I also took the theater emitter apart, looking for some kind of switch or jumper. I was surprised by the amount of electronics. I expected the bank of power transistors to drive the ~30IR LED, the other stuff I did not expect. I need to contact the manufacturer, stereographics, about possible modifications. As for the frame delay sync problem between the projector and the CRT, one solution would be a vga delay box, if it exists, where it inputs vga, buffers it and delays it by adjustment, and outputs vga. I will contact the crt manufacturer to see if they have some ideas. Right now we are experimenting with passive/polarized stereo, but that requires projectors. So I am anticipating the continued need for active goggles for workstation situations. Another variable on the correct approach is the direction the entertainment/gaming/film industries. Matthew Dougherty 713-433-3849 National Center for Macromolecular Imagingjavascript:EditRecip(1); Baylor College of Medicine/Houston Texas USA ========================================================================= ========================================================================= -----Original Message----- From: chimera-users-bounces@cgl.ucsf.edu on behalf of Tom Ferrin Sent: Fri 8/15/2008 8:36 PM To: Greg Couch Cc: chimera-users@cgl.ucsf.edu Subject: Re: [Chimera-users] DepthQ stereo projector One could also build a very simple circuit that just inverts the stereo sync signal before it goes to the emitter. A single transistor is all that's needed. The sync signal level is 0v-5v. --tom
Just to follow up to the list. This is a generic problem for all OpenGL stereo applications due to the DepthQ projector delaying the images for a full frame. So what OpenGL thinks is the left eye comes out as the right eye and vice-versa.
The simpliest solution that fixes all stereo applications is to use a NuVision stereo emittor that lets you switch the left and right eyes. Otherwise, each stereo application needs an option to switch the eyes and currently, chimera lacks that option (to be fixed soon). In the mean time, only use the DepthQ projector with Microsoft Windows.
- Greg
On Thu, 14 Aug 2008, Greg Couch wrote:
Chimera does not have an option to switch the eyes. Since it is a device specific problem, we have expected it to be fixed by the device driver and on other platforms, the device driver does have that option. Lightspeed, who makes the DepthQ projector, is here at SIGGRAPH, so I'll stop by their booth and learn more about the projector.
- Greg
On Thu, 14 Aug 2008, Matthew Dougherty wrote:
I have been using chimera/macAqua with sequential stereo with no problems on a CRT.
I am running into problems using the depth-q stereo projector because of the way their frame buffer works. Their left and right is inverted relative to the CRT.
On other packages I activate a left/right image swap to get around this.
Is there something I can do to achieve this on Chimera?
Matt National Center for Macromolecular Imaging _______________________________________________ Chimera-users mailing list Chimera-users@cgl.ucsf.edu http://www.cgl.ucsf.edu/mailman/listinfo/chimera-users
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