Goal detection method and related equipment

By calculating the intersecting ratio between the basketball and the basket frame and the net in the basketball video frame, and determining whether the relative distance is less than the threshold, the problem of misdetecting goals in the single-eye camera video is solved, and the accuracy of goal detection is improved.

CN119273676BActive Publication Date: 2025-03-25WUHAN XINGJI MEIZU TECH CO LTD
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Patent Information

Application Number
CN202411735078.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-11-28
Publication Date
2025-03-25
Estimated Expiration
2044-11-28

AI Technical Summary

Technical Problem

In automatic editing of basketball videos, the videos captured by a single-eye camera lack depth information, resulting in goals false detection in the direction where the basketball and the basket and the net view angle overlap, and the accuracy of goal detection is low.

Method used

By obtaining the candidate image frames in the video, the first intersecting ratio between the basketball bounding box and the basket frame bounding box and the second intersecting ratio between the basketball bounding box and the net bounding box is calculated. If the preset conditions are met, the relative distance between the basketball and the basket frame is determined, and whether there is a goal is judged based on the situation where the relative distance is less than the distance threshold.

Benefits of technology

This method effectively reduces the situation of misjudging goals in scenes of overlapping perspectives, and improves the accuracy of goal frame judgment in basketball videos that lack depth information.

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Abstract

The present disclosure relates to a goal detection method and related equipment. The method includes: obtaining a candidate image frame in a video captured by a camera; calculating a first intersection-and-union ratio between a basketball bounding box and a basket frame bounding box in the candidate image frame, and a second intersection-and-union ratio between a basketball bounding box and a net bounding box; determining the relative distance between the basketball and the basket frame in the candidate image frame when the first intersection-and-union ratio and the second intersection-and-union ratio meet preset conditions, wherein the relative distance is the difference between a first distance from the basketball to the camera and a second distance from the basket frame to the camera in the candidate image frame; determining that a goal exists when there is a target image frame in the candidate image frame whose relative distance is less than a corresponding distance threshold. The present disclosure solves the technical problem that a method of detecting goals using videos captured by a monocular camera is prone to misjudgment of goals due to the lack of depth information in the images in the videos captured by the monocular camera, resulting in low accuracy in goal detection.
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