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

Table 3

Comparison table of smallest angles of the knee and hip joints at the racket stage (unit: °).

	Side knee joint		Right knee joint		Left hip joint		Right hip
	Flat strike	Top spin	Flat strike	Top spin	Flat strike		Top spin	Flat strike
A	85.57	89.29	78.09	74.43	A	85.57	89.29	78.09
B	92.27	94.18	110.58	102.88	B	92.27	94.18	110.58
C	76.21	82.98	103.35	104.95	C	76.21	82.98	103.35
D	100.75	102.84	92.94	85.13	D	100.75	102.84	92.94
E	92.60	86.24	111.27	104.30	E	92.60	86.24	111.27