Ключевые слова: abstract, activity, background, blur, blurred, blurry, building, business, businessman, busy, city, conference, crowd, discussion, group, indoors, international, interview, job, lecture, life, lobbying, management, meeting, motion, multimedia, negotiation, occupation, office, organized, participants, people, person, planning, presentation, professional, seminar, shopping, silhouette, small, staff, startup, student, talk, teacher, team, teleconference, walking, white, worker,