README.md

metadata

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
J. Paul Getty Museum, Ruskin Hours, 83.ML.99	4	CC0 1.0	Getty IIIF manifest
J. Paul Getty Museum, Breviary, 83.ML.98	5	CC0 1.0	Getty IIIF manifest
Universitätsbibliothek Heidelberg, Cod. Sal. IX,51	12	Public Domain Mark 1.0	Heidelberg object record
Bayerische Staatsbibliothek, Cod.gall. 16 (bsb00056556)	5	Public Domain Mark 1.0	BSB IIIF 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.