| --- |
| license: cc-by-4.0 |
| pretty_name: QR-DN1.0 — Distorted and Noisy QR Codes |
| task_categories: |
| - image-to-image |
| - image-to-text |
| tags: |
| - qr-code |
| - denoising |
| - restoration |
| - barcode |
| size_categories: |
| - 1K<n<10K |
| configs: |
| - config_name: aligned |
| data_files: |
| - split: train |
| path: data/aligned/train*.parquet |
| - split: test |
| path: data/aligned/test*.parquet |
| - config_name: source_qr |
| data_files: |
| - split: train |
| path: data/source_qr/train*.parquet |
| - split: test |
| path: data/source_qr/test*.parquet |
| --- |
| |
| # QR-DN1.0 — Distorted and Noisy QRs |
|
|
| A **mirror** of QR-DN1.0 (Mendeley Data, DOI |
| [10.17632/t2bdr663ms.2](https://doi.org/10.17632/t2bdr663ms.2)), repackaged as |
| parquet with the five aligned image variants joined into single rows. |
|
|
| Released by its authors under **CC BY 4.0**, which is what makes this mirror |
| straightforwardly permitted with attribution. |
|
|
| ## Configs |
|
|
| ### `aligned` — 1,500 train / 750 test |
|
|
| Five variants of the same sample, one row each. The upstream directories were |
| verified to carry **identical stems**, set-equal across all five, so the join is |
| exact rather than approximate — no row is dropped or padded. |
|
|
| | column | upstream directory | |
| |---|---| |
| | `target` | `target/` | |
| | `target_quad` | `target quad/` | |
| | `extracted_one` | `extracted One/` | |
| | `extracted_quad` | `extracted Quad/` | |
| | `extracted_voted` | `extracted Voted/` | |
|
|
| ### `source_qr` — 50 train / 25 test |
| |
| The `QR/` directory: source codes named `ht1…htN`, on a naming scheme unrelated |
| to the aligned samples. |
| |
| ## An honest limit on this card |
| |
| **The semantics of the five variants are not documented here**, because this is |
| a mirror and the packager did not establish which variant is input, which is |
| ground truth, or what "One", "Quad" and "Voted" denote as methods. The names are |
| preserved exactly as published so they can be matched against the paper. For the |
| authoritative description, go to the DOI. If you want a card that explains the |
| protocol, that should come from someone who has read the paper, not from the |
| directory listing. |
| |
| ## Usage |
| |
| ```python |
| from datasets import load_dataset |
|
|
| ds = load_dataset("devmandan/qr-dn1.0", "aligned", split="train") |
| row = ds[0] |
| row["target"], row["extracted_voted"] # PIL images, same sample |
|
|
| src = load_dataset("devmandan/qr-dn1.0", "source_qr", split="train") |
| ``` |
| |
| ## Single images |
| |
| `images/` holds single JPEG files of the test-split pictures that the QR Scan Difficulty page links to as examples, |
| so a reader can open one exact picture and try it with a phone. Each is byte-identical to the image in this dataset's |
| Parquet tables: `images/test/<sample_id>_<variant>.jpg` (for example `1516_extracted_voted.jpg`), and source codes |
| as `images/source_qr/<name>.jpg`. The viewer and `load_dataset` read only `data/`, so they are unchanged. |
| |
| ## Citation |
| |
| ```bibtex |
| @misc{qrdn1_2021, |
| title = {QR-DN1.0: A new Distorted and Noisy QRs dataset}, |
| author = {Monfared, Milad and Koochari, Abbas and Monshinmotlagh, Radin}, |
| year = {2021}, |
| publisher = {Mendeley Data}, |
| version = {V2}, |
| doi = {10.17632/t2bdr663ms.2} |
| } |
| ``` |
| |
| Licence: CC BY 4.0 — <https://creativecommons.org/licenses/by/4.0/> |
| Please cite the authors above, not this mirror, when using the data. |
| |
