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DAFormer: Improving Network Architectures and Training Strategies for Domain-Adaptive Semantic Segmentation

CVPR 2022 · Label-efficient and robust learning › Domain adaptation and generalization · approach: Adaptation for semantic segmentation · 616 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use DAFormer instead of the strongest prior methodUDA semantic segmentation · GTA5 → CityscapesmIoU: 57.5 -> 68.3Helped
Use DAFormer instead of the strongest prior methodUDA semantic segmentation · Synthia → CityscapesmIoU: 55.5 -> 60.9Helped
Use a MiT Transformer encoder instead of ResNet-101 (ablation)SegFormer · GTA → CityscapesUDA mIoU: 50.9 -> 58.2Helped
Add learning-rate warmup (ablation)SegFormer · GTA → CityscapesUDA mIoU: 51.8 -> 58.2Helped
Add rare class sampling (ablation)SegFormer · GTA → CityscapesUDA mIoU: +5.8 mIoUHelped
Use rare class sampling instead of uniform class-balanced sampling (ablation)SegFormer · GTA → CityscapesUDA mIoU: 62.0 -> 64.0Helped
Add thing-class ImageNet feature distance (ablation)SegFormer · GTA → CityscapesUDA mIoU: +3.5 mIoUHelped
Restrict feature distance to thing-classes rather than all classes (ablation)SegFormer · GTA → CityscapesUDA mIoU: 58.8 -> 61.7Helped
Combine RCS and feature distance (ablation)SegFormer · GTA → CityscapesUDA mIoU: 64.0 -> 66.2Helped
Ignore pseudo-label regions at image top and bottom and increase teacher EMA factor (ablation)SegFormer with RCS and FD · GTA → CityscapesUDA mIoU: 66.2 -> 67.0Helped
Use context-aware fusion across multiple encoder levels rather than context only at the bottleneck (ablation)DAFormer decoder · GTA → CityscapesUDA mIoU: 67.0 -> 68.3Helped
Use depthwise separable convolutions in the decoder (ablation)DAFormer decoder · GTA → CityscapesUDA mIoU: 67.0 -> 68.3Helped

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