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Multi-Projector Displays

The usage of projected displays in everyday office environments is still uncommon due to deficiencies in nowadays projection systems. An automatic calibration routine for multi-projector setups should adopt to the existing room geometry while not restricting the users' workflow to specific applications or by modifying their desktop environment. We present a geometry-adaptive calibration and rendering application for multi-planar surfaces which applies warping and alpha blending to an unmodified X desktop, implemented as plugin for an existing 3D hardware-accelerated compositing window manager. The transformations are performed transparently to X applications and require negligible computational resources.

Insititution: Graz University of Technology
Link: http://www.studierstube.org/deskotheque
Year: 2007 - 2008


Manuela Waldner, Christian Pirchheim, Dieter Schmalstieg
Multi projector displays using a 3D compositing window manager
In Proceedings of the 2008 workshop on Immersive projection technologies/Emerging display technologiges (EDT-IPT 2008), in conjunction with SIGGRAPH
pages 1-4
August 2008
paper [PDF - 1.3 MB]


Two-projector setup

Two-projector display spanning two walls.

Warping and blending.

The same display with warping and blending applied.


Screenshot of what is actually rendered by the window manager.

Project List

Manuela Waldner 2004 - 2011