Yes, we can, I have three cameras connect only limited by the usb ports, I sometimes use a single gemhead, under it add up how many objects you want, however I prefer to use for monitoring ctrack pidip , pdp libraries, those pd are not in order for windows.
Best regards José 2010/8/25 IOhannes m zmoelnig <[email protected]> > On 2010-08-24 21:51, Ricardo Brazileiro wrote: > > hi all, > > > > How can I use two webcam in Gem to tracking (pix_blob) ? > > use 2 [pix_video] objects. > > > > > Is it possible? > > yes. > > > > > I have two webcam, /dev/video0 and /dev/video1. I tested using pix_video > but > > I only change the device in the same window. > > the window has nothing to do with either the video grabbing nor the > video analysis. > you can grab video, run [pix_blob] on it and still only see a teapot :-) > > anyhow: pix_blob will only ever work on single pixes ("frames"). > if you want to use 2 cameras (e.g. to enlargen the viewing angle), you > basically have 2 possibilities: > - merge the two video streams into one, by using whatever compositing > techniques you are easy with. a simple one would be to display both > pixes (probably in a not-displayed [gemframebuffer]), and use [pix_snap] > to grab the composited image). then run whatever analysis you want on > the new big pix. > > - do analysis on each stream and then merge the results > > gfmasdr > IOhannes > > > _______________________________________________ > [email protected] mailing list > UNSUBSCRIBE and account-management -> > http://lists.puredata.info/listinfo/pd-list > > -- http://arselectronicachile.blogspot.com http://www.myspace.com/santorcuato
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