football

A step-by-step MATLAB walkthrough: import OpenPose JSON, compute joint angles with atan2d, filter with Butterworth (cutoff from the power spectrum), find phases and landing, and export a results table.

Breaking a football kick down phase by phase with a slow-motion phone video and OpenPose – backswing, leg cocking, acceleration, and the supporting leg’s shock absorption and energy transfer, read from the joint-angle and angular-velocity curves.