Ключевые слова: background, big, blue, brother, built, business, camera, color, computer, concepts, control, danger, electrical, electronics industry, equipment, exterior, glass, guard, horizontal, image, industry, instrument, isolated, lens, looking, nobody, office, optical, outdoors, pole, privacy, protection, render, safety, secrecy, security, shape, structure, surveillance, system, technology, three dimensional, urban, video, view, wall, watching, white,