LLM-as-Judge for OCR Quality Assessment in Digital Libraries: A Reference-Free Approach
Optical character recognition (OCR) quality assessment has depended on reference-based metrics (CER/WER), which require costly transcription. We ask: can an LLM supply a reference-free, text-only signal for OCR readability? Using 90 stratified passages from 53 scans of 17 English works in RETAS, we score OCR text with...