Patent ID: 6718049
Filing Date: 2004-04-06
Classification: G06K

Abstract:
A detection system for use in detecting a human in a scene, the detection system comprising:a first camera sensitive to a first band of wavelengths within a reflected infrared radiation range and operable to provide one or more frames of a first image output representative of the scene; a second camera sensitive to a second band of wavelengths within the reflected infrared radiation range and operable to provide one or more frames of a second image output representative of the scene; an optical device positioned to direct light reflected from the scene in at least the first band of wavelengths to the first camera and to direct light reflected from the scene in at least the second band of wavelengths to the second camera, wherein the one or more frames of the first image output are co-registered in time with the one or more frames of the second image output; and a processing apparatus operable to detect a human in the scene based on the first and second image outputs.