 Brown had filmed sword fights and used the <unk> of the combatants ' movements to produce the animations in Barbarian . For the animations in the sequel , he turned to the works of photographer <unk> Muybridge , who made a name for himself through his series of photographs of animals and humans captured in motion . The movements of Barbarian II 's characters were based on the pictures in Muybridge 's book Human in Motion , which was published in 1901 . The resulting animation was judged very realistic and detailed by several reviewers . 
