trocr base handwritten hist swe 2 EU AI Act Compliance Profile

Swedish Lion Libre

An HTR model for historical swedish developed by the Swedish National Archives in collaboration with the Stockholm City Archives, the Finnish National Archives and Jämtlands Fornskriftsällskap. The model is trained on Swedish handwriting dating from ca 1600-1900

Model Details

Model Description

• Developed by: The Swedish National Archives
• Model type: TrOCR base handwritten
• Language(s) (NLP): Historical Swedish handwriting
• License: apache-2.0
• Finetuned from model: trocr-base-handwritten

Uses

The model is trained on Swedish running-text handwriting dating from the start of the 17th century to the end of the 19th century. Like most current HTR-models it operates on a text-line level, so it's intended use is within an HTR-pipeline that segments the text into text-lines, which are transcribed by the model.

Direct Use

The model can be used without fine-tuning on all handwriting but performs best on the type of handwriting it was trained on, which is Swedish handwriting from 1600-1900. See below for detailed test and evaluation results.

Downstream Use

The model can be fine-tuned on other types of handwriting, or if you plan to use it to transcribe some specific material that is within it's domain but not included in the training data, for instance if you got a large letter collection dating from the 17th century, it can be fine-tuned on a small amount of manually transcribed in-domain data, say 20-50 letters, and then used to transcribe the entire collection.

Out-of-Scope Use

The model wont work well out-of-the-box for other languages than Swedish, and it wont work well for printed text.

How to Get Started with the Model

Use the code below to get started with the model, but bare in mind that the image has to be a single text-line.

from transformers import TrOCRProcessor,

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