items in it. append can just place the item in the existing backing
Publication date: 28 February 2026
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When shape similarity lies: size-ratio artifacts in confusable detection Confusable detection pipelines normalise characters to a fixed canvas before measuring similarity. This hides natural size differences. We re-rendered 2,203 scored pairs (TR39 baseline + novel discoveries) at their original sizes and found 254 with width or height ratios above 2x.
Claudia Kenyatta CBE and Emma Squire CBE, co-CEOs of Historic England, said it was a "remarkable discovery".