Fix Pillow 12.0.0 compatibility for uint16 multi-channel images #11149
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The old OneDrive API v1.0 URLs were returning HTTP 400 errors. Updated to new OneDrive share links from the official Microsoft Research page. Fixes tensorflow#11136
Pillow 12.0.0 removed support for creating multi-channel (RGB/RGBA) images from uint16 numpy arrays via fromarray(). The _fromarray_typemap no longer includes keys like ((1, 1, 3), '<u2') and ((1, 1, 4), '<u2'). This change converts uint16 RGB/RGBA images to uint8 in create_thumbnail() by scaling from 16-bit (0-65535) to 8-bit (0-255) range before passing to PIL's fromarray(). Single-channel uint16 images maintain original behavior. Fixes tensorflow#11148
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Description
Fixes #11148
This PR fixes test failures in
ImageFeatureTestwhen using Pillow 12.0.0. The tests were failing withTypeError: Cannot handle this data type: (1, 1, 3), <u2for uint16 multi-channel images.Root Cause
Pillow 12.0.0 removed support for creating multi-channel (RGB/RGBA) images from uint16 numpy arrays via
fromarray(). The_fromarray_typemapno longer includes type keys like((1, 1, 3), '<u2')and((1, 1, 4), '<u2').Changes
create_thumbnail()intensorflow_datasets/core/utils/image_utils.py'I;16'mode behaviorTesting
ImageFeatureTesttests now pass with Pillow 12.0.0Compatibility