MFF-YOLO: enhanced ship detection in noisy synthetic aperture radar images with dynamic loss adjustment
摘要
Ship detection in SAR images is essential for maritime surveillance but is hindered by challenges like varying ship sizes and complex backgrounds. To enhance YOLOv8n for this task, we introduce three key innovations: the Multi-Scale Dual Attention (MDSA) module for better multi-scale feature fusion, the Frequency-Aware Feature Fusion (FAFF) module to capture both spatial and frequency domain information, and the Wise IoU v3 (WIoU v3) loss function to adjust gradient contributions based on anchor box quality. Our improved YOLOv8n model outperforms the baseline on the SSDD dataset, achieving gains of 2.32% in Precision, 3.42% in Recall, 3.55% in mAP@0.5, and 5.32% in mAP@0.5:0.95. Similarly, on the LS-SSDD dataset, it achieves gains of 2.66% in Precision, 2.94% in Recall, 5.73% in mAP@0.5, and 1.12% in mAP@0.5:0.95.