Controlling an anamorphic projected image for off-axis viewing

Abstract

We modify a projected image so as to compensate for changes in the viewer's location. We use the concept of a virtual camera in the viewing space to achieve a transformable display with improved visibility. The 3D space and virtual camera are initialized and then the image is translated, rotated, scaled and projected. The user can modify the position and size of the image freely within the allowable projection area. They can also change its orientation as seen from their viewpoint, which can be off the axis of projection. © Springer-Verlag Berlin Heidelberg 2007.