Puzzle-Map Dataset

The Puzzle-Map Dataset is a collection of images and annotations for research on computer vision applied to jigsaw puzzles.

Directory Structure

masks/
    *.png | *.jpg

masks-raw/
    *.png | *.jpg

pieces/
    *.png | *.jpg
    annotations.json

puzzles/
    *.png | *.jpg
    annotations.json

Description

• masks/ – Processed masks used for data augmentation.
• masks-raw/ – Original masks used to generate the processed masks.
• pieces/ – Cropped puzzle piece images and their annotations.
• puzzles/ – Complete puzzle images and their annotations.

Note: This dataset does not currently provide segmentation annotations. The mask images are auxiliary data used for data augmentation.

Piece Annotations

Each image in the pieces/ directory may contain one or more annotated puzzle pieces. The annotations are stored in annotations.json.

Each piece includes the following information:

• Bounding box
• Image quality (valid)
• Piece rotation
• Side classification (INNER, OUTER, SMOOTH)
• Puzzle identification
• Puzzle row and column
• Piece angle inside the original puzzle

Example:

{
  "pieces": [
    {
      "bbox": [xmin, ymin, xmax, ymax],
      "valid": true,
      "rotation": 90,
      "sides": {
        "top": "OUTER",
        "right": "INNER",
        "bottom": "SMOOTH",
        "left": "INNER"
      },
      "puzzle": {
        "name": "puzzle_001",
        "row": 3,
        "column": 5,
        "angle": 180
      }
    }
  ]
}

Acknowledgements

Part of the images and bounding box annotations included in the pieces/ directory were built upon publicly available datasets from Roboflow Universe.

The original authors deserve full credit for collecting and publishing these datasets.

During the development of the Puzzle-Map Dataset, these original annotations were extended with additional information, including:

• Image quality labels (valid)
• Piece rotation
• Piece side classification (INNER, OUTER, SMOOTH)
• Puzzle identification
• Puzzle position (row and column)
• Piece orientation angle

These additional annotations were created specifically for the Puzzle-Map project.

Original Datasets

Puzzle Pieces Detection

• https://universe.roboflow.com/petro-telishevskyi-ewaoc/puzzle-pieces-detection

@misc{puzzle-pieces-detection_dataset,
  title = {Puzzle pieces detection Dataset},
  type = {Open Source Dataset},
  author = {Petro Telishevskyi},
  howpublished = {\url{https://universe.roboflow.com/petro-telishevskyi-ewaoc/puzzle-pieces-detection}},
  url = {https://universe.roboflow.com/petro-telishevskyi-ewaoc/puzzle-pieces-detection},
  journal = {Roboflow Universe},
  publisher = {Roboflow},
  year = {2023},
  month = {aug}
}

Puzzle Dataset

• https://universe.roboflow.com/class-i1e8t/puzzle-vrkx6

@misc{puzzle-vrkx6_dataset,
  title = {puzzle Dataset},
  type = {Open Source Dataset},
  author = {class},
  howpublished = {\url{https://universe.roboflow.com/class-i1e8t/puzzle-vrkx6}},
  url = {https://universe.roboflow.com/class-i1e8t/puzzle-vrkx6},
  journal = {Roboflow Universe},
  publisher = {Roboflow},
  year = {2022},
  month = {aug}
}

Citation

If you use this dataset in your research, please cite both this repository and the original Roboflow Universe datasets listed above.