The systems and methods described herein include, among other things, a technique for calibrating the outputs of multiple sensors, such as CCD devices, that have overlapping fields of view and mapping the pixels of those outputs to the pixels of a display screen by means of a lookup table so that a user...http://www.google.com/patents/US7262789?utm_source=gb-gplus-sharePatent US7262789 - Method of creating a virtual window