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Label, Verify, Correct: A Simple Few Shot Object Detection Method

CVPR 2022 · Detection and segmentation › Weakly supervised detection and segmentation · approach: Pseudo-labeling for semi-supervised detection · 130 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Apply full pseudo-labelling with candidate sourcing, label verification, and box correctionFaster R-CNN, ResNet-50 · MS-COCO novel classes, 30-shotnAP: 16.6 -> 25.5Helped
Add candidate sourcing as pseudo-annotations (ablation)Faster R-CNN, ResNet-50 · MS-COCO novel classes, 30-shotnAP: +1.8 nAPHelped
Add Label Verification to candidate sourcing (ablation)Faster R-CNN, ResNet-50 · MS-COCO novel classes, 30-shotnAP: +3.4 nAPHelped
Add Box Correction after Label Verification (ablation)Faster R-CNN, ResNet-50 · MS-COCO novel classes, 30-shotnAP: +3.7 nAPHelped
Use ColorJitter, RandomCrop, and Mosaic augmentations with baseline training (ablation)Faster R-CNN, ResNet-50 · MS-COCO novel classes, 30-shotnAP: 13.0 -> 13.8Helped
Use ColorJitter, RandomCrop, and Mosaic with RPN and RoI finetuning (ablation)Faster R-CNN, ResNet-50 · MS-COCO novel classes, 30-shotnAP: 13.0 -> 16.2Helped
Add Mosaic to ColorJitter, RandomCrop, and RPN/RoI finetuning (ablation)Faster R-CNN, ResNet-50 · MS-COCO small novel instances, 30-shotnAPs: 4.3 -> 6.2Helped
Add RoI activation dropout (ablation)Faster R-CNN, ResNet-50 with C2 training · MS-COCO novel classes, 30-shotnAP: +0.4 nAPHelped
Add ignore regions for unverified novel detections during retraining (ablation)Faster R-CNN, ResNet-50 pseudo-labelling · MS-COCO novel classes, 30-shotnAP: 21.1 -> 25.5Helped
Finetune RPN on few-shot novel data (ablation)Faster R-CNN RPN · MS-COCO novel classes, 30-shot; 100 proposalsnAR IoU=0.5: 49.7 -> 71.0Helped
Finetune RoI and RPN modules in addition to the classifier (ablation)Faster R-CNN novel training · MS-COCO novel classes, 30-shotnAP: 13.0 -> 14.3Helped
Use Label Verification for person candidates (ablation)Faster R-CNN pseudo-labelling · MS-COCO person classnAP: -2.4 nAPHurt

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