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Attention-Guided Autoencoder Fusion for Insulator Defect Detection Using UAV Transmission-Line Imaging

Summary

AE-YOLO framework integrates lightweight bottleneck autoencoders, CBAM, and variance-maximizing regularization to address class imbalance, scale variation, and small defects in UAV insulator images. Achieves 95.10% [email protected], outperforming YOLO baselines by 5.0 points.

SourcearXiv Computer VisionAuthor: Malak Allam, Khaled Shaban, Ali Hamdi
Attention-Guided Autoencoder Fusion for Insulator Defect Detection Using UAV Transmission-Line Imaging
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[2606.06536] Attention-Guided Autoencoder Fusion for Insulator Defect Detection Using UAV Transmission-Line Imaging

[Submitted on 3 Jun 2026]

Title:Attention-Guided Autoencoder Fusion for Insulator Defect Detection Using UAV Transmission-Line Imaging

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Abstract:Automated defect detection in high-voltage transmission-line insulators remains challenging due to severe class imbalance, large scale variation, and the small spatial extent of defect instances in Unmanned Aerial Vehicle (UAV) imagery. To address these challenges, this paper proposes AE-YOLO, an Attention-Guided AutoEncoder-Enhanced YOLO framework for robust insulator defect detection. The architecture integrates lightweight bottleneck autoencoders within a Feature Pyramid Network-Path Aggregation Network (FPN-PAN) neck. This preserves anomaly-sensitive information during multi-scale feature fusion. Convolutional Block Attention Modules (CBAM) are used throughout the backbone, enhancing feature discrimination and suppressing background interference. The framework also introduces a variance-maximizing autoencoder regularization strategy, which encourages diverse, defect-discriminative latent representations. The network trains using a unified objective that combines focal loss, Complete IoU (CIoU) loss, and autoencoder regularization to address foreground-background imbalance and improve localization accuracy. During inference, Weighted Boxes Fusion (WBF) combines predictions from YOLOv8, YOLOv10, and YOLO11. An autoencoder-guided confidence boosting mechanism improves sensitivity to rare defect categories. Experiments on the Insulator-Defect Detection dataset show that AE-YOLO with an EfficientNetV2 backbone achieves 95.10 percent mAP at 0.5, 96.40 percent precision, and 93.80 percent recall. This performance surpasses the strongest YOLO-family baseline by 5.0 points in mAP at 0.5 and 6.7 points in recall. These results confirm the effectiveness and adaptability of the framework. The model is a practical and scalable solution for UAV-based transmission-line inspection and defect monitoring.

Subjects:

Computer Vision and Pattern Recognition (cs.CV); Artificial Intelligence (cs.AI); Machine Learning (cs.LG)

Cite as: arXiv:2606.06536 [cs.CV]

(or arXiv:2606.06536v1 [cs.CV] for this version)

https://doi.org/10.48550/arXiv.2606.06536

arXiv-issued DOI via DataCite

Submission history

From: Malak Allam [view email] [v1] Wed, 3 Jun 2026 21:56:13 UTC (2,993 KB)

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Key points and analysis

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Key points

  • AE-YOLO integrates lightweight bottleneck autoencoders in FPN-PAN neck to preserve anomaly-sensitive information
  • Convolutional Block Attention Modules (CBAM) enhance feature discrimination and suppress background interference
  • Unified training objective combines focal loss, CIoU loss, and autoencoder regularization
  • Inference uses Weighted Boxes Fusion (WBF) and autoencoder-guided confidence boosting for rare defect categories

Highlights and analysis are generated automatically and may contain errors. Check the original source.