Snowboard Motion Library
Breaking down snowboard technique with AI and physics
A video goes in and four things come out: an overlay clip with the skeleton and live physics readouts, curves showing how each metric moves over time, a table with one row per turn, and a captured frame at peak inclination for every turn.
The video pipeline measures geometry and timing in the image plane. True edge angle and foot pressure cannot be recovered from video — those belong to the sensor version, and this library does not pretend otherwise.
Riders
Index
This article is only available in Chinese for now. The interface is translated; the prose is still on the way.
本页由分析管线自动生成,重跑会覆盖。个人批注请另建笔记链接本页。
共 2 人 · 156 条有效视频 · 1954 个弯。视频版口径 = 图像平面几何与时序(倾角/反弓/节奏/换刃速度);立刃角与足底压力属传感器版,不在本库。
滑手对比
| 滑手 | 视频 | 总弯数 | 峰值倾角均值 | 对称 | 节奏波动 | 反弓 | 换刃速度 | 最深屈膝 | |
|---|---|---|---|---|---|---|---|---|---|
| [[滑雪动作库/滑手/alex\ | ALEX]] | 76 | 1069 | 49.5° | 65.4% | 60.1% | 12.5° | 199.4°/s | 90.7° |
| [[滑雪动作库/滑手/xuebao\ | 雪宝]] | 80 | 885 | 39.8° | 62.8% | 70.5% | 10.4° | 136.1°/s | 103.0° |
指标怎么读
- 峰值倾角:每个弯体轴离铅垂线的最大角度,越大越激进(机位斜会偏小,同机位才可比)
- 对称:左弯 vs 右弯峰值倾角之比 ×100,100 = 完全对称;低于 85 通常有明显弱侧
- 节奏波动:弯时长的变异系数,越小节奏越稳,<20% 算稳定
- 反弓:峰值处腿倾角与躯干倾角之差(+ = 躯干更立);换刃瞬间无定义
- 换刃速度:入弯处倾角变化率(°/s),越大换刃越干脆
- 最深屈膝:髋-膝-踝夹角最小值,180 = 直立
数据文件
滑雪动作库/数据/baseline.csv— 每视频一行(Excel 直开)滑雪动作库/数据/turns_all.csv— 每个弯一行的完整数据集,量化分析用这个- 项目库(分析管线+原始视频):
AIsnowboarding