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MSFE-YOLO: A Steel Surface Defect Detection Algorithm Integrating Multi-Scale Frequency Domain and Defect-Aware
Siqi Su1, Jiale Shen1, Peiyi Lin1
1School of Mechanical and Energy Engineering, Guangdong Ocean University, Yangjiang 529500, China.
Sensors (Basel, Switzerland)
|May 4, 2026
Summary
A new Multi-Scale Frequency-Enhanced YOLO (MSFE-YOLO) algorithm improves steel surface defect detection by integrating multi-scale frequency enhancement and attention mechanisms. This method enhances accuracy and maintains real-time performance for industrial quality control.
Area of Science:
- Materials Science
- Computer Vision
- Artificial Intelligence
Background:
- Surface defect detection is critical for industrial manufacturing quality control.
- Existing algorithms struggle with multi-scale features, edge details, and frequency domain information.
- Simplistic feature fusion strategies limit the performance of current defect detection models.
Purpose of the Study:
- To propose the Multi-Scale Frequency-Enhanced YOLO (MSFE-YOLO) algorithm for improved steel surface defect detection.
- To address limitations in capturing multi-scale characteristics, utilizing edge and frequency features, and feature fusion.
- To enhance the accuracy and efficiency of automated surface defect detection systems.
Main Methods:
- Developed a Multi-Scale Frequency-Enhanced Convolution (MSFC) module using depth-adaptive dilated convolutions and the Laplacian operator.
- Designed a Cross-Stage Partial with Multi-Scale Defect-Aware Attention (C2MSDA) module incorporating Sobel edge perception and multi-scale attention.
- Introduced an Adaptive Feature Fusion Enhancement (AFFE) module for adaptive aggregation of multi-level features.
Main Results:
- MSFE-YOLO achieved mAP@0.5 scores of 79.8% on NEU-DET and 66.7% on GC10-DET datasets.
- Performance improvements of 1.7% and 2.1% over the benchmark YOLOv11s model were observed.
- The algorithm maintained a high inference speed of 89.3 FPS, meeting real-time detection requirements.
Conclusions:
- The proposed MSFE-YOLO algorithm effectively detects surface defects on steel products.
- Integration of multi-scale frequency enhancement and defect-aware attention mechanisms significantly improves detection accuracy.
- The algorithm satisfies real-time industrial detection needs, offering a robust solution for quality control.

