Fig. 9

Distributions of Different Angles of 5 Groups. We distinguish the RCA videos from 3 angles: a). CRA30°; b) LAO30°; c) RAO30°; We distinguish the LCA videos from 6 angles: a). CAU20°; b) CRA30°; c) LAO45° + CAU20°; d) LAO45° + CRA20°; e) RAO30° + CAU20°; f) RAO30° + CRA20°. All the videos with these angles are participated in the training and testing process, demonstrating the robustness of DZL in this perspective. (LAO = Left Anterior Oblique. RAO = Right Anterior Oblique. CRA = Cranial.)