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Rethinking Semantic Segmentation From a Sequence-to-Sequence Perspective With Transformers

CVPR 2021 · Detection and segmentation › CNN features · approach: Convolution-transformer backbones · 3,682 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Replace the FCN encoder with a pure transformer sequence-to-sequence encoderSemantic segmentation · ADE20K val, single-scalemIoU: 42.17 -> 48.64Helped
Use progressive upsampling instead of one-shot upsampling (ablation)SETR · Cityscapes val, 80k, single-scalemIoU: 77.90 -> 79.34Helped
Use multi-level feature aggregation instead of progressive upsampling (ablation)SETR · ADE20K val, single-scalemIoU: 48.58 -> 48.64Helped
Use multi-level feature aggregation instead of progressive upsampling (ablation)SETR · Cityscapes val, 80k, single-scalemIoU: 79.34 -> 77.24Hurt
Replace one-shot upsampling with progressive upsampling (ablation)SETR · Pascal Context val, 80k, single-scalemIoU: 52.89 -> 54.40Helped
Use T-Large instead of T-Base (ablation)SETR-PUP · Cityscapes val, 80kmIoU: 78.02 -> 79.34Helped
Use ImageNet pre-training instead of random initialization (ablation)SETR-PUP · Cityscapes valmIoU: 42.27 -> 79.34Helped
Use multi-scale inference instead of single-scale inference (ablation)SETR-MLA · ADE20K valmIoU: 48.64 -> 50.28Helped
Use multi-scale inference instead of single-scale inference (ablation)SETR-MLA · Pascal Context valmIoU: 54.87 -> 55.83Helped
Train longer, 80k rather than 40k iterations (ablation)SETR-PUP · Cityscapes val, single-scalemIoU: 78.39 -> 79.34Helped
Use DeiT ImageNet-1K pre-training rather than ViT ImageNet-21K pre-training (ablation)SETR-PUP · Cityscapes val, 80kmIoU: 78.39 -> 79.45Helped

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