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User Account
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Action                 Visitor User     Administrator
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View public image      ✓       ✓        ✓            
View private image     ❌      ✓        ✓           
Add new image          ❌      ❌       ✓            
Add new classification ❌      ❌       ✓            
Add new segmentation   ❌      ❌       ✓            
Create new user        ✓       ❌       ✓            
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