---
dataset_info:
  features:
  - name: name
    dtype: string
  - name: uuid
    dtype: string
  - name: pixel_values
    dtype: image
  - name: labels
    dtype: image
  - name: label_status
    dtype: string
  - name: segments_metadata
    dtype: string
  - name: segments_annotations
    dtype: string
  - name: source_image_credit
    dtype: string
  splits:
  - name: train
    num_bytes: 531683990
    num_examples: 148
  - name: test
    num_bytes: 28114367
    num_examples: 21
  download_size: 553445960
  dataset_size: 559798357
configs:
- config_name: default
  data_files:
  - split: train
    path: data/train-*
  - split: test
    path: data/test-*
task_categories:
- image-segmentation
pretty_name: Randall Open Manuscript Segmentations
license: other
tags:
- image
- medieval-manuscripts
- semantic-segmentation
license_name: mixed-cc0-1.0-and-public-domain-mark-1.0
---
# Randall Open Manuscript Segmentations

This is a dataset of hand-annotated segmentation maps for medieval manuscripts indexed in Lilian Randall's 
Images in the Margins of Gothic Manuscripts (1966). It contains 148 training pages and 
21 test pages with semantic segmentation masks that distinguish 7 classes of decorative elements. 
Text, blank page, and other non-decorative regions pixels are grouped together into the background class.

## Fields

- `name`, `uuid`, `pixel_values`, `labels`, `label_status`,
  `segments_metadata`, and `segments_annotations`.
- `source_image_credit` gives a page-specific source credit containing the
  holding institution, manuscript shelfmark/accession, and folio/page when one
  is available.

| Label | Category |
|---|---|
|"0"|"background"|
|"1"|"line filler"|
|"2"|"marginal images"|
|"3"|"painted initials"|
|"4"|"miniatures"|
|"5"|"borders"|
|"6"|"pen flourishing"|
|"7"|"pen flourished texts"|

## Included sources and image rights

This is a mixed-rights dataset. The `license: other` metadata deliberately does
not claim one blanket license for every component.

| Source | Rows | Image status | Evidence |
|---|---:|---|---|
| Walters Art Museum, MSS W.37, W.39, W.45, W.82, W.85, W.87, W.90, W.102, W.110 | 143 | CC0 1.0 | [Walters rights and reproductions policy](https://thewalters.org/about/policies/rights-reproductions/) |
| J. Paul Getty Museum, *Ruskin Hours*, 83.ML.99 | 4 | CC0 1.0 | [Getty IIIF manifest](https://media.getty.edu/iiif/manifest/6da8e9b7-7b47-4126-9936-2857d04c9b35) |
| J. Paul Getty Museum, *Breviary*, 83.ML.98 | 5 | CC0 1.0 | [Getty IIIF manifest](https://media.getty.edu/iiif/manifest/f4458457-1063-4a44-8957-fe977f3c82a2) |
| Universitätsbibliothek Heidelberg, Cod. Sal. IX,51 | 12 | Public Domain Mark 1.0 | [Heidelberg object record](https://digi.ub.uni-heidelberg.de/diglit/salIX51) |
| Bayerische Staatsbibliothek, Cod.gall. 16 (`bsb00056556`) | 5 | Public Domain Mark 1.0 | [BSB IIIF manifest](https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb00056556/manifest) |

Getty credits include the institution's suggested Open Content wording.
Walters CC0 does not require attribution, but credits are supplied for scholarly
traceability. Heidelberg and BSB source references are also retained in the
credit field.

## Selection policy and limitations

Only source manuscripts with an explicit CC0 1.0 dedication or Public Domain Mark
1.0 were included. The rights statements concern the source manuscript images. Users should still
review the source records and determine whether their intended use complies
with applicable law.