Datasets:

Sigurdur
/

icelandic-ocr-benchmark

doc_id stringclasses 1 value	sequence int16 0 99	alto stringlengths 3.29k 54.8k	page stringlengths 2.84k 47.2k
finepdfs-isl-M	0	<?xml version="1.0" encoding="UTF-8"?> <alto xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.loc.gov/standards/alto/ns-v4#" xsi:schemaLocation="http://www.loc.gov/standards/alto/ns-v4# http://www.loc.gov/standards/alto/v4/alto-4-2.xsd"> <Description> <MeasurementUnit>pixel</Mea...	<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <PcGts xmlns="http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15 http://schema.primaresearch.org/PAGE/gts/pageco...
finepdfs-isl-M	1	<?xml version="1.0" encoding="UTF-8"?> <alto xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.loc.gov/standards/alto/ns-v4#" xsi:schemaLocation="http://www.loc.gov/standards/alto/ns-v4# http://www.loc.gov/standards/alto/v4/alto-4-2.xsd"> <Description> <MeasurementUnit>pixel</Mea...	<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <PcGts xmlns="http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15 http://schema.primaresearch.org/PAGE/gts/pageco...
finepdfs-isl-M	2	<?xml version="1.0" encoding="UTF-8"?> <alto xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.loc.gov/standards/alto/ns-v4#" xsi:schemaLocation="http://www.loc.gov/standards/alto/ns-v4# http://www.loc.gov/standards/alto/v4/alto-4-2.xsd"> <Description> <MeasurementUnit>pixel</Mea...	<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <PcGts xmlns="http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15 http://schema.primaresearch.org/PAGE/gts/pageco...
finepdfs-isl-M	3	<?xml version="1.0" encoding="UTF-8"?> <alto xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://www.loc.gov/standards/alto/ns-v4#" xsi:schemaLocation="http://www.loc.gov/standards/alto/ns-v4# http://www.loc.gov/standards/alto/v4/alto-4-2.xsd"> <Description> <MeasurementUnit>pixel</Mea...	<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <PcGts xmlns="http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://schema.primaresearch.org/PAGE/gts/pagecontent/2019-07-15 http://schema.primaresearch.org/PAGE/gts/pageco...
finepdfs-isl-M	4	"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<alto xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-inst(...TRUNCATED)	"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<PcGts xmlns=\"http://schema.primare(...TRUNCATED)
finepdfs-isl-M	5	"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<alto xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-inst(...TRUNCATED)	"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<PcGts xmlns=\"http://schema.primare(...TRUNCATED)
finepdfs-isl-M	6	"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<alto xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-inst(...TRUNCATED)	"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<PcGts xmlns=\"http://schema.primare(...TRUNCATED)
finepdfs-isl-M	7	"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<alto xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-inst(...TRUNCATED)	"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<PcGts xmlns=\"http://schema.primare(...TRUNCATED)
finepdfs-isl-M	8	"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<alto xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-inst(...TRUNCATED)	"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<PcGts xmlns=\"http://schema.primare(...TRUNCATED)
finepdfs-isl-M	9	"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<alto xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-inst(...TRUNCATED)	"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>\n<PcGts xmlns=\"http://schema.primare(...TRUNCATED)

End of preview. Expand in Data Studio

Dataset Card for Icelandic OCR Benchmark

Dataset Details

Dataset Description

Icelandic OCR Benchmark is a ground-truth dataset for evaluating OCR accuracy on Icelandic-language documents. It consists of manually transcribed page images with matching layout annotations (text regions, line polygons, baselines) in both ALTO and PAGE XML.

Curated by: Sigurdur Haukur Birgisson
Language(s): Icelandic (is)
License: CC BY-SA 4.0

Dataset Sources

The page images were sampled from the Icelandic subset of HuggingFaceFW/finepdfs (document id finepdfs-isl-M). Text regions, lines, and baselines were segmented and manually transcribed using eScriptorium, then exported to this dataset.

Uses

Direct Use

Benchmarking OCR engines against ground-truth Icelandic text, and evaluating line/region segmentation against the included polygons and baselines.

Out-of-Scope Use

This is currently a single 100-page document, not a broad corpus — treat it as a benchmark/spot-check sample rather than a general-purpose Icelandic OCR training set. More documents may be added as additional ground truth is transcribed.

Dataset Structure

Each row is one page:

image: the full page scan
doc_id: identifier of the source document (finepdfs-isl-M)
sequence: the page's order within the document
alto: the page's transcription and layout as ALTO XML (v4)
page: the page's transcription and layout as PAGE XML

To uniquely identify a page, use doc_id together with sequence.

The dataset contains 100 pages and about 3,550 transcribed text lines (~33,000 words).

Dataset Creation

Source Data

Page images sampled from the Icelandic subset of HuggingFaceFW/finepdfs.

Annotations

Text regions and lines were segmented and manually transcribed by hand in eScriptorium. alto and page were generated from that transcription; no character-level OCR confidence data is included since transcription was manual.