Enhanced Parquet Edition: CASIAv1: CASIA Image Tampering Detection Evaluation Database

This repository packages the CASIAv1 evaluation archives distributed by ForgeryVCR into Hugging Face Parquet. It contains 1,720 images: 800 real and 920 tampered images, with 920 supplied pixel masks and per-sample metadata.

The source images are already preprocessed to 832 × 832. This edition preserves the supplied PNG image and mask bytes.

Subsets

Config	Split	Rows	Image size	Pixel masks	Parquet files
casiav1	test	1,720	832 × 832	920 supplied	6

Columns

• image: the supplied RGB image, decoded with the Hugging Face Image feature.
• mask: the supplied grayscale annotation; white 255 marks edited regions and black 0 marks background. Intermediate grayscale values are preserved. Authentic images have no supplied mask and use null.
• label: image-level authenticity label, 0 = real, 1 = fake.
• manipulation: real or tampered.
• sample_id, source_image_path: the image path relative to the extracted release directory.
• source_split: test, following the source repository's evaluation grouping.
• filename_source_id: the original image filename stem.
• source_mask_path: the mask path relative to the extracted release directory, or null for authentic images.
• width, height: dimensions of the supplied image in pixels.
• has_mask: whether a pixel annotation is supplied.

Metadata Files

Each configuration includes stats.json with split counts, manipulation counts, image dimensions, mask statistics, and Parquet shard paths and sizes.

The root inventory.json collects these statistics and records the source archives, total row count, shard count, and encoded byte sizes.

Citation

If you reference CASIA, please cite the original paper:

@inproceedings{dong2013casia,
  title={CASIA Image Tampering Detection Evaluation Database},
  author={Dong, Jing and Wang, Wei and Tan, Tieniu},
  booktitle={2013 IEEE China Summit and International Conference on Signal and Information Processing},
  pages={422--426},
  year={2013},
  doi={10.1109/ChinaSIP.2013.6625374}
}

Dataset Export

This Parquet edition reorganizes the ForgeryVCR-distributed CASIAv1 archives and adds per-sample metadata. Please also reference this dataset repository when using the packaged version.

@misc{thanejoss_casiav1_2026,
  author={{ThaneJoss}},
  title={{CASIAv1}},
  year={2026},
  publisher={Hugging Face},
  url={https://huggingface.co/datasets/ThaneJoss/CASIAv1},
  note={Dataset available on Hugging Face}
}