Sports Equipment
This example illustrates a golf swing, and demonstrates the use of 1D tracking
to track a featureless object.    The club used is a 5 iron.  The golf ball diameter
is used as a calibration reference for 2D tracking since it lies in the motion

In this case, 1D line tracking is used to track along the length of the shaft.  Data
collected include distance from the line origin for each track point along a line,
and speed.  Based on the information acquired during tracking, the shaft flex
angles are measured frame-by-frame.  Calculations for acceleration, etc., can
be applied to the data that is exported to Excel.
Tracked data (1D tracking) for selected locations along the length of the shaft
are displayed graphically. Shaft flex angle information is also acquired from the
1D tracking.

2D features tracked at the hosel, the club head and the ball include position
and speed information. Speed at the various locations on the shaft, the hosel,
the club head and the ball are  plotted in feet per second vs. time.  Units are
selectable.  Shaft angles are plotted in degrees vs. time.
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