Library / Xuebao / 2026-04-10

AI MOTION ANALYSIS

四级小弯

Xuebao · CASI Level 3 coach · 2026-04-10 · length 30.6s · Original video on Douyin ↗

curves
11turns
34.96°mean peak inclination
15.9° / 36.87°left / right
43.0%symmetry
143.0%rhythm variation
-4.92°angulation
88.27°/sedge rate
98.73°deepest knee flexion
73%detection coverage

Per-turn data (hover or tap)

Bar height = peak inclinationLeft turnsRight turns

Per-turn data

TurnDirStartDurationPeak incl.AngulationKnee minPeak positionEdge rate
#1R0.0s14.4s45.8°-13.2°97.0°38%4°/s
#2R14.53s1.37s40.6°-20.7°109.0°34%110°/s
#3R16.17s1.33s37.4°-11.6°84.0°48%83°/s
#4R17.83s1.37s34.4°-11.9°104.0°34%68°/s
#5R19.4s1.37s31.2°+4.6°110.0°41%91°/s
#6R20.97s1.43s34.5°+6.4°85.0°44%113°/s
#7R22.5s3.0s33.9°+1.7°88.0°21%100°/s
#8R25.67s1.4s36.0°+4.7°99.0°45%83°/s
#9R27.17s1.43s34.8°-4.7°106.0°42%104°/s
#10R28.77s1.1s40.1°-15.7°95.0°42%90°/s
#11L29.87s0.73s15.9°+6.3°109.0°95%125°/s

Download full data JSON (includes per-frame series)← PreviousNext →

Scope: image-plane geometry and timing. Angles are most accurate with the camera up or down the fall line; off-axis values read systematically low. Analysis is fully automatic with no manual correction.