A bit of functional and non-functional requirements for the system:
Users do not need to log in.
Users are able to submit existing photos to a single flickr account acting as a database.
Users are able to take photos instantly and upload onto the flickr account.
Users are able to self define the emotion description on the photo.
The photos uploaded by the users are geotagged by the users themselves.
The system is able to analyse the photos on the flickr database and create a geoaffective map indicating emotions on different locations.