Ключевые слова: auditorium, background, blurred, boardroom, broadcasting, business, chairs, cinema, classroom, closeup, conference, congress, corporate, demonstration, digital, education, empty, equipment, focus, hall, indoors, job, lecture, lens, media, meeting, modern, movie, multimedia, object, office, presentation, program, projection, projector, room, school, selective, seminar, showing, slide, table, technology, training, university, video, viewer, visual, wooden, work,