Diamond grid pattern caused by VAE
Credit to @ZootAllures9111
Qwen 2.1 VAE has a clear grid-like pattern in its images. It's more noticeable when you generate a high-resolution image that has people with light skin tones and zoom in on their faces.
Or just passthrough a source image to the VAE, no other processing needed
yep, there are some mitigations, GLSL node, a nodepack or re-encode to flux
https://www.reddit.com/r/StableDiffusion/comments/1wlv3tf/qwen_image_21_noisepatterningmoire_mild_workaround/
How can we determine whether this is caused by VAE or by the DIT part?
How can we determine whether this is caused by VAE or by the DIT part?
It's very well known qwen vae causes this. Even from the old 2511 qwen image
You can test by [load image > vae encode > vae decode > save image]. No other processing
So it's either save image node causes it (lol no), or the Qwen VAE does 😉
How can we determine whether this is caused by VAE or by the DIT part?
vae, it happens with krea too (it used qwen vae)
How can we determine whether this is caused by VAE or by the DIT part?
vae, it happens with krea too (it used qwen vae)
When I used some of the trained krea2, there were parallel stripes with an interval of 16px. However, it was clearly caused by the DiT part. Because Gemini helped me write a latent nyquist fix, it could be fixed.