Images are presented on a display to produce the perception of viewpoint motion in a three-dimensional workspace. The user can indicate a point of interest (POI) or other region on a surface in an image and request viewpoint motion. In response, another image is presented from a viewpoint that is displaced...http://www.google.de/patents/US5276785?utm_source=gb-gplus-sharePatent US5276785 - Moving viewpoint with respect to a target in a three-dimensional workspace
