Ключевые слова: abstract, activity, audience, auditorium, background, blur, blurred, blurry, bokeh, bright, business, conference, congress, decor, defocused, education, entertainment, event, exhibition, fair, focused, furniture, group, hall, indoor, interior, learning, light, listeners, listening, meeting, modern, participants, pattern, people, person, perspective, presentation, room, seat, seminar, shop, show, sit, table, teacher, theater, theatre, unrecognizable, watching,