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---
library_name: PyLaia
license: mit
tags:
- PyLaia
- PyTorch
- atr
- htr
- ocr
- historical
- handwritten
metrics:
- CER
- WER
language:
- 'no'
datasets:
- Teklia/NorHand_v3
pipeline_tag: image-to-text
---
# PyLaia - NorHand v3
This model performs Handwritten Text Recognition in Norwegian. It was developed during the HUGIN-MUNIN project.
## Model description
The model has been trained using the PyLaia library on the [NorHand v3](https://zenodo.org/records/10255840) dataset.
Training images were resized with a fixed height of 128 pixels, keeping the original aspect ratio.
| set | lines | horizontal lines |
|:----- | ------: | ---------------: |
| train | 224,173 | 223,971 |
| val | 22,828 | 22,811 |
| test | 1,573 | 1,573 |
An external 6-gram character language model can be used to improve recognition. The language model is trained on the text from the NorHand v3 training set.
## Evaluation results
The model achieves the following results:
| set | Language model | CER (%) | WER (%) | N lines |
|:------|:---------------| ----------:| -------:|----------:|
| test | no | 7.52 | 22.99 | 1,573 |
| test | yes | 6.36 | 18.11 | 1,573 |
## How to use?
Please refer to the [PyLaia documentation](https://atr.pages.teklia.com/pylaia/usage/prediction/) to use this model.
## Cite us!
```bibtex
@inproceedings{pylaia2024,
author = {Tarride, Solène and Schneider, Yoann and Generali-Lince, Marie and Boillet, Mélodie and Abadie, Bastien and Kermorvant, Christopher},
title = {{Improving Automatic Text Recognition with Language Models in the PyLaia Open-Source Library}},
booktitle = {Document Analysis and Recognition - ICDAR 2024},
year = {2024},
publisher = {Springer Nature Switzerland},
address = {Cham},
pages = {387--404},
isbn = {978-3-031-70549-6}
}
``` |