| ---
|
| dataset_info:
|
| features:
|
| - name: image_name
|
| dtype: string
|
| - name: image
|
| dtype: image
|
| - name: labelme
|
| dtype: string
|
| - name: obb
|
| dtype: string
|
| splits:
|
| - name: train
|
| num_bytes: 1854583534
|
| num_examples: 5154
|
| - name: validation
|
| num_bytes: 446502719
|
| num_examples: 1288
|
| configs:
|
| - config_name: default
|
| data_files:
|
| - split: train
|
| path: data/train.parquet
|
| - split: validation
|
| path: data/validation.parquet
|
| license: cc-by-4.0
|
| task_categories:
|
| - object-detection
|
| language:
|
| - km
|
| size_categories:
|
| - 1K<n<10K
|
| ---
|
| # Graph Dataset: Image, LabelMe, and OBB
|
|
|
| This dataset contains graph/chart images paired with LabelMe JSON polygon
|
| annotations and OBB text annotations. Rows are reproducibly divided into
|
| 80% training and 20% validation splits.
|
|
|
| ## Dataset Summary
|
|
|
| | Metric | Count |
|
| | --- | ---: |
|
| | Matched image/LabelMe/OBB rows | 6442 |
|
| | Train rows | 5154 |
|
| | Validation rows | 1288 |
|
| | Source image files | 6442 |
|
| | Source LabelMe JSON files | 6442 |
|
| | Source OBB text files | 6442 |
|
| | Train row groups | 52 |
|
| | Validation row groups | 13 |
|
| | Combined parquet size | 2194.49 MB |
|
|
|
| ## Columns
|
|
|
| | Column | Type | Description |
|
| | --- | --- | --- |
|
| | `image_name` | string | Source filename without extension |
|
| | `image` | image | Image decoded by Hugging Face Datasets |
|
| | `labelme` | string | LabelMe annotation serialized as JSON |
|
| | `obb` | string | OBB annotation text from the matching `.txt` file |
|
|
|
| ## Load the Dataset
|
|
|
| ```python
|
| import json
|
|
|
| from datasets import load_dataset
|
|
|
| dataset = load_dataset(
|
| "parquet",
|
| data_files={
|
| "train": "data/train.parquet",
|
| "validation": "data/validation.parquet",
|
| },
|
| )
|
| row = dataset["train"][0]
|
| image = row["image"]
|
| labelme = json.loads(row["labelme"])
|
| obb_lines = row["obb"].splitlines()
|
| ```
|
|
|
| The parquet file is written in bounded row groups by `create_hf_parquet_dataset.py`
|
| to avoid constructing the complete image dataset in memory during export.
|
|
|
| **Last updated:** 2026-05-25
|
|
|
