Ogre in french contemporary museum Centre Pompidou

[stoulouse]

Hi all,
this post is to thank all ogre team members and ogre users.
I've used ogre for 6 months now to create a installation called "Seule avec loup" for "n + n corsino"; it is shown this month as part of the agora festival in Pompidou center, the most famous contemporary museum in France.
http://www.ircam.fr/82.html?event=404&L=1

ogre is used to render choregraphics scene with motion captured dancers. I'm using 3 PCs synchronised by custom lan code to display real time 3d on three 4x3 meters screens. the user can interact with the installation by moving, we capture his movement using a laser.

so thank you very much for your helps on this project, source could be released but i don't have a place for it and i'm not sure it will helps someone; but i can send it to who wants it, there is a avi plugin that might interest some of you.

here is a link to my flickr site where you can find some nice shots.
http://www.flickr.com/photos/stoulouse/tags/openmove/

[sinbad]

Another really interesting, unusual project - thanks for sharing it

(I moved the thread to Showcase and fixed your image links btw - phpBB doesn't like the ?v=0 on the end of flikr links)

[joshcryer]

Un.freaking.believable. That is so freaking awesome! Look at that screen! Good job stoulouse! And sinbad, dude, this thing is spreading like a virus.

[betajaen]

That is really really really good. Fantastic to see Ogre in things you'd wouldn't think of before.

[futnuh]

Beautiful Stoulouse, both from a visual and a technical perspective. I'd love to hear some more details about the exhibit, things like

How well did the system synchronize across the 3 screens? (I take it that the graphics cards aren't gen-locked, rather that you are sending a synch packet from a master to two slaves, or something similar?)

I'm sure you considered edge blending the displays. I'm curious if you tried implementing this within Ogre?

Hardware used.

You mentioned using a laser for monitoring the audience. Could you give some more details about this interaction?

What was the AVI plug-in used for?

Finally, if video of the exhibit becomes available online, do you think you could post a link to this thread?

[f_RED]

Very interesting, it's good to see some non-game project !!!
Ogre also become the tool for modern interactive artist !!!
Awesome !!!!

[stoulouse]

thanks for your comments. here are some technical details.

Hardware:
- display: 3x Bi-Xeon 3.2Ghz with 4Go RAM and GeForce 7800 GTX and 10000rpm raid HD
- laser: 1 standard PC connected to a radar laser scanning at 3fps a square of 12x12 meters
- sound: WFS system (sonicemotion), 1 Dual Mac G5

Synchronization was the biggest problem as you might guess. of course cards was not genlocked so i've made a client server system where camera, animation and movie frames are transmitted trough the network. clients also process all animation and i'm blending between server and client time to be more accurate. if the camera moves very fast you could see some desynchro.
I'm displaying movies in textures so i've modified a plugin i've found called webcam plugin to display avi stream. i can display 1024x512 movies at 30fps with animated scenes.
The laser is used to capture spatial movement of the audience, we use that to interact with the scene, for example sometime you become the wind and leaf of trees fly if you move or you can move if grass fields or walk in water and see it waving on your steps. if you want to see all scenes it takes around 20 minutes (12 scenes) and 9 of them are interactive.

The installation uses a brand new sound system called WFS, it's a new way to do sound spatialization a lot better than 5.1. ProTools and MAX MSP are used for music composition and interaction.

I'll see if i can do a movie of it, i don't know how it will render because it is very dark as you might see on photos, i've seen french TV for the premiere so i guess there should be a video available somewhere and i think the IRCAM will do some video interview.

thanks again for your great comments.

[stoulouse]

also i forgot to say i've made a little real time scene editor that let you edit lights placement/direction color etc... and scene object position rotation scale. it was very easy to do it using CEGUI.

[Oogst]

I'd like to see this in motion, but I don't like going to Paris. Do you have any video footage of this sweet beautiful stuff?

[futnuh]

An interesting (KISS) approach. My first inclination would have been to replicate the scenegraph across 3 graphics boxes, each rendering a separate screen. I like the way you've split the problem into a rendering solution followed by a distributed-movie-player. Of course it limits the scene complexity, but judging from the Burtonesque-look of the screenshots, this really wasn't an issue.

