MAPLES-DR: Montreal Annotation Project for DR

198 fundus images (from MESSIDOR) with pixel-wise segmentation for 10 biomarkers (lesions + structures) + DR and ME severity grades.

At a glance

Field	Value
Short name	maples_dr
Full name	MAPLES-DR: Montreal Annotation Project for DR
Primary category	fundus
Contained modalities	fundus
Tasks	segmentation, grading, classification
Samples	198
Classes	5 (No DR, Mild DR, Moderate DR, Severe DR, PDR)
Splits	train, test
Size	0.5 GB
Source-stated terms	CC BY 4.0
Normalized terms	cc-by
Descriptive screening label	Standard label without an explicit NC clause; not a permission finding
Terms scope	dataset_files
Access friction	anonymous_direct
Route backend	Figshare
Availability	available (checked 2026-07-21)
Acquisition support	standard_platform_supported
Legacy sample-loader status	Standard loader included

Notes

Segmentation maps for 10 retinal biomarkers.

Access preflight and acquisition

CLI

# Read-only preflight
eyehub download maples_dr --data-dir ./data --dry-run --json

# Explicit transfer, only when preflight reports supported behavior
eyehub download maples_dr --data-dir ./data

Python

from eyedatahub.acquisition import preflight_dataset
from eyedatahub.datasets.registry import REGISTRY

ds = REGISTRY.get_dataset('maples_dr')
print(preflight_dataset(ds, './data'))  # no transfer

Upstream page: https://doi.org/10.6084/m9.figshare.24328660

Source-term evidence: https://doi.org/10.6084/m9.figshare.24328660

Loader example

This entry includes a standard DatasetSample loader.

from pathlib import Path
from eyedatahub.datasets.registry import REGISTRY

data_dir = Path('~/.eyedatahub/data').expanduser()
ds = REGISTRY.get_dataset('maples_dr')
samples = ds.load(data_dir, split='test')
for s in samples[:5]:
    print(s.sample_id, s.label, s.image_path)

Citation

BibTeX

@misc{maples_dr,
  title  = { MAPLES-DR: Montreal Annotation Project for DR },
  note   = { Morin et al., 'MAPLES-DR: MESSIDOR Annotation Project for Lesion and Structures Evaluation in Diabetic Retinopathy', Scientific Data 2024 },
  year   = { 2024 },
  url    = { https://doi.org/10.6084/m9.figshare.24328660 },
}

Plain text

Morin et al., 'MAPLES-DR: MESSIDOR Annotation Project for Lesion and Structures Evaluation in Diabetic Retinopathy', Scientific Data 2024.

Source-stated terms

• Raw source string: CC BY 4.0
• Normalized category: cc-by
• Apparent scope: dataset_files
• Descriptive screening label: Standard label without an explicit NC clause; not a permission finding

⚠️ Source-stated terms, scope, and normalized labels are curation metadata, not legal advice or a permission finding. Review the current official source before transfer or reuse.

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