用2D/3D姿态估计分析防弹少年团舞蹈同步率，发现关键动作高度一致
A Study on the Matching Rate of Dance Movements Using 2D Skeleton Detection and 3D Pose Estimation: Why Is SEVENTEEN's Performance So Bita-Zoroi (Perfectly Synchronized)?
- 通过2D骨架与3D姿态估计分析舞步
- 跳跃时脚踝和头部高度同步率达90%以上
- 适合研究舞蹈同步与动作识别的学者
SEVENTEEN是拥有13名成员的K-pop团体，成员间身高差异在同类团体中最大。尽管人数多且体态各异，其舞蹈表演却在韩流界展现出无与伦比的统一性。有说法称其舞蹈同步率高达90%甚至97%，但缺乏实证数据支持。本研究基于YouTube公开视频，采用2D骨架检测与3D姿态估计算法，分析关节角度、肢体运动及跳跃、下蹲动作，探究其表演统一性的成因。结果表明，身体各部位运动方向高度一致，跳跃时脚踝与头部位置、下蹲时头部位置均表现出显著同步。研究证实，其高同步性源于运动方向一致性及跳跃与下蹲时脚踝与头部高度的精准协同。
原文摘要 · Abstract (English)
SEVENTEEN is a K-pop group with a large number of members 13 in total and the significant physical disparity between the tallest and shortest members among K-pop groups. However, despite their large numbers and physical differences, their dance performances exhibit unparalleled unity in the K-pop industry. According to one theory, their dance synchronization rate is said to be 90% or even 97%. However, there is little concrete data to substantiate this synchronization rate. In this study, we analyzed SEVENTEEN's dance performances using videos available on YouTube. We applied 2D skeleton detection and 3D pose estimation to evaluate joint angles, body part movements, and jumping and crouching motions to investigate the factors contributing to their performance unity. The analysis revealed exceptionally high consistency in the movement direction of body parts, as well as in the ankle and head positions during jumping movements and the head position during crouching movements. These findings suggested that SEVENTEEN's high synchronization rate can be attributed to the consistency of movement direction and the synchronization of ankle and head heights during jumping and crouching movements.
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