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Image2StyleGAN++: How to Edit the Embedded Images?

CVPR 2020 · Image generation › Editing and style transfer · approach: Instruction-based diffusion editing · 518 citations (OpenAlex)

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Measured effects reported in the paper

What was changedWhereMeasuredEffect
Add sequential noise optimization after W+ embeddingImage2StyleGAN++ · Image reconstructionPSNR: 19 to 22 dB -> 39 to 45 dBHelped
Jointly optimize W+ and noise with perceptual and pixel-wise losses (ablation)Image2StyleGAN++ · Image reconstructionPSNR: PSNR score decreases to 33.3 dBHurt
Repeat W+ optimization after noise optimization (ablation)Image2StyleGAN++ alternating optimization · Image reconstructionPSNR: 39.5 dB to 20 dBHurt
Add noise-space optimization to W+ image embeddingImage2StyleGAN++ · Image inpainting, 1024×1024SSIM: 0.8957 -> 0.9176Helped
Use masked rather than non-masked interpolationImage2StyleGAN++ · FFHQPerceptual length (full): 227.1 -> 112.1Helped
Use spatial copying rather than averaging or channel-wise copying (ablation)Activation tensor manipulation · Image crossover and feature transferVisual blending qualityHelped
Optimize W+ and noise jointly using pixel-wise MSE only (ablation)Image2StyleGAN++ · Image reconstructionImage editing suitabilityHurt
Resample noise after jointly optimizing W+ and noise with pixel-wise MSE (ablation)Image2StyleGAN++ · Image reconstructionReconstruction qualityHurt

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