Resumen de Badminton players’ trajectory under numerical calculation method
Jiaqing Chi, Dimah Alahmadi
The trajectory tracking of badminton players’ arm shots can be used effectively to enhance the player’s shot quality. Totrack the image trajectory of the batting arm, it is necessary to calculate the body posture ratio and tightness of the targetarea of the batting arm, to filter the background interference of the image segment of the batting and to complete the efficienttracking of the trajectory of the arm batting image. The traditional method combines the adaptive threshold segmentationmethod to extract the hitting arm target from the background, but ignores filtering out the background interference of thehitting image fragment. This paper proposes a trajectory tracking method based on the morphological operator of the batterimage of the arm stroke. The method consists of (1) differentially calculating the image sequence of the hitting arm duringtwo consecutive shots, (2) estimating the Gaussian model parameters of the differential image of the hitting arm duringthe hitting process, (3) extracting the outline of the moving target of the hitting arm during the hitting process and thencalculating the body posture ratio of the hitting target area and compactness, (4) filtering the background interference ofthe shot image fragment, (6) constructing a global matching approximation function of the moving target and (7) finallydetermining the motion trajectory of the badminton arm of the batter. Simulation results show that the proposed methodcan effectively track the target of the hitting arm during the hitting process and generate a continuous trajectory of thehitting arm
