo Fabbri 17 Nov '11

17 Nov '11

(I apologize for the crosspost) ---------- Forwarded message ---------- From: Ricardo Fabbri <rfabbri(a)gmail.com> Date: Wed, Nov 16, 2011 at 11:07 PM Subject: webcam color balance from gem To: pd-dev(a)iem.at Hi, would there be a straightforward way to adjust the hardware color balance of a webcam through GEM? Do you have experience in getting/setting those attributes with the PS3 eye webcam which has been used in a lot of Pd projects? perhaps installing a new driver with more controls? I am under Ubuntu 11.10 64bit with a 3.0.0-12 kernel. I am also trying to develop/improve v4l2 handling in gem and pdp, but I'd like to get some of the community input and wisdom first. Best, Ricardo Fabbri -- Linux registered user #175401 www.lems.brown.edu/~rfabbri labmacambira.sf.net

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Output two images from pix_ object
by Matthias Kronlachner 16 Nov '11

16 Nov '11

hi! is it possible to output 2 images (gem_states) from one pix_ object? is there any example for something like this around? i'm working on an openni external in the moment that can output skeleton data and kinect video streams at the same time. it's working fine but i don't know how to output the depth and the rgb videostream at the same time. matthias

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Gem and Optimus
by Jack 15 Nov '11

15 Nov '11

Hello, It's a good new for me today. I can now use the NVidia graphic card on my Optimus laptop with Gem and Bumblebee. Before when i launched pd and gem with : $ optirun pd-gem Pd crashed very often. Until this morning (with an upgrade of different openGL library on my Ubuntu 11.04) i can launch pd and Gem without problem. This is nice ! :) So people who have laptop with Optimus should upgrade their openGL library today and install the last Bumblebee. ++ Jack

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[ pd-gem-Bugs-3437185 ] 0.93.3 crash when closing objexporter-help.pd
by SourceForge.net 15 Nov '11

15 Nov '11

Bugs item #3437185, was opened at 2011-11-12 20:56 Message generated for change (Comment added) made by eighthave You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3437185&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: osx >Status: Closed Resolution: Rejected Priority: 5 Private: No Submitted By: Hans-Christoph Steiner (eighthave) Assigned to: Nobody/Anonymous (nobody) Summary: 0.93.3 crash when closing objexporter-help.pd Initial Comment: Using Pd-extended 0.43 2011112-macosx105-i386 on Mac OS X 10.6/Intel, which includes the 0.93.3 binary compiled Nov 10 2011, opening Help -> Browser -> Gem -> examples -> 11.obj-exporter ->obj_exporter-help.pd then closing that patch crashes Pd for me every time. Here's the backtrace: Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 pd 0x0002d1aa obj_ninlets + 26 1 pd 0x0000360a linetraverser_next + 90 2 pd 0x000045eb canvas_deletelinesforio + 59 3 pd 0x0000723d canvas_rminlet + 77 4 pd 0x000190cf vinlet_free + 31 5 pd 0x00029c29 pd_free + 25 6 pd 0x00006bdb glist_delete + 299 7 pd 0x000053cf canvas_free + 127 8 pd 0x00029c29 pd_free + 25 9 pd 0x00006bdb glist_delete + 299 10 pd 0x0000975c graph_delete + 44 11 pd 0x00006c53 glist_delete + 419 12 pd 0x000053cf canvas_free + 127 13 pd 0x00029c29 pd_free + 25 14 pd 0x0002b5bb pd_typedmess + 1099 15 pd 0x0002b4a8 pd_typedmess + 824 16 pd 0x0002f8bd binbuf_eval + 1565 17 pd 0x00038508 socketreceiver_read + 952 18 pd 0x00037439 sys_domicrosleep + 409 19 pd 0x00038041 sys_pollgui + 33 20 pd 0x00034a47 m_mainloop + 327 21 pd 0x00036aab sys_main + 1675 22 pd 0x00001ffb _start + 209 23 pd 0x00001f29 start + 41 ---------------------------------------------------------------------- >Comment By: Hans-Christoph Steiner (eighthave) Date: 2011-11-15 10:01 Message: yeah, I think this is related to the other GOP crash bugs that we've seen, the backtrace looks similar. Sorry for the noise. ---------------------------------------------------------------------- Comment By: IOhannes m zmölnig (zmoelnig) Date: 2011-11-15 09:55 Message: checked on OSX10.5/ppc (0.41.4, 0.42-3 & 0.43-0) and OSX10.6/i386 (Pd-vanilla 0.41-4, 0.42-6 & 0.43-0) without any problems. however, trying the 2011112-macosx105-i386 build on the OSX10.6/i386 machine indeed triggers the problem, even if Gem is NOT loaded. i therefore think this is a bug in Pd-extended. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3437185&group_…

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[ pd-gem-Bugs-3437185 ] 0.93.3 crash when closing objexporter-help.pd
by SourceForge.net 15 Nov '11

