---
pretty_name: SafeOCR-LabGold
license: apache-2.0
language:
- en
size_categories:
- n<1K
tags:
- clinical-ocr
- healthcare
- synthetic
- verification
- fhir
- benchmark
configs:
- config_name: default
  default: true
  data_files:
  - split: calibration
    path: "viewer/calibration.parquet"
  - split: evaluation
    path: "viewer/evaluation.parquet"
---

# SafeOCR-LabGold

**SafeOCR-LabGold** is the synthetic laboratory-report benchmark used to develop and evaluate the frozen SafeOCR v0.1 verification policy.

## Dataset summary

The complete frozen split contains:

| Split | Synthetic records | Rendered documents | Critical fields |
|---|---:|---:|---:|
| Calibration | 12 | 24 | 144 |
| Final evaluation | 24 | 48 | 288 |
| Total | 36 | 72 | 432 |

Each synthetic record is rendered as a clean document and a deterministic corrupted counterpart. Three controlled templates are used: `classic`, `compact`, and `grid`. Every document contains six laboratory fields.

The paper reports the **48-document / 288-critical-field final evaluation split**.

## Intended use

Use SafeOCR-LabGold for:

- deterministic clinical-OCR verification research;
- regression tests for evidence binding and selective-decision policies;
- reproducible demonstrations of review/abstention behavior;
- studying automation-versus-review trade-offs under the frozen v0.1 benchmark.

Do **not** use this dataset as evidence of real-world clinical deployment performance. It is synthetic and does not represent the full distribution of real laboratory reports.

## Frozen result boundary

In the final evaluation split, the primary OCR baseline produced 0/288 observed errors. SafeOCR accepted 209/288 fields with 0/209 observed errors and routed 79 correct fields to review. Because the ungated baseline also had zero observed errors, this benchmark does **not** establish a safety benefit from gating.

## Data generation and byte-level reproducibility

The benchmark generator is deterministic for a fixed renderer stack:

```bash
python scripts/prepare_hf_labgold.py --output dist/SafeOCR-LabGold
```

The canonical Hugging Face v0.1 publication package is bound by:

- `manifest_sha256 = 3a3fcdf1e3e045c0b6f8b334457d1e22dbd247a6a556e08235f808143abf5cec`;
- Python 3.12.13;
- Pillow 12.3.0;
- FreeType 2.14.3;
- JPEG feature version 8.0;
- zlib 1.3.1.zlib-ng;
- platform `win32:AMD64`.

SafeOCR's corruption pipeline includes a JPEG round-trip. Pillow can therefore produce different corrupted PNG bytes when its underlying JPEG implementation differs across platforms even when the frozen seeds, case identities, layouts, and policy are unchanged. A package whose manifest hash differs from the canonical value above must not be presented as the byte-identical v0.1 publication artifact. For exact reproduction of the released benchmark, use the published Hugging Face artifacts or a matching renderer stack.

This renderer dependency does not change the frozen evaluation results or claim boundaries; it is a byte-level reproducibility constraint on regenerated corrupted images.

The generator records exact case identity, template, source seed, corruption seed, document hash, page hash, image filename, and truth-region metadata. The canonical root `metadata.jsonl` remains byte-identical to `manifest.jsonl`.

The Hugging Face Dataset Viewer uses a separate derived Parquet layer under `viewer/`. It is generated only after verifying the canonical manifest and every source-image SHA-256. The viewer layer embeds the same image bytes and exposes the frozen metadata as tabular columns, with explicit `calibration` (24 rows) and `evaluation` (48 rows) splits. It is a convenience representation only; `manifest.jsonl` and `images/` remain the audit source of truth.

## Privacy

All records are synthetic. Synthetic patient names and identifiers are generated by SafeOCR; no real patient data are used.

## Repository and demo

- Code and frozen evidence: https://github.com/AbdulazizShehri/SafeOCR
- Interactive verification playground: https://huggingface.co/spaces/MedScaleAI/SafeOCR
- Paper: arXiv identifier will be added at publication

## Dataset contents

The published repository contains:

- `images/*.png`: canonical synthetic laboratory report pages;
- `manifest.jsonl`: canonical audit manifest for the frozen release;
- `metadata.jsonl`: root metadata byte-identical to the canonical manifest;
- `images/metadata.jsonl`: compatibility ImageFolder metadata adapter;
- `viewer/calibration.parquet`: derived 24-row viewer split with embedded canonical images and metadata;
- `viewer/evaluation.parquet`: derived 48-row viewer split with embedded canonical images and metadata;
- `viewer/viewer_info.json`: viewer-layer counts and SHA-256 identities;
- `dataset_info.json`: canonical release counts and SHA-256 identities;
- `README.md`: this dataset card.

External datasets used in the paper are not redistributed here.

## License

The SafeOCR project and generated SafeOCR-LabGold artifacts are released under Apache-2.0 where applicable. Third-party datasets used in the paper retain their own terms and are **not** included in this Hugging Face dataset.