Abstract: A monitoring system is disclosed. The system comprises a range detection system, configured for scanning a scene to provide range data arranged gridwise over a plurality of picture elements, and a data processing system configured for processing the range data to monitor hygienic activity, preferably hand hygienic activity, of an individual in the scene. Preferably, the picture elements are devoid of any color data and any grayscale data. In some embodiments of the present invention the data processing system identifies one or more of the moments for hand hygiene as defined by the World Health Organization, and monitors the hygienic activity in relation to these five moments.

Abstract: A monitoring system is disclosed. The system comprises a range detection system, configured for scanning a scene to provide range data arranged gridwise over a plurality of picture elements, and a data processing system configured for processing the range data to monitor hygienic activity, preferably hand hygienic activity, of an individual in the scene. Preferably, the picture elements are devoid of any color data and any grayscale data. In some embodiments of the present invention the data processing system identifies one or more of the moments for hand hygiene as defined by the World Health Organization, and monitors the hygienic activity in relation to these five moments.

Abstract: A method of extracting three-dimensional (3D) information from an image of a scene is disclosed. The method comprises: comparing the image with a reference image associated with a reference depth map, so as to identify an occluded region in the scene; analyzing an extent of the occluded region; and based on the extent of the occluded region, extracting 3D information pertaining to an object that occludes the occluded region. In some embodiments the 3D information is extracted, based, at least in part, on parameters of the imaging system that acquires the image.