Abstract: Safety barriers such as guardrails, handrails, walkways, and platforms are found in a large variety of industrial commercial, residential and public sites typically consist of an open framework of horizontal, vertical or inclined pipes. However in some cases such open systems do not provide a sufficient barrier to prevent dropped objects such as tools from escaping the confines of the handrail system and creating a hazard. To address this deficiency a system for enclosing a safety barrier has been developed which includes a specially adapted bracket for attachment to posts such as stanchions, hand rails or knee rails and a guard panel which is attached to the bracket and is used to enclose the side walls of the safety barrier to reduce the dropped object hazard. The bracket has an open clipping configuration to allow it to clipped onto the stanchions (or other supports) and left in place.

Abstract: The device includes a camera having first and second imaging mediums. Polarized illumination is directed toward the camera from a screen mounted behind the foreground object. The foreground object blocks some polarized light from reaching the camera. Unpolarized light illuminates the foreground object, and the light reflects from the foreground object to the camera. A prism in the camera reflects polarized light to the first imaging medium and transmits the orthogonal components from the foreground object to the second imaging medium. The image received by the first imaging medium is combined with a background scene, and the image received by the second imaging medium is added to the combined image of the first imaging medium and the background scene.