HRF-Seg+: A Multi-Structure Annotated Fundus Image Dataset with Optic Disc, Cup, Vessels, Alpha and Beta Zones

HRF-Seg+ is an extended version of the public HRF (High-Resolution Fundus) dataset that includes pixel-wise annotated segmentation masks for five key retinal structures: 
- Optic Disc (purple)
- Optic Cup (brown)
- Retinal Vessels (orange)
- Peripapillary Alpha Zone (blue-green)
- Peripapillary Beta Zone (green)

The dataset includes:

- Folder 1: Segmented Optic Disc masks
- Folder 2: Segmented Optic Cup masks
- Folder 3: Segmented Retinal Vessel masks
- Folder 4: Segmented Alpha and Beta Zones
- Folder 5: Merged Ground Truth masks (all structures in one image)
- Folder 6: Original HRF images (from: https://www5.cs.fau.de/research/data/fundus-images/)
- CSV file: Color legend for all masks

This dataset is intended to support research in ophthalmology, glaucoma detection, and deep learning-based segmentation. All annotations were performed manually and reviewed by experts. 

Original data is sourced from the HRF dataset [Budai et al., 2013]. Segmentation annotations were added by the authors of this dataset.