hi all,
How can I use two webcam in Gem to tracking (pix_blob) ?
Is it possible?
I have two webcam, /dev/video0 and /dev/video1. I tested using pix_video but I only change the device in the same window.
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:
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.
gfmasdr IOhannes
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 zmoelnig@iem.at
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
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
hi,
i try to do using two pix_video but only one capture.
i attached the patch.
any idea?
tkz
On Wed, Aug 25, 2010 at 12:19 PM, Jose Luis Santorcuato < santorcuato76@gmail.com> wrote:
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 zmoelnig@iem.at
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
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
--
http://arselectronicachile.blogspot.com http://www.myspace.com/santorcuato
Pd-list@iem.at mailing list UNSUBSCRIBE and account-management -> http://lists.puredata.info/listinfo/pd-list
Centre DATABAZ 3ème WORKSHOP PURE DATA - spécial capteurs et arts sensitifs
__ samedi 11 et dimanche 12 septembre [9H-18h] Centre DATABAZ — Angoulême — 100 rue du Gond information = 06 61 37 22 35
Formateur : Philippe Boisnard Participants minimum : 5 / maximum : 10.
[+] Le workshop [Pure Data] est ouvert à tous :
Data.
Il sera nécessaire d'amener un micro-ordinateur portable (MAC/PC/ LINUX) sur lequel sera installé [Pure Data] et les librairies nécessaires pour le workshop.
Il s'agira de découvrir l'art sensitif à travers les possibilités
d'interaction avec capteurs à partir de patches [Pure Data] déjà
programmés par le formateur. Les capteurs utilisés seront : des
potentiomètres (pression), capteurs de distance InfraRouge, des
Ribbon, manette WII. Les données seront testées en connection filaire,
en HF et en Bluetooth.
La programmation [Pure Data] ne sera pas essentielle (même si les
patches seront analysés pour permettre une meilleure compréhension des
potentialités de captation et la possibilité d'une création autonome),
car ce work-shop se concentrera sur l'interaction en vue de la
performance, des arts et de l'installation.
Matériel mis à disposition :
1 émetteur/récepteur HF de données MIDI
2 boitiers de connection filaire [OSC/MIDI]
2 manettes de wii
2 consoles MIDI
8 Ribbon
3 capteurs de distance
6 capteurs pressions
1ère journée : analyse de patches, de dispositifs et des éléments de
l'interaction
2ème journée : développement d'un projet personnel avec l'aide du
formateur.
[+] Participations : _ [non adhérent] 75 € pour les deux jours (repas midi compris) _ [adhérent] 50 € pour les deux jours (repas midi compris) _ [étudiants, chômeurs, RMI/RSA] 40 € (repas midi compris)
[+] Les repas seront fournis par l'association Trame Ouest et pris
dans le centre Databaz.
[+] Possibilité d'hébergement sur place sur réservation pour ceux qui
viennent de loin (places limitées + apporter un sac de couchage)
______________________________________________________________________________________________