TAPUSCORPUS

Description

Ground Truth dataset for French typewritten OCR

Content

154 pairs of images and PAGE XML files divided into 9 sub-corpus.

| # | name | nb of images | Date | GT for segmenter? | GT for recognizer? | link(s) to source images | | --- | :---- | :---: | :---: | :---: | :---: | ---: | | 1 | 12148-btv1b52502601r | (15) | X | y | y | https://gallica.bnf.fr/ark:/12148/btv1b52502601r | | 2 | 2013004387-1962-catalogue-dactylographi-des-enregistrements | (14) | 1962 | n | y | https://www.siv.archives-nationales.culture.gouv.fr/siv/UD/FRANIR050603/c-2cfmj84sh--fdjfx0b91tk6 | | 3 | bljd-DSN390-DSN355-DSN113(27)-DSN169 | (14) | 1922-1945 | y | y | http://bljd.sorbonne.fr/ark:/naan/a011441804309XrO1fa/e3ff656f45 , http://bljd.sorbonne.fr/ark:/naan/a011441804309Dy4ooR/8f9020bc6e , http://bljd.sorbonne.fr/ark:/naan/a01144180430809P21l/036952bd71 , http://bljd.sorbonne.fr/ark:/naan/a0114418043093CzACj/ae2ff446cd | | 4 | 12148-btv1b10581912k | (12) | 19?? | y | y | https://gallica.bnf.fr/ark:/12148/btv1b10581912k | | 5 | AN-96AP1-dossier1-pices1202-dbut-du-journal-dactylographi | (9) | 1914-1917 | y | y | https://www.siv.archives-nationales.culture.gouv.fr/siv/UD/FRANIR_050082/c-65dxt4cy4--yqhpaasluvz1 | | 6 | 12148-btv1b525062185 | (4) | X | y | y | https://gallica.bnf.fr/ark:/12148/btv1b525062185 | | 7 | 12148-btv1b10583038c | (6) | 1896 | y | y | https://gallica.bnf.fr/ark:/12148/btv1b10583038c | | 8 | 12148-btv1b10583138r | (2) | 1962 | y | y | https://gallica.bnf.fr/ark:/12148/btv1b10583138r | | 9 | 12148-btv1b53097347b | (10) | 1984 | y | y | https://gallica.bnf.fr/ark:/12148/btv1b53097347b | | 10 | europeana-random-selection | (64) | X | n | y | Europeana |

• (3): images are blurred (low quality), but readable none the less.

Unfortunately, I did not keep track of the URL related to the images taken at random from Europeana...

Annotation system

Undescored words are preceded with _such as "This is an example" will be transcribed as: "_This _is _an example".

Portions of text that are superscripted are preceded with ^ such as "1^er" will be transcribed as "1^er". If several words are superscripted, each word starts with a "^".

Crossed out words are not rendered: - words that be read under the stroke are transcribed as if not crossed out; - words that cannot be read under the stroke are transcribed like any portion of text that is not type-written.

Any portion of text that is not type-written is transcribed as a series of ~~~ (always 3). There are as many repetition of ~~~ (with a space between each instance) as there are words.

How to cite

This dataset was built and is maintained by Alix Chagu (@alix-tz). The original works and their digitization are all copyright-free, but properly annotating a corpus takes time and is a task that should be recognized. If you use any item from this corpus of ground truth, cite the dataset using the following information:

name: 'Tapuscorpus' url: 'https://github.com/HTR-United/tapuscorpus' author: 'Alix Chagu' month: 'janv' year: '2021' version: '{any version}' description: 'Ground Truth dataset for French typewritten OCR (20th century documents)' language: 'French' time: '1900-1999' hands: '30' license: - {name: 'CC-BY 4.0', url: 'https://creativecommons.org/licenses/by/4.0/'} format: PAGE-XML volume: - {count: "150", metric: pages}

This work is licensed under a Creative Commons Attribution 4.0 International License.