Abstract: The present invention relates to an improved system and method for target motion tracking, that reduces the computational resources required, by providing for the dynamic control of the activation of targets. The present invention is comprised of a system for use in dynamically tracking the movement of a subject. A plurality of active targets are located on the subject at positions of movement of the subject. At least one camera is arranged for viewing the subject, wherein each of the at least one camera outputs a video signal. A computer receives the video signal of each and processes each video signal by means of an algorithm program to produce a control signal.

Abstract: This invention relates to an analog video merging system, and more particularly to a system that can take the output of a plurality of video cameras and form a combined video signal which can be fed to a computer having only a single frame grabber card. This system is used to track targets using multiple video cameras. The present invention is comprised of an analog video merging apparatus for merging N video signals from N video cameras. The apparatus is comprised of N video processors, each of the N processors is connected to the N video cameras in a one-to-one correspondence, wherein each of the N video processors compares the video signal associated with one of the N video cameras with a dynamic predetermined threshold level and produces a binary output signal having a low level and a high level, the low level being output if the associated video signal is below the predetermined threshold, and high level being output if the associated video signal is above the predetermined threshold.