Multi-projector display with continuous self-calibration
PROCAMS '08 Proceedings of the 5th ACM/IEEE International Workshop on Projector camera systems
Multi projector displays using a 3D compositing window manager
IPT/EDT '08 Proceedings of the 2008 workshop on Immersive projection technologies/Emerging display technologiges
IllumiRoom: peripheral projected illusions for interactive experiences
Proceedings of the SIGCHI Conference on Human Factors in Computing Systems
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Using projectors to create perspectively correct imagery on arbitrary display surfaces requires geometric knowledge of the display surface shape, the projector calibration, and the user's position in a common coordinate system. Prior solutions have most commonly modeled the display surface as a tessellated mesh derived from the 3D-point cloud acquired during system calibration. In this paper we describe a method for functional reconstruction of the display surface, which takes advantage of the knowledge that most interior display spaces (e.g. walls, floors, ceilings, building columns) are piecewise planar. Using a RANSAC algorithm to recursively fit planes to a 3D-point cloud sampling of the surface, followed by a conversion of the plane definitions into simple planar polygon descriptions, we are able to create a geometric model which is less complex than a dense tessellated mesh and offers a simple method for accurately modeling the corners of rooms. Planar models also eliminate subtle, but irritating, texture distortion often seen in tessellated mesh approximations to planar surfaces.