| --- |
| license: other |
| license_name: nasa-public-use |
| license_link: https://ntrs.nasa.gov/citations/19830005543 |
| language: |
| - en |
| task_categories: |
| - image-to-text |
| tags: |
| - ocr |
| - document-images |
| - example |
| configs: |
| - config_name: default |
| data_files: |
| - split: train |
| path: pages/** |
| --- |
| |
| # OCR demo: Food for Space Flight |
|
|
| Seven scanned pages from NASA's *Food for Space Flight* booklet, with headings, |
| columns, photographs, food lists and tables. This small dataset is an input for |
| trying OCR recipes and inspecting their results. |
|
|
| The images are PDF pages **3-9** (printed pages **2-8**) of the original booklet. |
| The selection omits the reproduction disclaimer and dark cover. The complete |
| original PDF and a matching seven-page extract are in the |
| [OCR demo Bucket](https://huggingface.co/buckets/uv-scripts/ocr-demo). |
|
|
| ## Use as a dataset |
|
|
| ```python |
| from datasets import load_dataset |
| |
| pages = load_dataset("uv-scripts/ocr-demo", split="train") |
| ``` |
|
|
| There are seven rows in the `train` split: |
|
|
| | Column | Meaning | |
| |---|---| |
| | `image` | Page image, rendered at 300 DPI and saved as JPEG at quality 85. | |
| | `page_id` | Stable ID containing the original PDF page number. | |
| | `source_page` | One-based page number in the original PDF. | |
| | `printed_page` | Page number printed on the scanned page. | |
| | `source` | NASA's source-record URL. | |
|
|
| The images use the [ImageFolder format](https://huggingface.co/docs/datasets/en/image_dataset). |
| `pages/metadata.jsonl` associates each image with its source-page information. |
| There is no verified ground-truth transcription in this dataset. |
|
|
| ## PDF and file inputs |
|
|
| The [OCR demo Bucket](https://huggingface.co/buckets/uv-scripts/ocr-demo) contains: |
|
|
| - `original/food-for-space-flight.pdf`: the unmodified nine-page NASA PDF. |
| - `demo/food-for-space-flight.pdf`: a seven-page extract matching the dataset rows. |
| - `pages/`: the same seven page images and metadata. |
|
|
| Use one prefix, such as `hf://buckets/uv-scripts/ocr-demo/demo`, as your input to |
| avoid processing both a PDF and its page images. |
|
|
| ## Source and licence |
|
|
| - [NASA record: NASA Facts: Food for Space Flight](https://ntrs.nasa.gov/citations/19830005543) |
| - [Original PDF](https://ntrs.nasa.gov/api/citations/19830005543/downloads/19830005543.pdf) |
| - [Document metadata](https://ntrs.nasa.gov/api/citations/19830005543) |
|
|
| NASA's document record states **Work of the US Gov. Public Use Permitted**. |
| The source pages retain that status; the repository's code license does not |
| relicense the NASA document. See [NASA's usage guidance](https://www.nasa.gov/nasa-brand-center/images-and-media/). |
| Attribute these source pages to NASA and identify any generated transcription as |
| model output. NASA does not endorse this demo or verify its OCR results. |
|
|
| The archival scan has damaged lettering and an imperfect existing OCR layer. |
| Inspect generated text against the page images, especially tables and captions. |
|
|
| ## Preparation |
|
|
| Pages 3-9 were rendered from the original PDF with Poppler's `pdftoppm` at |
| 300 DPI and saved as JPEG at quality 85. No OCR model was run during preparation. |
| The Bucket's `manifest.json` records source URLs, file checksums and rendering settings. |
|
|
