Table 1.

List of user roles and their associated permissions

Permissions	Guest	Registered User	Curator
Browse collections and images	√	√	√
View collections and its metadata	√	√	√
View images and its metadata	√	√	√
View high resolution original images	Χ	√	√
Create image collections	Χ	√	√
Upload images to the collection	Χ	√	√
Bulk upload images to the collection	Χ	Χ	√
Upload metadata to the collection	Χ	√	√
Comment on collections and images	Χ	√	√
Maintain a marked list of images	Χ	√	√
Download images and its metadata from the marked list	Χ	√	√
Image upload quota	0 KB	1 GB	20 GB
Add processed images and results	Χ	√	√