Abstract:An improved defect detection algorithm based on YOLOv10n is proposed to address the issue of low detection accuracy for transmission line defects during UAV power inspections. The specific structure involves adding a lightweight Convolutional Neural Network (CNN) attention module, CBAM, to the Backbone, enabling the enhanced network model to focus more on the features of transmission line conductor defects in both the channel and spatial dimensions. This modification reduces the rates of missed and false detections. Additionally, the original feature fusion framework in YOLOv10n is replaced with a Bidirectional Feature Pyramid Network (BiFPN). This network adds context information edges to the original FPN module and multiplies each edge by a corresponding weight. By assigning different weights to various learning features, the network emphasizes the feature mappings with greater contributions. The integration of ELAN in the spatial pyramid pooling module further enhances the model’s ability to detect small target features. Experimental results show that the improved model achieves an accuracy of 85.8%, a recall rate of 80.8%, and a mAP of 87%. These indicators demonstrate significant improvement, indicating that the proposed algorithm enhances detection accuracy and has broad application potential in transmission line inspection.