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suxuann / ddib

Dual Diffusion Implicit Bridges for Image-to-Image Translation. ICLR 2023.
MIT License
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The noise image obtained by inverse DDIM is not like a Gaussian distribution! #13

Open whisney opened 1 year ago

whisney commented 1 year ago

I try to use DDIB to achieve the MR-CT image translation. I have trained diffusion models for unconditional generation of MR and CT images respectively. Given an MR image, I use MR diffusion model and inverse DDIM to obtain the corresponding noise image in latent space (steps=1000, the total step of trained diffusion model is also 1000). However, this noise image does not seem like an isotropic noise distribution (as shown in Fig. 1 in the paper):

图片1

Taking the obtained noise image as the input of CT diffusion model and sampling with forward DDIM, the generated CT image is not ideal.

Bayern4ever-dot commented 1 year ago

Could you please share your procedure of training on your own datasets?I would appreciate it if you do so!

xiayhh commented 1 year ago

I would also appreciate it if you could share a little about your own training process.

hello-world-hhh commented 3 months ago

I also encountered the same issue