Correlating Time-of-Flight (TOF) camera systems provide a novel approach to indirect range measurement. These systems pack the accuracy of common one-point TOF range measurements inside each pixel of a digital video camera. The user therefore receives a complete depth map of the acquired scene. Simultaneously, the system provides a grayscale image of the scene thus delivering also the common data received from every 2D grayscale camera. Today, at least two different technical realisations of the measurement principle are available as prototype camera systems, though the problems - especially...