PubMed-OCR: PMC Open Access OCR Annotations
- URL: http://arxiv.org/abs/2601.11425v1
- Date: Fri, 16 Jan 2026 16:44:50 GMT
- Title: PubMed-OCR: PMC Open Access OCR Annotations
- Abstract summary: PubMed-OCR is an OCR-centric corpus of scientific articles derived from PubMed Central Open Access PDFs.<n>Each page image is annotated with Google Cloud Vision and released in a compact schema with word, line, and paragraph-level bounding boxes.<n>The corpus spans 209.5K articles (1.5M pages; 1.3B words) and supports layout-aware modeling, coordinate-grounded QA, and evaluation of OCR-dependent pipelines.
- Score: 0.4277619369763994
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: PubMed-OCR is an OCR-centric corpus of scientific articles derived from PubMed Central Open Access PDFs. Each page image is annotated with Google Cloud Vision and released in a compact JSON schema with word-, line-, and paragraph-level bounding boxes. The corpus spans 209.5K articles (1.5M pages; ~1.3B words) and supports layout-aware modeling, coordinate-grounded QA, and evaluation of OCR-dependent pipelines. We analyze corpus characteristics (e.g., journal coverage and detected layout features) and discuss limitations, including reliance on a single OCR engine and heuristic line reconstruction. We release the data and schema to facilitate downstream research and invite extensions.
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