15 Nov '11

Bugs item #3437185, was opened at 2011-11-12 20:56 Message generated for change (Comment added) made by zmoelnig You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3437185&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: osx >Status: Pending >Resolution: Rejected Priority: 5 Private: No Submitted By: Hans-Christoph Steiner (eighthave) Assigned to: Nobody/Anonymous (nobody) Summary: 0.93.3 crash when closing objexporter-help.pd Initial Comment: Using Pd-extended 0.43 2011112-macosx105-i386 on Mac OS X 10.6/Intel, which includes the 0.93.3 binary compiled Nov 10 2011, opening Help -> Browser -> Gem -> examples -> 11.obj-exporter ->obj_exporter-help.pd then closing that patch crashes Pd for me every time. Here's the backtrace: Thread 0 Crashed: Dispatch queue: com.apple.main-thread 0 pd 0x0002d1aa obj_ninlets + 26 1 pd 0x0000360a linetraverser_next + 90 2 pd 0x000045eb canvas_deletelinesforio + 59 3 pd 0x0000723d canvas_rminlet + 77 4 pd 0x000190cf vinlet_free + 31 5 pd 0x00029c29 pd_free + 25 6 pd 0x00006bdb glist_delete + 299 7 pd 0x000053cf canvas_free + 127 8 pd 0x00029c29 pd_free + 25 9 pd 0x00006bdb glist_delete + 299 10 pd 0x0000975c graph_delete + 44 11 pd 0x00006c53 glist_delete + 419 12 pd 0x000053cf canvas_free + 127 13 pd 0x00029c29 pd_free + 25 14 pd 0x0002b5bb pd_typedmess + 1099 15 pd 0x0002b4a8 pd_typedmess + 824 16 pd 0x0002f8bd binbuf_eval + 1565 17 pd 0x00038508 socketreceiver_read + 952 18 pd 0x00037439 sys_domicrosleep + 409 19 pd 0x00038041 sys_pollgui + 33 20 pd 0x00034a47 m_mainloop + 327 21 pd 0x00036aab sys_main + 1675 22 pd 0x00001ffb _start + 209 23 pd 0x00001f29 start + 41 ---------------------------------------------------------------------- >Comment By: IOhannes m zmölnig (zmoelnig) Date: 2011-11-15 09:55 Message: checked on OSX10.5/ppc (0.41.4, 0.42-3 & 0.43-0) and OSX10.6/i386 (Pd-vanilla 0.41-4, 0.42-6 & 0.43-0) without any problems. however, trying the 2011112-macosx105-i386 build on the OSX10.6/i386 machine indeed triggers the problem, even if Gem is NOT loaded. i therefore think this is a bug in Pd-extended. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507079&aid=3437185&group_…

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new pix_colordetect
by Ricardo Fabbri 14 Nov '11

14 Nov '11

Dear IOhannes and gem community, I have writen a color detector and would like to see if you think it could be included in Gem. As far as I researched in the past weeks, there is no similar code in Pd libraries. I developed this code by careful tuning based on a ground-truth dataset of about 200 color images from paper. The code detects color classes that is *perceptually* and unambiguously red, green, blue, yellow, black, and white. It will let you know when it is unsure of the output. Perhaps you can pull the "color" branch from my published Git repo at: git://github.com/rfabbri/Gem.git I rebased the branch on the latest Gem git master branch. I wrote a help patch help/pix_colordetect-help.pd which works on an image and an example/demo patch in examples/04.video/07.bg_subtract_tracking.pd that works on a video. To test the code, I suggest taking a look at these patches. I look forward to your feedback, and your opinion about incorporating it into Gem. Ricardo Fabbri -- Linux registered user #175401 www.lems.brown.edu/~rfabbri labmacambira.sf.net

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sound + video : real time issues
by Ricardo Fabbri 14 Nov '11

14 Nov '11

Hi, I am building instalations/instruments which control sounds through the webcam, using a color detector that I submitted to this list a couple of days ago. Things work well, and I am just facing real time/delay issues now. When I try to generate sound with any pix processing, I am getting jumps in the sound (like on/off sounds at about 5-20Hz). Turning off any pix processing, the sound is then back to normal, even if I show the raw video from the camera on a gemwin. By pix processing I mean anything with even only 1 pass through the image on the CPU. I am using a ps3eye camera, which makes things better as it has a high framerate, but I still get interruptions in the sound. Why is this lag in the sound? The image with the output of the pix processing doesn't seem to be moving any slower with or without sound. What are your experiences in trying to get gem pix processing, video, and DSP to work in real time? My application is interactive, so that I really need the sound to be as smooth as possible. Here are some factors I will investigate, let me know if they make any sense to you: - It could be just too much data, even a single pass on each pixel could be causing delays/jumps. I could downsample the image prior to any pix processing - The kernel is too slow in processing the video stream; I tried '-rt' with no success - Perhaps there is a problem in Pd sound scheduling vs pix processing - Perhaps its just the CPU. In fact, I used OSC to do the video on one machine, send the parameters to a second machine which then processes the audio there. This effectively solved the problem. Question is, is this due to CPU or to another factor? I would really appreciate hearing ideas from you, as I am new to this. Best, Ricardo Fabbri -- Linux registered user #175401 www.lems.brown.edu/~rfabbri labmacambira.sf.net

