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
Publication date	2023-12-15
Date basis	Initial dataset release
Publication date precision	day
Publication date evidence	api.figshare.com/v2
Publication date source field	published_date (Figshare version 1)
Publication date reviewed	2026-09-11
Date notes	Version 1 is earliest; current record is version 3.
Primary category	fundus
Resource role	current_dataset
Dataset family	maples_dr
Contained modalities	fundus
Tasks	segmentation, grading, classification
Primary reported quantity	198 images
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	self_service_authenticated
Route backend	Figshare
Availability	available (checked 2026-07-21)
Acquisition support	standard_platform_supported
Legacy sample-loader status	Standard loader included

Reported quantities

Role	Count	Unit	Scope	Basis	Evidence
Primary	198	images	Primary quantity reported in the reviewed catalog source	legacy_catalog_field	https://doi.org/10.6084/m9.figshare.24328660

Counts retain their source-reported units. Additional rows can describe components, paired items, or derivative copies and are not automatically added to the primary quantity.

Notes

Segmentation maps for 10 retinal biomarkers.

Access information and download

CLI

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

# Download, 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 download

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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