Datasetpublic

tadad/kat57-ground-truth

Kat57 ground truth Hugging Face conversion of Lund University Library's Kat57 ground-truth release: 10,695 scanned catalogue cards with manually corrected PAGE XML transcriptions. The cards come from Catalogue -1957, Lund University Library's alphabetical catalogue of holdings published through 1957. They contain a mixture of typewritten and handwritten text in several languages. Fields image: original PNG card scan reference: line transcriptions joined in PAGE… See the full description on the dataset page: https://huggingface.co/datasets/tadad/kat57-ground-truth.

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Dataset Card

Kat57 ground truth

Hugging Face conversion of Lund University Library's Kat57 ground-truth release: 10,695 scanned catalogue cards with manually corrected PAGE XML transcriptions.

The cards come from Catalogue -1957, Lund University Library's alphabetical catalogue of holdings published through 1957. They contain a mixture of typewritten and handwritten text in several languages.

Fields

—image: original PNG card scan
—reference: line transcriptions joined in PAGE XML document order
—lines: individual PAGE XML line transcriptions
—page_xml: original PAGE XML, including line geometry
—id, drawer_id, card_id, source_image: source identifiers

Conversion

The source archive contains 10,695 matched PNG/XML pairs. This copy is stored in 84 Parquet shards and was produced by the reproducible Kat57 converter in `tadad/ocr-bench`. No OCR or synthetic labels were introduced: reference, lines, and page_xml are derived directly from Lund's human-transcribed PAGE XML.

Source ZIP MD5: 0895d5785cd0ddf9f9c6488484ac447e.

License and attribution

The source dataset is CC BY 4.0. Credit Maria Hedberg and Lund University Library, and cite the Zenodo record when using this conversion. This repository is a convenience conversion and is not an official Lund University Library publication.