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devmandan
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syn10k-huawei-barcodes

supersede derived_gt/derived_gt.jsonl: peer-consensus derived payload truth re-minted with a wider panel for 6827 images (6580 kept, 0 completed, 247 added; a superset of the 974c629f9934 mint) (qr-decode-bench); card section appended

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metadata

license: cc-by-4.0
pretty_name: Bodnár-Huawei Syn10k — synthetic + real barcode images with masks
task_categories:
  - image-segmentation
  - object-detection
tags:
  - qr-code
  - barcode
  - segmentation
  - synthetic
size_categories:
  - 10K<n<100K
configs:
  - config_name: warp2014
    data_files:
      - split: train
        path: data/warp2014/train*.parquet
  - config_name: huawei
    data_files:
      - split: train
        path: data/huawei/train*.parquet

Bodnár-Huawei Syn10k

A mirror of the syn10k_plus_huawei barcode dataset from the Szeged group (Bodnár, Grósz, Tóth), repackaged as parquet with each image joined to its ground-truth mask in the same row.

Released under CC BY 4.0, so this mirror is permitted with attribution.

Configs

config	rows	content	with mask
`warp2014`	10,000	synthetic warped barcode images	10,000
`huawei`	98	real photographs	98

Every image has its mask — the pairing was verified by stem, and zero images in either config are missing one.

Fields

field	notes
`image`	the picture (JPEG)
`mask`	the ground-truth mask (PNG)
`file_name`, `stem`	original filename and its stem
`subset`	`warp2014` or `huawei`
`has_mask`	always true in this build; kept so the schema stays honest if a future revision has gaps

Two notes on how to read this

The split name is a container, not a protocol. Both configs expose a single split called train because HuggingFace requires a split name — it does not encode the authors' intended train/test partition. warp2014 is synthetic and huawei is real photographs, which is the natural synthetic-train / real-test arrangement, but this mirror does not assert that the authors used it that way. Consult the source publication before reporting numbers as theirs.

This is a barcode dataset, not a QR-only one. It is included in a QR collection because it is standard in the barcode-localisation literature and is one of the few sets shipping pixel masks. Check the masks for what you need rather than assuming every symbol is a QR code.

Usage

from datasets import load_dataset

syn  = load_dataset("devmandan/syn10k-huawei-barcodes", "warp2014", split="train")
real = load_dataset("devmandan/syn10k-huawei-barcodes", "huawei",   split="train")
syn[0]["image"], syn[0]["mask"]      # PIL images, aligned

Citation

Original source: https://www.inf.u-szeged.hu/~bodnaar/barcode_database/syn10k_plus_huawei.zip

@misc{bodnar_syn10k,
  title  = {Syn10k + Huawei barcode database},
  author = {Bodn\'ar, P\'eter and Gr\'osz, Tam\'as and T\'oth, L\'aszl\'o},
  note   = {Synthetic and real barcode images with ground-truth masks},
  url    = {https://www.inf.u-szeged.hu/~bodnaar/barcode_database/}
}

Licence: CC BY 4.0 — https://creativecommons.org/licenses/by/4.0/ Please cite the authors above, not this mirror.

Derived ground truth (qr-decode-bench)

derived_gt/derived_gt.jsonl was ADDED to this repository on 2026-09-01; no existing file was modified (this section was appended to the card). It records, for each image whose payload this dataset does not publish and on which at least two independent QR decoders agreed, what every decoder of a panel decoded on that image — as sha256 digests of the payload bytes, with the payload text beside them only where no identifier detector fires on it — so that a benchmark can score a decoder against what the OTHER decoders established (per-image leave-one-out, quorum 2), never against its own output.

