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| <a href="README.md">English</a> | <a href="README_ZH.md">中文</a> |
| </p> |
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| # Introduction |
| The original images of this dataset are from [DocLayNet-v1.2](https://huggingface.co/datasets/docling-project/DocLayNet-v1.2). You can run `src/1_save_img_from_parquet.py` to convert the parquet files into images. |
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| # Page Number Cropping |
| This dataset uses the `yolo11-medium-page-best-quant-ir9.onnx` weights from [Here](https://huggingface.co/wqzh/DocLayout-PageNumDet/tree/main/models) to detect page number bounding boxes from the images obtained above, and then crop out the page number regions (detection errors may exist, as no post-processing was applied by the author). |
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| The cropped images are saved in the `images-crops` directory, and the detection results are saved in the `images-labels` directory. The author added a constraint: the YOLO-format label file is only saved when exactly one page number box is detected, while crops of all detected boxes are retained. Therefore, the number of files in `images-crops` is greater than that in `images-labels`. |
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| You can run `src/2_det_onnx_wo_opencv_cuda.py` to detect page numbers, crop images, and save label files. |
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| ```shell |
| find images-labels -type f -name "*.txt" | wc -l |
| find images-crops -type f -name "*.jpg" | wc -l |
| ``` |
| - Number of `.txt` files in `images-labels`: 15902 |
| - Number of `.jpg` files in `images-crops`: 17203 |
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| # Page Number Concatenation |
| `src/3_concat_crops_by_pages.py` concatenates all cropped images from `images-crops` and saves them in the `images-crops-concat` directory, so you can preview the entire dataset. |
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| Example |
| <img src="images-crops-concat/train-00005_p1.png" width="500"> |
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| Note: If you intend to use the label files from this dataset, they need to be cleaned separately. |
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| # Page Number Coordinate Distribution |
| `src/4_visualize_yolo_txt_distribution.py` visualizes the distribution of bounding box centers from all label files in `images-labels`. |
| <img src="yolo_centers_distribution.png" width="500"> |
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