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Dogfight: Detecting Drones From Drones Videos

CVPR 2021 · Detection and segmentation › CNN features · approach: Context for hard detection conditions · 82 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add focal loss and Distance-IOU loss to cross-entropy (ablation)Proposed stage-1 · NPS-DronesF1 score: 0.85 -> 0.86Helped
Add focal loss and Distance-IOU loss to cross-entropy (ablation)Proposed stage-1 · NPS-DronesRecall: 0.82 -> 0.84Helped
Add channel-wise attention (ablation)Losses (focal + Distance-IOU) · NPS-DronesF1 score: 0.86 -> 0.87Helped
Add channel-wise attention (ablation)Losses (focal + Distance-IOU) · NPS-DronesRecall: 0.84 -> 0.86Helped
Add pixel-wise attention (ablation)Losses (focal + Distance-IOU) · NPS-DronesF1 score: 0.86 -> 0.87Helped
Add pixel-wise attention (ablation)Losses (focal + Distance-IOU) · NPS-DronesPrecision: 0.88 -> 0.89Helped
Add stage-2 motion-based candidate discovery and spatio-temporal verification (ablation)Stage-1 · NPS-DronesF1 score: 0.90 -> 0.92Helped
Add stage-2 motion-based candidate discovery and spatio-temporal verification (ablation)Stage-1 · NPS-DronesRecall: 0.88 -> 0.91Helped
Use multiple frames in a single-stage approach (ablation)Proposed approach · NPS-Drones and FL-DronesF1 score: below F1-score=40Hurt
Replace bilinear interpolation with patch or feature-map superresolution (ablation)Stage-2 cuboid feature resizing · NPS-Drones and FL-Dronesdetection performanceNo clear effect
Use the two-stage segmentation and spatio-temporal method rather than the strongest reported baselineDrone detection · NPS-DronesF1 score: 0.86 -> 0.92Helped
Use the two-stage segmentation and spatio-temporal method rather than the strongest reported baselineDrone detection · FL-DronesF1 score: 0.71 -> 0.80Helped

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