Golf ball set-top detection method, system and storage medium

A top-mounted golf ball detection method, applied to a golf system with a camera configured on top side for detecting a golf ball provided with a mark thereon, wherein the method comprises:

• calibrating a camera:
• converting an image coordinate system of the camera into a world coordinate system;
• positioning the golf ball:
• acquiring coordinate data of the golf ball by performing a global positioning on an entire first frame picture captured by the camera after the ball is served;
• predicting a falling point range of the golf ball for a subsequent frame picture captured by the camera after the ball is served and obtaining a local picture of the frame picture according to the falling point range, and acquiring coordinate data of the golf ball by performing the global positioning on the local picture;
• calculating parameters:
• substituting the coordinate data of the golf ball obtained by the positioning into a world coordinate system to calculate movement parameters of the golf ball;
• and
• detecting a rotating speed of the golf ball:
• extracting the mark on the golf ball in the picture used for positioning by performing a gradient-based dynamic segmentation method, and acquiring the rotating speed based on angular variation of the extracted mark in the picture.