Ball motion trajectory tracking method applicable to occlusion scenes

Abstract

The invention discloses a ball motion trajectory tracking method applicable to occlusion scenes. The method includes the following steps: acquiring a tracked target ball in a video, and tracking and determining the size and position of each frame of ball in the video through a CAMSHIFT algorithm; determining whether there is occlusion, and if there is no occlusion, connecting the positions of theball in all the frames of the video to get the motion trajectory of the ball; if there is occlusion, predicting the positions of the ball through a Kalman filtering algorithm, and updating the positions of the ball in the CAMSHIFT algorithm; and finally, connecting the positions of the ball in all the frames of the video to get the motion trajectory of the ball. The problem that the video background in ball games is complicated is solved. When a ball is blocked, the motion trajectory of the ball can be accurately predicted. Therefore, the motion trajectory of a ball can be accurately tracked in a dynamic occlusion scene.

Description

technical field [0001] The invention relates to the technical field of ball game trajectory tracking, in particular to a ball game trajectory tracking method adapted to occlusion scenes. Background technique [0002] As sports are paid more and more attention by people, people pay more and more attention to sports competitions. From small school sports games to international Olympic Games, audiences are more and more pursuing the fairness of the competition while pursuing exciting and intense competitions. Therefore, the Hawkeye system has been used in competitions since a long time ago. Its primary task is to track the trajectory of the ball to assist referees in making decisions, pursue more accurate decisions, and have been continuously improved. [0003] At present, sports games such as tennis, badminton, and volleyball are using the Hawkeye system. However, the Hawkeye system is in the exploratory stage. In volleyball games with athletes as the background, the Hawkeye ...

AI Technical Summary

Problems solved by technology

[0003] At present, the Hawkeye system is used in tennis, badminton, volleyball and other sports competitions. However, the Hawkeye system is in the exploratory stage. In volleyball games with athletes as the background, the Hawkeye system has difficulties in tracking the trajectory of the ball.

Moreover, if it is blocked during the ball game, it is difficult for the Hawkeye system to predict the trajectory of the ball, that is, the Hawkeye system is not perfect for tracking the ball trajectory in dynamic and occluded scenes.

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