Datasets:
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README.md
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---
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license:
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task_categories:
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- object-detection
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- image-to-text
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- synthetic-data
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- synthdog
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- hdf5
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pretty_name: OCR Synthetic Multilingual v1
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size_categories:
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## Overview
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This dataset
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## Languages
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> Numbers in parentheses are the number of `.h5` files per split.
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## Directory Layout
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```
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| Test | 221,867 samples (77 files) |
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| Validation | 220,157 samples (77 files) |
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## Citation
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If you use this dataset, please cite:
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```bibtex
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@
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title={OCR-
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}
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```
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---
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license: cc-by-4.0
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task_categories:
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- object-detection
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- image-to-text
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- synthetic-data
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- synthdog
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- hdf5
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- nvidia
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- nemotron
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pretty_name: OCR Synthetic Multilingual v1
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size_categories:
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- 10M<n<100M
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## Overview
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Large-scale synthetically generated OCR training dataset for multilingual text detection and recognition. The data was produced using a heavily modified and extended version of [SynthDoG](https://github.com/clovaai/donut/tree/master/synthdog) (Synthetic Document Generator), originally introduced in the [Donut](https://github.com/clovaai/donut) project by Kim et al.
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This dataset was used to train [**Nemotron OCR v2**](https://huggingface.co/nvidia/nemotron-ocr-v2), a state-of-the-art multilingual OCR model that is part of the [NVIDIA NeMo Retriever](https://www.nvidia.com/en-us/ai-data-science/products/nemo/) collection.
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## Languages
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> Numbers in parentheses are the number of `.h5` files per split.
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## Related Model
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This dataset was created to train the detection, recognition, and relational components of [**Nemotron OCR v2**](https://huggingface.co/nvidia/nemotron-ocr-v2). See the model card for architecture details, evaluation results, and usage instructions.
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## Directory Layout
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```
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| Test | 221,867 samples (77 files) |
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| Validation | 220,157 samples (77 files) |
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## Acknowledgements
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The synthetic data generation pipeline is based on [SynthDoG](https://github.com/clovaai/donut/tree/master/synthdog) from the Donut project, with substantial modifications to support additional languages, custom rendering effects, structured bounding-box annotations (word/line/paragraph levels with reading-order graphs), and HDF5 output.
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## Citation
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If you use this dataset, please cite both this dataset and the original SynthDoG work:
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```bibtex
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@misc{chesler2026ocr_synthetic_multilingual,
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title = {{OCR-Synthetic-Multilingual-v1}},
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author = {Chesler, Ryan},
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year = {2026},
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publisher = {NVIDIA},
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url = {https://huggingface.co/datasets/nvidia/OCR-Synthetic-Multilingual-v1},
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note = {Synthetically generated multilingual OCR dataset built on a heavily modified SynthDoG pipeline}
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}
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```
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```bibtex
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@inproceedings{kim2022donut,
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title = {{OCR-free Document Understanding Transformer}},
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author = {Kim, Geewook and Hong, Teakgyu and Yim, Moonbin and Nam, JeongYeon and Park, Jinyoung and Yim, Jinyeong and Hwang, Wonseok and Yun, Sangdoo and Han, Dongyoon and Park, Seunghyun},
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booktitle = {European Conference on Computer Vision (ECCV)},
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year = {2022},
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publisher = {Springer}
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}
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```
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