Usage Model

• Log in
• Log out

• add a photo
• view a photo
• tag a photo
• caption a photo
• remove a photo
• share a photo

• create an album
• name an album
• view photos in an album
• add photo to an album
• remove photo from an album
• share an album

• subscribe to a photo feed
• view a photo feed
• view an aggregation of photo feeds
• unsubscribe from a photo feeds

• comment on a photo
• view a comment
• remove a comment

• browse photos
  • by album
  • by photo feed
  • by tag
  • by location
  • by date taken

• search for a photo
  • by caption
  • by tag
  • by date taken
  • by location
  • by comments
• search for an album
  • by name

Domain Model

User Interface Model

Task Hierarchy

Task hierarchy of existing photo sharing systems from a previous study into existing photo sharing systems:

.

References

See PhotoSharingResearch for a user-centered study into photo sharing.

• ​Initial requirements modeling
  • ​Essential use cases / ​User stories
  • ​Initial domain model
  • ​Essential UI prototypes / ​Abstract prototypes
  • ​UI flow diagrams
  • ​UI prototypes