Skip to main content

​
Technical Details

  • Variable Type: Event
  • Data Type: Integer
  • Units: Frame number
  • Column Name: x_factor_zero_crossing_frame
  • Required for QA: False
  • Measurement: Zero crossing of the X-Factor angle nearest the point of its steepest rate of change
  • Timing: Used internally to identify P4 Top of Swing

​
Description

X-Factor Zero Crossing marks the instant hip and shoulder rotation have no separation, following the steepest rise in the X-Factor signal — the point where the shoulders are stacked directly on top of the hips. It is used internally to bound the search for the Top of Swing event.

​
Use Cases

  • Top of Swing detection