Immersive Planar Display using Roughly Aligned Projectors

9 years 2 months ago
Immersive Planar Display using Roughly Aligned Projectors
When a projector is oblique with respect to a planar displaysurface, it creates keystoning and the projected imageis distorted. We present a rendering technique to display perspectively correct images for a moving user. This allows using roughly aligned projectors and eliminates the need for frequent electro-mechanical adjustments. The rendering process has no additional cost and can be implemented with traditional graphics hardware. We compute the collineation induced due to the display plane during preprocessing. The main idea of the paper is to use this collineation to render and warp the images of 3D scenes in a single pass via approximation of the depth buffer. We also describe how this method can be extended to display systems with multiple overlapping projectors. This technique can be easily used in CAVE, Immersive Workbenches and PowerWalls.
Ramesh Raskar
Added 01 Aug 2010
Updated 01 Aug 2010
Type Conference
Year 2000
Where VR
Authors Ramesh Raskar
Comments (0)