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AdderSR: Towards Energy Efficient Image Super-Resolution

CVPR 2021 · Image generation › Super-resolution · approach: CNN and transformer SR architectures · 98 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Replace intermediate EDSR convolutions with adder layersEDSR · Set5, Set14, B100, Urban100, ×2/×3/×4PSNR: The average PSNR gap between AdderSR models and baselines using convolutions over the four datasets is about 0.17 dB.Hurt
Replace intermediate EDSR convolutions with adder layersEDSR · 1280 × 720 image, ×2energy consumption: about 2.5×Helped
Add self-shortcuts to adder layers (ablation)Adder VDSR · Set5, Set14, B100, Urban100PSNR: about 1.67 dBHelped
Add learnable power activation (ablation)Adder VDSR · Set5, Set14, B100, Urban100PSNR: about 0.24 dBHelped
Add both self-shortcuts and learnable power activation (ablation)Adder VDSR · Set5, Set14, B100, Urban100PSNR: 1.91 dBHelped
Add learnable power activation while omitting self-shortcuts (ablation)Adder VDSR · Set5, Set14, B100, Urban100PSNR: 35.11 -> 35.44; 31.40 -> 31.62; 30.63 -> 30.78; 27.77 -> 27.96Helped
Add self-shortcuts while omitting power activation (ablation)Adder VDSR · Set5, Set14, B100, Urban100PSNR: 35.11 -> 37.10; 31.40 -> 32.77; 30.63 -> 31.69; 27.77 -> 30.05Helped

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