Corvus-OCR-Caption-Mix

# **Corvus-OCR-Caption-Mix**

**Corvus-OCR-Caption-Mix** is a high-quality, compact image-caption dataset designed for training and evaluating image-to-text models. This collection is derived and optimized from the larger [`BLIP3o/BLIP3o-Pretrain-Long-Caption`](https://huggingface.co/datasets/BLIP3o/BLIP3o-Pretrain-Long-Caption), with a focus on long-form captions and mixed OCR tasks across a variety of image types.

## Dataset Summary

The dataset spans over 229,000 image-caption pairs and provides a balanced blend of:

* OCR-rich documents featuring mathematical expressions, LaTeX, and technical notations
* Descriptive natural scenes and artistic visuals with long-form captions
* Bilingual content in English and Chinese
* Multi-domain examples suitable for both document and scene understanding

## Features

* **Images:** A diverse selection including handwritten formulas, printed text, documents, scenic photos, and more
* **Captions:** Long-form textual content with natural language, LaTeX, mathematical expressions, or technical information
* **Languages:** English and Chinese
* **Modality:** Image-to-Text (OCR + Caption)
* **Data Format:** Apache Arrow
* **License:** Apache 2.0

## Dataset Details

* **Split:** `train`
* **Rows:** \~230,000
* **Storage Size:** 4.68 GB (first 49.9k rows)
* **Estimated Total Size:** \~20+ GB for all rows

| Column | Type | Description |
| ------ | ------ | --------------------------------------- |
| image | image | Input image (scene/document/screenshot) |
| text | string | Caption text or OCR-extracted content |

## Use Cases

* OCR pretraining and evaluation
* Vision-language modeling on complex document layouts
* LaTeX and mathematical expression extraction
* Long-form captioning across real-world and academic content
* Cross-lingual captioning and translation modeling

## Related Models

Models fine-tuned on this dataset:

* [Pollux-Caption-VL-2B](https://huggingface.co/prithivMLmods/Pollux-Caption-VL-2B) – A Qwen2.5-VL-based model optimized for OCR captioning tasks

## Citation

If you use this dataset, please cite the original dataset:

> **BLIP3o/BLIP3o-Pretrain-Long-Caption**
> [https://huggingface.co/datasets/BLIP3o/BLIP3o-Pretrain-Long-Caption](https://huggingface.co/datasets/BLIP3o/BLIP3o-Pretrain-Long-Caption)

And reference this curated derivative:

> **Corvus-OCR-Caption-Mix by prithivMLmods**

## Related Collections

This dataset is part of the [`Corvus-OCR-Caption-Mix`](https://huggingface.co/collections/prithivMLmods/Corvus-OCR-Caption-Mix) collection, which includes multiple subsets optimized for variable-dimension OCR captioning use cases.