I'm displaying movies in textures so i've modified a plugin i've found called webcam plugin to display avi stream. i can display 1024x512 movies at 30fps with animated scenes.

I'd be very interested in trying this out. Any chance you could make it available? If you don't have a web server, please PM me and I'll host it.

[Timme]

I'm displaying movies in textures so i've modified a plugin i've found called webcam plugin to display avi stream. i can display 1024x512 movies at 30fps with animated scenes.

I'm glad that you found my plugin useful

[Paulov]

wow stolouse! so nice___

Eh!! really good job..

Fine to put "normal" people in contact with VR, I like the idea and sure that with so huge screens, the variety of scenes and the interactivity people wi´ll enjoy it.

Reading about how you have created the 3 screen proyection you say that you have 3PC, but wouldn´t it have been easyer to put SLI-Crossfire like graphic cards?
For example I´ve a normal 6600GT card and it comes with 2 monitor outs, and having it in SLI you could have 4 monitor outs and may be it could be more confortable to you than having several pcs and a server, and may be you wouldnt have those syncro problems... but as I´m not a programmer I cant tell you this for sure.


It would be very nice if you could release the source code so that other people can use several proyectors in their jobs, sailing in a virtual world with such big screens must be impresive!


I haven´t been able to understand the laser stage, but its not very important at all, anyway I think is something that captures your movements and converts them to pc languaje.....

au revoir!

[Timme]

Looks great!


I have two questions:

1.) Do you still use OpenCV to play the avi file? It is possible to open in OpenCV an avi file instead of a webcam by calling "cvCaptureFromFile" instead of "cvCaptureFromCam".

2.) You said that the video plays with 30 fps, how many fps do you get while rendering the whole scene?

[stoulouse]

I'm not using OpenCV so sorry i can't help.
the fps is for all the scene, with video.

[stoulouse]

source code released under svn thanks to futnuh.

there's no http access but anonymous svn should work:

Code: Select all

svn list http://svn.edmstudio.com/trunk/ogre/stoulouse
svn co http://svn.edmstudio.com/trunk/ogre/stoulouse


WebcamPlugin is modified but not renamed. It should not work with webcam.
There are some dependencies with third library like boost not included.

i'll do some cleanup when i'll have some time.

[ahmedismaiel]

it looks like the svn server refuses anonymous authentication
is there something wrong?

[futnuh]

it looks like the svn server refuses anonymous authentication
is there something wrong?

I thought I had anonymous read access set-up properly - it appears not. I'll endeavour to get it sorted out by tomorrow (currently midnight here in Calgary), after which you should be able to access stoulouse's code.

**edit: please see the message below with the new publicsvn repository details.

[futnuh]

Anonymous svn should work now. Additionally, stoulouse's code is now browsable at http://svn.edmstudio.com/trunk/ogre/stoulouse

[stoulouse]

thank you very much futnuh.

[futnuh]

thank you very much futnuh.

Unfortunately the thanks is a bit premature. Anonymous SVN access is causing problems with our authenticated access. I've had to disable it temporarily while I set up a separate anonymous read repository Hopefully by the end of today access will be restored at

Code: Select all

svn list http://publicsvn.edmstudio.com/ogre/stoulouse
svn co http://publicsvn.edmstudio.com/ogre/stoulouse


with source browsing at http://publicsvn.edmstudio.com/ogre/stoulouse

Apologies to all for the inconvenience. Stoulouse, I'll PM you about recommitting your source to the new location ...

[jonah]

thanks for sharing the project, I am interested in this, but when I check out the codes and complie them. there is a problem.fatal error C1083: Cannot open include file: 'engine/OpenMoveDisplayPacket.h': No such file or directory. I used google to search the OpenMoveDisplayPacket.h. but failed. I will appreciate you if you post this file. thanks!

[stoulouse]

sorry there is some dependencies i've not removed from the code, i'll update it as soon as possible.

[stoulouse]

one more things, for now i cannot release assets so if you think you can run the app after it compiles that's not possible, you have to use your own data for now. I don't think i'll be able to release a data.

[jonah]

thanks for you reply,you really do a good job.have a nice day!

[jonah]

I am a newbie and just have read the tutorials wrriten by clay. also I am still not very clear how the Ogre works, but I like this engine!