研究目的
To address the problem of high false alarms and missed detections in small aerial target detection by proposing a novel visual detail augmented mapping approach that enhances target information without altering the deep network structure.
研究成果
The proposed visual detail augmented mapping approach significantly improves small aerial target detection accuracy and robustness without modifying the deep network structure, achieving high precision and recall rates, and is efficient enough for real-time applications.
研究不足
The method may have increased computation time (average 77.63 ms) compared to direct detection (31.25 ms), and performance might degrade with highly varying target sizes in squint angle videos. It relies on pre-trained models and may not generalize to all aerial scenarios without additional training.
1:Experimental Design and Method Selection:
The methodology involves a multi-cue foreground segmentation combining optical flow (Farneback algorithm) and background modeling (Fast-MCD algorithm) to extract potential regions, followed by visual detail augmented mapping with multi-resolution scaling and foreground rearrangement, and finally detection using a pre-trained YOLO v2 deep network.
2:Sample Selection and Data Sources:
Training database combines UA-DETRAC public database (10,963 images) and self-built aerial data from DJI M100 (3175 images). Test database includes 18 sequences (79,742 frames) from various aerial scenes (e.g., intersections, roads) captured by DJI M
3:List of Experimental Equipment and Materials:
1 DJI M100 drone with ZENMUSE X3 camera for data acquisition; Intel Core i7-7700HQ CPU with 8 GB RAM for processing; software includes C++ implementation, LabelImg for annotation.
4:Experimental Procedures and Operational Workflow:
Steps include foreground segmentation, multi-resolution mapping (scales
5:0, 0, 0 with linear interpolation), foreground augmented mapping using rectangular packing, detection with YOLO v2, and coordinate inverse calculation. Data Analysis Methods:
Performance evaluated using Precision, Recall, F1-Score, and Intersection-over-Union (IOU) metrics; comparisons made with YOLO v2, Fast-MCD, RSS, and YOLO v3 methods.
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