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Image Restoration for Under-Display Camera

CVPR 2021 · Image generation › Image restoration · approach: Real-world restoration with unaligned data · 69 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
use the real-paired-data UNet instead of DePUDC restoration · T-OLEDPSNR/SSIM: 28.50/0.9117 -> 36.71/0.9713Helped
use the real-paired-data UNet instead of DePUDC restoration · P-OLEDPSNR/SSIM: 16.97/0.7084 -> 30.45/0.9427Helped
train UNet on real paired data rather than synthetic dataUNet · T-OLEDPSNR/SSIM: 32.42/0.9343 -> 36.71/0.9713Helped
train UNet on real paired data rather than synthetic dataUNet · P-OLEDPSNR/SSIM: 25.88/0.9006 -> 30.45/0.9427Helped
use UNet rather than ResNetUDC restoration · T-OLEDPSNR/SSIM: 36.26/0.9703 -> 36.71/0.9713Helped
use UNet rather than ResNetUDC restoration · P-OLEDPSNR/SSIM: 27.42/0.9176 -> 30.45/0.9427Helped
double the width of each UNet layer (ablation)UNet · T-OLEDPSNR/SSIM: 36.71/0.9713 -> 37.00/0.9730Helped
double the width of each UNet layer (ablation)UNet · P-OLEDPSNR/SSIM: 30.45/0.9427 -> 30.37/0.9425Hurt
use two sub-encoders instead of a single encoder (ablation)UNet · T-OLEDPSNR/SSIM: 36.47/0.9704 -> 36.71/0.9713Helped
use two sub-encoders instead of a single encoder (ablation)UNet · P-OLEDPSNR/SSIM: 30.26/0.9387 -> 30.45/0.9427Helped
add SSIM loss to L1 loss (ablation)UNet · UDC test set, both display typesPSNR/SSIM and LPIPS: 36.71/0.9713 -> 36.69/0.9714; 0.1209 -> 0.1246; 30.45/0.9427 -> 30.37/0.9403; 0.2219 -> 0.2131Mixed
add VGG perceptual loss to L1 loss (ablation)UNet · UDC test set, both display typesPSNR/SSIM and LPIPS: 36.71/0.9713 -> 36.31/0.9711; 0.1209 -> 0.1130; 30.45/0.9427 -> 30.37/0.9403; 0.2219 -> 0.2130Mixed

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