Improving Small Drone Detection Through Multi-Scale Processing and Data Augmentation
This work addresses drone detection for surveillance applications, representing an incremental improvement over existing methods.
The paper tackled the problem of detecting small drones, which are often indistinguishable from birds, by introducing a methodology based on YOLOv11 with multi-scale processing, data augmentation, and post-processing for frame consistency, achieving first place in the 8th WOSDETC Drone-vs-Bird Detection Grand Challenge.
Detecting small drones, often indistinguishable from birds, is crucial for modern surveillance. This work introduces a drone detection methodology built upon the medium-sized YOLOv11 object detection model. To enhance its performance on small targets, we implemented a multi-scale approach in which the input image is processed both as a whole and in segmented parts, with subsequent prediction aggregation. We also utilized a copy-paste data augmentation technique to enrich the training dataset with diverse drone and bird examples. Finally, we implemented a post-processing technique that leverages frame-to-frame consistency to mitigate missed detections. The proposed approach attained first place in the 8th WOSDETC Drone-vs-Bird Detection Grand Challenge, held at the 2025 International Joint Conference on Neural Networks (IJCNN), showcasing its capability to detect drones in complex environments effectively.