Projecting Rectified Images in an Augmented Environment
نویسندگان
چکیده
Steerable video projection systems make it possible to use any convenient surface as a display. This paper describes a steerable projection system in which a projector and camera are mounted in an overhead motorized assembly with two degrees of freedom. Associating a remote camera to the video projector makes it possible to discover planar surfaces in the environment that can be used as display surfaces. One possible application of this system is a ”portable display surface” composed of a hand-held white cardboard surface with a black boundary. An estimation technique is described in which the display boundaries are tracked using a robust tracker to provide the necessary information to compute an inverse homography for pre-warping the image. Continually updating the inverse homography enables the system to maintain a rectified image on the display surface despite 3D translations and rotations.
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