google / prompt-to-prompt

Apache License 2.0
2.98k stars 279 forks source link

A question about ddim inversion equation #55

Closed huanranchen closed 1 year ago

huanranchen commented 1 year ago

Hi~

I derive ddim inversion equation, but it seems different from your paper: my derivation: image

equation in your paper: image

There is no coefficient where the arrow points.

So where did I go wrong? There is no source for this equation in the references you cited

huanranchen commented 1 year ago

CVPR camera ready version had fixed this. https://openaccess.thecvf.com/content/CVPR2023/papers/Mokady_NULL-Text_Inversion_for_Editing_Real_Images_Using_Guided_Diffusion_Models_CVPR_2023_paper.pdf