Use image_shape for SD3
#1979
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Use image_shape for SD3
#1979
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james77777778
requested review from
fchollet,
MarkDaoust and
pcoet
as code owners
fchollet
reviewed
Oct 24, 2024
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| backbone = keras_hub.models.StableDiffusion3Backbone.from_preset( | ||
| "stable_diffusion_3_medium", height=512, width=512, dtype="float16" | ||
| "stable_diffusion_3_medium", image_shape=(512, 512, 3), dtype="float16" |
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Why does the channel axis need to be specified? Other APIs that an image_shape arg only do height/width
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Is it true? I think most of the backbones in kerashub expect (h, w, c) format using image_shape.
https://github.com/search?q=repo%3Akeras-team%2Fkeras-hub%20image_shape&type=code
This change was requested by @divyashreepathihalli and I agree that it is more consistent with other backbone APIs
Additionally, even though most users won’t do this, it is still valid to train a diffusion model with the non-standard RGB images.
EDITED:
We need to specify channel axis to correctly instantiate VAE image encoder.
fchollet
approved these changes
Oct 26, 2024
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The SD3 guide needs to be updated once we have a new release of
keras-hub, as keras-team/keras-hub#1951 has been mergedcc @divyashreepathihalli