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--- |
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license: mit |
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task_categories: |
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- image-segmentation |
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- object-detection |
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tags: |
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- P&ID |
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- lines |
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- pipelines |
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- engineering |
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- diagrams |
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- line-detection |
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size_categories: |
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- 1K<n<10K |
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--- |
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# P&ID Line Detection Dataset |
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This dataset contains cropped images from P&ID (Piping and Instrumentation Diagrams) |
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with line segment annotations for line detection and segmentation tasks. |
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## Dataset Description |
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- **Total source images:** 500 |
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- **Total cropped samples:** 10000 |
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- **Total line segments:** 44754 |
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- **Crops per image:** 20 |
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- **Image sizes:** Various sizes under 1000px (e.g., 300x500, 512x768, 900x900) |
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## Dataset Structure |
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Each sample contains: |
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- `file_name`: Image filename |
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- `source_image_idx`: Index of the original P&ID image |
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- `crop_idx`: Index of this crop from the source image |
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- `width`: Crop width in pixels |
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- `height`: Crop height in pixels |
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- `lines`: Dictionary with: |
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- `segments`: List of line segments as [x1, y1, x2, y2] (start and end points) |
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- `line_types`: List of line types ("solid" or "dashed") |
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- `pipelines`: List of pipeline names for each line |
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## Usage |
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```python |
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from datasets import load_dataset |
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# Load the dataset |
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dataset = load_dataset("imagefolder", data_dir="path/to/lines_dataset") |
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# Access a sample |
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sample = dataset["train"][0] |
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image = sample["image"] |
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lines = sample["lines"] |
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segments = lines["segments"] # [[x1, y1, x2, y2], ...] |
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line_types = lines["line_types"] # ["solid", "dashed", ...] |
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pipelines = lines["pipelines"] # ["5\"-EK-2648", ...] |
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# Draw lines on image |
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from PIL import ImageDraw |
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draw = ImageDraw.Draw(image) |
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for seg in segments: |
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x1, y1, x2, y2 = seg |
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draw.line([(x1, y1), (x2, y2)], fill="blue", width=3) |
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image.show() |
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``` |
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## Line Segment Format |
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Each line segment is represented as `[x1, y1, x2, y2]` where: |
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- `(x1, y1)` is the start point |
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- `(x2, y2)` is the end point |
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- Coordinates are in pixels, relative to the cropped image |
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- Only lines where **both endpoints** are fully inside the crop are included |
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## Line Types |
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- `solid`: Continuous pipeline lines |
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- `dashed`: Dashed lines (often representing signal/instrument lines) |
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## License |
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MIT License |
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