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Multi-Stage Progressive Image Restoration

CVPR 2021 · Image generation › Image restoration · approach: Efficient restoration architectures · 2,086 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Use the three-stage MPRNet instead of MSPFNImage deraining · Rain100LPSNR: 32.40 -> 36.40Helped
Use MPRNet instead of the strongest listed baselineImage deblurring · GoProPSNR: 31.85 -> 32.66Helped
Use MPRNet trained on GoPro directly on HIDEImage deblurring · HIDEPSNR: +0.98 dBHelped
Use MPRNet instead of CycleISPImage denoising · SIDDPSNR: 39.52 -> 39.71Helped
Use MPRNet instead of SADNetImage denoising · DNDPSNR: 39.59 -> 39.80Helped
Use complementary earlier encoder-decoder and final ORSNet stages rather than the same subnetwork design at every stage (ablation)MPRNet · GoProPSNR: 29.4 dB; 29.53 dB -> 29.7 dBHelped
Add a third stage to the two-stage U-Net + ORSNet arrangement (ablation)MPRNet · GoProPSNR: 29.70 -> 29.86Helped
Add CSFF (ablation)MPRNet · GoProPSNR: 29.86 -> 30.07Helped
Add SAM (ablation)MPRNet · GoProPSNR: 29.86 -> 30.31Helped
Add both SAM and CSFF (ablation)MPRNet · GoProPSNR: 29.86 -> 30.49Helped
Add a second stage to the one-stage MPRNet (ablation)MPRNet · GoProPSNR: 30.43 -> 31.81Helped
Add a third stage to the two-stage MPRNet (ablation)MPRNet · GoProPSNR: 31.81 -> 32.66Helped

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