Clarification: SigLIP Image Transform

[siddk]

Thanks for open-sourcing the SigLIP models!

Clarification question: in the demo IPython notebook, the image transform function has the form pp_img = pp_builder.get_preprocess_fn(f'resize({RES})|value_range(-1, 1)').

Looking at the code here, this seems to be resizing an image to RES x RES (warping aspect ratio).

Is this the expected behavior? Were the SigLIP models trained with this transform (aspect ratio warping)?