This is truth DERIVED by decoder consensus, not published by the dataset's authors; the benchmark that uses it marks it with †. Agreement between independent implementations is strong evidence, not proof of what a symbol encodes.

derived at revision b85ce5ce82d34f4515bf5c90b60d2b680defd401 from the data files' recorded inventory (sha256 fa6cf1fdb7d7c8d9d91962eb9b9fd02b8206c57c1c405ea26b893053bc2a2ac8); the data files are unchanged by this commit
panel: apple-vision (apple-vision macOS 14.3.1 VNDetectBarcodesRequest rev4), boofcv (boofcv 0.43.1 (PyBoof jar; java 22.0.1)), opencv (opencv 4.12.0 (QRCodeDetector)), opencv-aruco (opencv 4.12.0 (QRCodeDetectorAruco)), quirc (quirc 1.0 (vendored 927d680904dc)), wechat (wechat_qrcode (opencv-contrib 4.12.0; models 8ae41acb,cc49b8c9,e5d36889,e8acfc39)), zxing-cpp (zxing-cpp 3.1.1)
images with derived truth: 6580 of 10098 examined (3518 without a quorum, 0 voided)
payloads: 6516 established, 0 carried as text, 0 as digest only because an identifier detector fired, 6516 as digest only because the payload is the image's own id (image records are keyed by sha256 of the id)
format qrb-derived-gt-peer/1: JSON lines — one header (rule, quorum, panel versions, yield, corroboration, privacy scan), one line per payload, one line per image

Derived ground truth (qr-decode-bench)

derived_gt/derived_gt.jsonl was ADDED to this repository on 2026-10-01; no existing file was modified (this section was appended to the card). It records, for each image whose payload this dataset does not publish and on which at least two independent QR decoders agreed, what every decoder of a panel decoded on that image — as sha256 digests of the payload bytes, with the payload text beside them only where no identifier detector fires on it — so that a benchmark can score a decoder against what the OTHER decoders established (per-image leave-one-out, quorum 2), never against its own output.

derived at revision 974c629f99349b3112ad68b88fbbff71c68d1122 from the data files' recorded inventory (sha256 fa6cf1fdb7d7c8d9d91962eb9b9fd02b8206c57c1c405ea26b893053bc2a2ac8); the data files are unchanged by this commit
panel: apple-vision (apple-vision macOS 14.3.1 VNDetectBarcodesRequest rev4), aspose-net (aspose-net 26.8 key=trial decode_type=QR), boofcv (boofcv 0.43.1 (PyBoof jar; java 22.0.1)), dynamsoft-dbr (dynamsoft-dbr 11.6.3000 (11.6.30.0818 (Algorithm 11.6.30.28649)) key=trial template=PT_READ_BARCODES formats=QR), mlkit (barcode-scanning 17.3.0 (bundled); Android API 34; arm64-v8a), mmd-hyb-gen (mmd v0.96 8ead9b0fa1d1 effort=64 hyb=sprint deep=1500@150000kpe view=12000kpe seedcap=5 deep.pyr_cap=1000000 deep.futility=1 deep.spill=0 deep.ccfind=0 prefix=1500@2800kpe prefix.pyr_cap=500000 prefix.futility=1 prefix.spill=0 prefix.ccfind=0 esc=850 det=heatnet_mixe3@ded00e97ea9c hyb_ref=refiner_v0@7e2f3313294b ort=1.30.0 cv2=4.12.0), opencv (opencv 4.12.0 (QRCodeDetector)), opencv-aruco (opencv 4.12.0 (QRCodeDetectorAruco)), quirc (quirc 1.0 (vendored 927d680904dc)), scanbot-linux (scanbot-linux 9.0.0 key=trial symbology=QR:restricted-at-api), scandit-linux (scandit-linux version-unreported key=trial symbology=QR:restricted-at-api), wechat (wechat_qrcode (opencv-contrib 4.12.0; models 8ae41acb,cc49b8c9,e5d36889,e8acfc39)), zxing-cpp (zxing-cpp 3.1.1)
images with derived truth: 6827 of 6919 examined (92 without a quorum, 0 voided)
payloads: 6760 established, 0 carried as text, 0 as digest only because an identifier detector fired, 6760 as digest only because the payload is the image's own id (image records are keyed by sha256 of the id)
format qrb-derived-gt-peer/2: JSON lines — one header (rule, quorum, panel versions, yield, corroboration, privacy scan), one line per payload, one line per image
SUPERSEDES the earlier derivation at revision 974c629f99349b3112ad68b88fbbff71c68d1122 on the same image bytes: every image it established is established here with a superset of its payloads and no void (6580 kept identical, 0 completed, 247 added). Panel members whose reads are committed benchmark rows rather than live decodes are listed in the header's panel_sources; a null read means the member never examined that image.