Analysis Technology of Tennis Sports Match Based on Data Mining and Image Feature Retrieval

Table 8

The three-dimensional distance between hitting point and head space position of the top spin (unit: m).

	X-axis	Y-axis	Z-axis
Hitting point	1.30	0.59	1.96
Head position	1.24	0.77	0.98
Spatial distance	0.06	−0.18	0.98