Shelf audit: YOLO detects products, but embeddings confuse sibling SKUs

A developer building a shelf-audit tool reports that YOLO detects products well, but SKU identification with DINOv2, SigLIP2, and OpenCLIP often returns the wrong sibling SKU for same-brand variants like 1.25L vs 2L. Correct and incorrect scores overlap, making thresholds unreliable, and resizing crops to 224px erases small size text. Reference photos are few and not studio-quality.

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