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GT-Free OCR Metrics: A Reference-Free Evaluation Framework for Document OCR Systems
A render-and-compare framework benchmarks 147 reference-free visual metrics for document OCR, with the best composite achieving ρ = 0.494 correlation to ground-truth quality. Silent region misclassification artificially preserves visual similarity, suppressing correlation when masking is omitted.
Paris Poster Session 1, Wed, Dec 9, 12:30 PM–2:30 PM, Paris Poster Hall · Published 2026
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AI panel: 16 of 20 reviewers recommend it
lenient 5/5
medium 8/10
strict 3/5