1. An apparatus for tracking an object in three-dimensional space, comprising: a projection surface; a light source disposed in spaced relation to said projection surface; the projection surface and the light source defining there between a volume of space illuminated by said light source; a light sensor responsive to illumination falling on the projection surface and operative to measure illumination levels over a predefined image plane associated with the light sensor, producing a projected image signal; a structured light source that projects a structured light within the volume of space; a structured light sensor adapted to record reflected structured light from objects occupying the volume of space producing a structured light signal; and a correlation processor receptive of the projected image signal and said structured light signal and adapted to compute a hybrid signal indicative of the position of an object within said space.