three cameras merged to one display
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three cameras merged to one display
 
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Hi All,
I am new to gstreamer, but not new to image processing. I seek advice on the best way to merge video streams in gstreamer. At least I am hoping for some indication that my goal is not doomed to failure. There are three cameras, with wide angle lenses, on a post, covering entire 360 degree field of view. The goal is to combine video from three cameras, transform and project it so that it shows in a single window as a unified picture. The question is not how to do the image processing. I can manage that. The question is how best to work with gstreamer. The first obvious way (at least to me) is to write a new plugin that has three sink-pads and one source-pad. But I can't find any examples to follow. And the docs on base transform indicate that it can't handle this situation. You experts probably know another way to do this. Maybe there is already a plugin that can help with this, but I just don't have enough imagination to see it. Is it possible to connect multiple source-pads to a single sink-pad? Thanks much for your patience with a newcomer. --Bert Douglas ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: three cameras merged to one display
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Look into the source of the videomixer plugin. It takes multiple video
streams and merges them into one. It should be a good starting point. Martin Bert Douglas wrote: > Hi All, > > I am new to gstreamer, but not new to image processing. > I seek advice on the best way to merge video streams in gstreamer. > > At least I am hoping for some indication that my goal is not doomed to > failure. > > There are three cameras, with wide angle lenses, on a post, covering > entire 360 degree field of view. > The goal is to combine video from three cameras, transform and project > it so that it shows in a single window as a unified picture. > > The question is not how to do the image processing. I can manage > that. The question is how best to work with gstreamer. > > The first obvious way (at least to me) is to write a new plugin that > has three sink-pads and one source-pad. > But I can't find any examples to follow. And the docs on base > transform indicate that it can't handle this situation. > > You experts probably know another way to do this. > Maybe there is already a plugin that can help with this, but I just > don't have enough imagination to see it. > > Is it possible to connect multiple source-pads to a single sink-pad? > > Thanks much for your patience with a newcomer. > > --Bert Douglas > ------------------------------------------------------------------------ > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by > > Make an app they can't live without > Enter the BlackBerry Developer Challenge > http://p.sf.net/sfu/RIM-dev2dev > ------------------------------------------------------------------------ > > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel > ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: three cameras merged to one display
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Hi Martin,
Thanks much. Videomixer looks very useful. I can't believe I didn't see it before. Next question: Is there a plugin to do general image warping using a coordinate map lookup table? Thanks, Bert Douglas On Sun, Aug 15, 2010 at 9:11 PM, Martin Bisson <[hidden email]> wrote: Look into the source of the videomixer plugin. It takes multiple video ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: three cameras merged to one display
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Hi,
Check this doc: http://gstreamer.freedesktop.org/data/doc/gstreamer/head/gst-plugins-good-plugins/html/gst-plugins-good-plugins-videomixer.html They have used videomixer and videobox. Both might be useful in merging video streams. Regards, Sandeep Prakash http://sandeepprakash.homeip.net |
Re: three cameras merged to one display
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Thanks much.
Bert Douglas On Mon, Aug 16, 2010 at 12:21 AM, Sandeep Prakash <[hidden email]> wrote:
------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: three cameras merged to one display
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In reply to this post by Bert Douglas
Hi,
> Thanks much. Videomixer looks very useful. I can't believe I didn't see it > before. You can also take a look at this: http://wiki.oz9aec.net/index.php/Gstreamer_Cheat_Sheet#Video_Wall:_Live_from_Pluto As I understand it is very close to what you are trying to achieve. Regards, Andrey. > > Next question: > > Is there a plugin to do general image warping using a coordinate map lookup > table? > > Thanks, > Bert Douglas > > On Sun, Aug 15, 2010 at 9:11 PM, Martin Bisson <[hidden email]> > wrote: >> >> Look into the source of the videomixer plugin. It takes multiple video >> streams and merges them into one. It should be a good starting point. >> >> Martin >> >> >> Bert Douglas wrote: >> > Hi All, >> > >> > I am new to gstreamer, but not new to image processing. >> > I seek advice on the best way to merge video streams in gstreamer. >> > >> > At least I am hoping for some indication that my goal is not doomed to >> > failure. >> > >> > There are three cameras, with wide angle lenses, on a post, covering >> > entire 360 degree field of view. >> > The goal is to combine video from three cameras, transform and project >> > it so that it shows in a single window as a unified picture. >> > >> > The question is not how to do the image processing. I can manage >> > that. The question is how best to work with gstreamer. >> > >> > The first obvious way (at least to me) is to write a new plugin that >> > has three sink-pads and one source-pad. >> > But I can't find any examples to follow. And the docs on base >> > transform indicate that it can't handle this situation. >> > >> > You experts probably know another way to do this. >> > Maybe there is already a plugin that can help with this, but I just >> > don't have enough imagination to see it. >> > >> > Is it possible