On Fri, 2 Aug 2013 12:30:27 +0200, Stefan Eilemann wrote: > >> Martin - I didn't understand what switching VR/2D projection does > >> in your case, does it switch on/off distortion correction? > > > > In '2D projection' mode, we pretend the cylinder is planar, and can > > then use a 2D rectangular region on this plane as our viewport. > > The calibration still has to make sure that a rendered rectangle is > > still rectangular on the plane (because it is not really a plane). > > I still don't understand what the difference is. You say: > > projector calibration from 'VR' to a '2D presentation' mode which > assumes that the cylinder is actually a plane. > > But the 3D stuff has to come from the application, since the system > only gets 2D (DVI) images, so I don't see what it can do to the > signal in the planar/non-planar sense.
We currently have video processors between the GPUs and the projectors. These video processors apply warping (and blending, masking, color correction etc). The warping is required for the cylindrical screen, and it differs between 2D and VR mode. Martin -- Computer Graphics and Multimedia Systems Group University of Siegen, Germany http://www.cg.informatik.uni-siegen.de/
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