Based on binocular cameras,this paper proposes a detection method for hidden danger of external force damage of transmission line combining target detection and feature matching ranging.Firstly,the hidden danger target area in the image is detected by improving YOLOv4 model;Then,the LoFTR model is used to match the features of the hidden danger target areas in the left and right images taken by the binocular camera,and calculate the average pixel difference of several feature matching pairs in the area to measure the distance of the hidden danger target.Finally,the hidden danger target whose distance is greater than the threshold value is regarded as irrelevant target,and the false detection is eliminated.For the target whose distance is less than the threshold value,the number of dwell frames is calculated by the deepsort target tracking algorithm,and the alarm interpretation is performed according to the dwell time,so as to realize the automation,high accuracy,and high practicability of transmission line external break-proof monitoring.
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