Abstract
Tracking the trajectory of dribble directional shooting in the video image is beneficial to improve the basketball training skills. In this paper, the trajectory tracking method of dribble directional shooting based on the symmetrical algorithm is proposed. The symmetric differential algorithm is used to segment the video image of the dribble directional shooting. In the segmented image sequence, the range of motion of the dribble directional shooting is detected every three consecutive frames. Through the maximum variance ratio threshold method, the motion area of the dribble directional shot is divided. The initial motion coordinates and feature vectors of the dribble directional shooting are calculated, and the characteristic affine transformation equation of the shooting action pixel information is constructed. The Camshift method is used to mark the trajectory contour of the dribble directional shooting. According to the result of the contour extraction, the gray pixel value feature points of the video sequence are fitted, and the trajectory tracking model of the dribble directional shooting is established to accurately track the trajectory of the dribble directional shooting. It is verified that the trajectory of the dribble directional shooting tracked by the proposed method is consistent with the actual situation, and the tracking error average is about 1.9%, that is the reliable trajectory tracking method of dribble directional shooting.










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Ma, M., Han, Z. Symmetric Algorithm for Direction Tracking of Dribble Directional Shooting. Wireless Pers Commun 127, 125–140 (2022). https://doi.org/10.1007/s11277-021-08096-w
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DOI: https://doi.org/10.1007/s11277-021-08096-w