Aiming at estimation of photographic object distance from facial photo, the theory of anthropometry statistics in face and projective geometry are adopted to evaluate object distance directly.

• 5．提出了一种人像摄影物距的直接估算方法，它利用人类面貌测量学的统计知识和射影几何的相关理论，来求解人像的原始摄影距离。