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
smime.p7s
Description: S/MIME Cryptographic Signature
_______________________________________________ Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
