[Retracted] Performance Evaluation of Badminton Trajectory Error Based on Wireless Sensor Network

Table 1

In-camera parameter matrix and distortion coefficients.

Category	Intrinsic parameter matrix	Distortion coefficient
		a	b	A	B	c
1		−0.06	−0.72	−0.002	0.002	0.3
2		−0.03	−0.12	−0.004	0.002	0.35
3		−0.003	−1.2	−0.002	0.005	1.3