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

Table 7

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

	X-axis	Y-axis	Z-axis
Hitting point	1.11	0.32	1.98
Head position	1.27	0.71	1.00
Spatial distance	−0.16	−0.38	0.98