to connect multiple source-pads to a single sink-pad? >> > >> > Thanks much for your patience with a newcomer. >> > >> > --Bert Douglas >> > ------------------------------------------------------------------------ >> > >> > >> > ------------------------------------------------------------------------------ >> > This SF.net email is sponsored by >> > >> > Make an app they can't live without >> > Enter the BlackBerry Developer Challenge >> > http://p.sf.net/sfu/RIM-dev2dev >> > ------------------------------------------------------------------------ >> > >> > _______________________________________________ >> > gstreamer-devel mailing list >> > [hidden email] >> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel >> > >> >> >> >> ------------------------------------------------------------------------------ >> This SF.net email is sponsored by >> >> Make an app they can't live without >> Enter the BlackBerry Developer Challenge >> http://p.sf.net/sfu/RIM-dev2dev >> _______________________________________________ >> gstreamer-devel mailing list >> [hidden email] >> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel > > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by > > Make an app they can't live without > Enter the BlackBerry Developer Challenge > http://p.sf.net/sfu/RIM-dev2dev > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel > > ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: three cameras merged to one display
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On Mon, Aug 16, 2010 at 2:20 PM, Andrey Nechypurenko
<[hidden email]> wrote: > Hi, > >> Thanks much. Videomixer looks very useful. I can't believe I didn't see it >> before. > > You can also take a look at this: > http://wiki.oz9aec.net/index.php/Gstreamer_Cheat_Sheet#Video_Wall:_Live_from_Pluto > As I understand it is very close to what you are trying to achieve. Very nice example! > > Regards, > Andrey. > >> >> Next question: >> >> Is there a plugin to do general image warping using a coordinate map lookup >> table? >> >> Thanks, >> Bert Douglas >> >> On Sun, Aug 15, 2010 at 9:11 PM, Martin Bisson <[hidden email]> >> wrote: >>> >>> Look into the source of the videomixer plugin. It takes multiple video >>> streams and merges them into one. It should be a good starting point. >>> >>> Martin >>> >>> >>> Bert Douglas wrote: >>> > Hi All, >>> > >>> > I am new to gstreamer, but not new to image processing. >>> > I seek advice on the best way to merge video streams in gstreamer. >>> > >>> > At least I am hoping for some indication that my goal is not doomed to >>> > failure. >>> > >>> > There are three cameras, with wide angle lenses, on a post, covering >>> > entire 360 degree field of view. >>> > The goal is to combine video from three cameras, transform and project >>> > it so that it shows in a single window as a unified picture. >>> > >>> > The question is not how to do the image processing. I can manage >>> > that. The question is how best to work with gstreamer. >>> > >>> > The first obvious way (at least to me) is to write a new plugin that >>> > has three sink-pads and one source-pad. >>> > But I can't find any examples to follow. And the docs on base >>> > transform indicate that it can't handle this situation. >>> > >>> > You experts probably know another way to do this. >>> > Maybe there is already a plugin that can help with this, but I just >>> > don't have enough imagination to see it. >>> > >>> > Is it possible to connect multiple source-pads to a single sink-pad? >>> > >>> > Thanks much for your patience with a newcomer. >>> > >>> > --Bert Douglas >>> > ------------------------------------------------------------------------ >>> > >>> > >>> > ------------------------------------------------------------------------------ >>> > This SF.net email is sponsored by >>> > >>> > Make an app they can't live without >>> > Enter the BlackBerry Developer Challenge >>> > http://p.sf.net/sfu/RIM-dev2dev >>> > ------------------------------------------------------------------------ >>> > >>> > _______________________________________________ >>> > gstreamer-devel mailing list >>> > [hidden email] >>> > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel >>> > >>> >>> >>> >>> ------------------------------------------------------------------------------ >>> This SF.net email is sponsored by >>> >>> Make an app they can't live without >>> Enter the BlackBerry Developer Challenge >>> http://p.sf.net/sfu/RIM-dev2dev >>> _______________________________________________ >>> gstreamer-devel mailing list >>> [hidden email] >>> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel >> >> >> ------------------------------------------------------------------------------ >> This SF.net email is sponsored by >> >> Make an app they can't live without >> Enter the BlackBerry Developer Challenge >> http://p.sf.net/sfu/RIM-dev2dev >> _______________________________________________ >> gstreamer-devel mailing list >> [hidden email] >> https://lists.sourceforge.net/lists/listinfo/gstreamer-devel >> >> > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by > > Make an app they can't live without > Enter the BlackBerry Developer Challenge > http://p.sf.net/sfu/RIM-dev2dev > _______________________________________________ > gstreamer-devel mailing list > [hidden email] > https://lists.sourceforge.net/lists/listinfo/gstreamer-devel > -- Matteo Landi http://www.matteolandi.net/ ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
Re: three cameras merged to one display
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In reply to this post by Andrey Nechypurenko-2
Thanks for the link.
Lots of good examples. --Bert Douglas On Mon, Aug 16, 2010 at 7:20 AM, Andrey Nechypurenko <[hidden email]> wrote: Hi, ------------------------------------------------------------------------------ This SF.net email is sponsored by Make an app they can't live without Enter the BlackBerry Developer Challenge http://p.sf.net/sfu/RIM-dev2dev _______________________________________________ gstreamer-devel mailing list [hidden email] https://lists.sourceforge.net/lists/listinfo/gstreamer-devel |
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