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Re: [GEM-dev] [PD-dev] sound + video : real time issues
by Hans-Christoph Steiner 14 Nov '11

14 Nov '11

from the cmd line: -rt hig priority, -nrt low. .hc On Nov 14, 2011, at 9:44 AM, Vilson Vieira wrote: > How to set high priority for audio Pd instance and lower priority to the other instance? > > All the best. > > 2011/11/14 Ricardo Fabbri <rfabbri(a)gmail.com> > Thanks for the replies. > > problems solved by using 2 Pd instances, one for video, the other for audio, communicating via OSC on the same machine (or even different machines). The machine also had to have a better CPU as doing this on a slower dualcore laptop only fixed the audio, while the video got very slow. > > best, > > > On Monday, November 14, 2011, Hans-Christoph Steiner <hans(a)at.or.at> wrote: > > > > I think generally, for gem + audio patches, people run two instances of Pd, one for Gem and the other for the audio. The audio instance has realtime priority, and the Gem one does not. > > > > .hc > > > > On Nov 13, 2011, at 10:17 PM, Ricardo Fabbri wrote: > > > >> Hi, > >> > >> I am building instalations/instruments which control sounds > >> through the webcam, using a color detector that I submitted to this > >> list a couple of days ago. Things work well, and I am just facing real > >> time/delay issues now. > >> When I try to generate sound with any pix > >> processing, I am getting jumps in the sound (like on/off sounds at > >> about 5-20Hz). Turning off any pix processing, the sound is then back > >> to normal, even if I show the raw video from the camera on a gemwin. > >> By pix processing I mean anything with even only 1 pass through the > >> image on the CPU. I am using a ps3eye camera, which makes things > >> better as it has a high framerate, but I still get interruptions in > >> the sound. > >> > >> Why is this lag in the sound? The image with the output of the pix > >> processing doesn't seem to be moving any slower with or without sound. > >> > >> What are your experiences in trying to get gem pix processing, video, > >> and DSP to work in real time? My application is interactive, so that I > >> really need the sound to be as smooth as possible. Here are some > >> factors I will investigate, let me know if they make any sense to you: > >> > >> - It could be just too much data, even a single pass on each pixel > >> could be causing delays/jumps. I could downsample the image prior to > >> any pix processing > >> - The kernel is too slow in processing the video stream; I tried '-rt' > >> with no success > >> - Perhaps there is a problem in Pd sound scheduling vs pix processing > >> - Perhaps its just the CPU. In fact, I used OSC to do the video on one > >> machine, send the parameters to a second machine which then processes > >> the audio there. This effectively solved the problem. Question is, is > >> this due to CPU or to another factor? > >> > >> I would really appreciate hearing ideas from you, as I am new to this. > >> Best, > >> Ricardo Fabbri > >> -- > >> Linux registered user #175401 > >> www.lems.brown.edu/~rfabbri > >> labmacambira.sf.net > >> > >> _______________________________________________ > >> GEM-dev mailing list > >> GEM-dev(a)iem.at > >> http://lists.puredata.info/listinfo/gem-dev > > > > > > > > ---------------------------------------------------------------------------- > > > > Computer science is no more related to the computer than astronomy is related to the telescope. -Edsger Dykstra > > > > > > > > -- > > Ricardo Fabbri > -- > Linux registered user #175401 > www.lems.brown.edu/~rfabbri > labmacambira.sf.net > > > _______________________________________________ > Pd-dev mailing list > Pd-dev(a)iem.at > http://lists.puredata.info/listinfo/pd-dev > > > > > -- > Vilson Vieira > > vilson(a)void.cc > > ((( http://automata.cc ))) > > ((( http://musa.cc ))) ---------------------------------------------------------------------------- Looking at things from a more basic level, you can come up with a more direct solution... It may sound small in theory, but it in practice, it can change entire economies. - Amy Smith

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[ pd-gem-Feature Requests-3207644 ] get / set property of DC1394 devices
by SourceForge.net 14 Nov '11

14 Nov '11

Feature Requests item #3207644, was opened at 2011-03-12 03:09 Message generated for change (Settings changed) made by zmoelnig You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507082&aid=3207644&group_… Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None Group: None >Status: Closed Priority: 5 Private: No Submitted By: Cyrille Henry (nusmuk) Assigned to: IOhannes m zmölnig (zmoelnig) Summary: get / set property of DC1394 devices Initial Comment: It would be very nice to be able to get / set DC1394 camera property, just like V4L camera. ---------------------------------------------------------------------- Comment By: IOhannes m zmölnig (zmoelnig) Date: 2011-09-21 08:18 Message: afaik, this has been implemented in 0.93 ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=507082&aid=3207644&group_…

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GEM-dev November 2011