Mobile collection of location-based multimedia School of Computing University of Eastern Finland Prof. Pasi Fränti Research presentation

Mobile trends: internet & location  Nokia: 50% of its multimedia phones will have GPS by  Gartner: 75% has GPS by the end of 2011.

MOPSI data collection and service Data collection by multimedia phone Data sharing via www/wap

wwwwww Data collection in MOPSI system GPS Data collector: Other users: MOPSI webpage Service directory N E User collection Last skiing of winter User: Pasi

Motives for sharing data  Pragmatic: -Need for information -Share information to help others  Social: -Publish creative results -Getting feedback -Social interaction

1. Content Time Location Network Four aspects of relevance Last skiing of winter Date: Location: N E Arppentie 5, Joensuu Content of picture Keywords or informal description snow skis User: Pasi

1. Content 2. Time 3. Location 4. Network Four aspects of relevance Last skiing of winter Date: Location: N E Arppentie 5, Joensuu Date Not expected in July User: Pasi

1. Content 2. Time 3. Location 4. Network Four aspects of relevance Last skiing of winter Date: Location: N E Arppentie 5, Joensuu Exact coordinates Address for usability User: Pasi

1. Content 2. Time 3. Location Network Four aspects of relevance User: Pasi Relevance of data is defined by social or other network

Four aspects of relevance Last skiing of winter Date: Location: N E Arppentie 5, Joensuu User: Pasi   Keywords: skis, forest, snow   Informal description   Relevance defined by the network of the user   Date and time (not expected in July) 1. Content 2. Time 3. Location 4. Social network   Exact coordinates   Address for usability

Using location in MOPSI  Browse data collection on a map  Show location of other users  Track the movements of the user  Filter results from the service directory

Access to photo collection Map view

Access to photo collection Timeline view

Mobile interface of MOPSI service   Exact coordinate   Nearest address   GPS status   Query word   Suggested keywords from previous searches 1. Location 2. Search

MOPSI search directory Database results Search engine results Routing to the target

Photos by categories in MOPSI

Content description Singapore flier (Going to) sauna (no words needed)

Description of pictures of people   People by their name or role: - -Runner - -Floorball player   Related to place: - -Untung / STMIK - -Young Andrei - -My son Amir   Among the pictures of people, 31% (21/68) has some kind of identity.

Description of events   Content or location not enough.   Description adds to the relevance.   Examples: - -Work: ecse, abi, mopsi meeting, ubiikki - -Running competition: Åland half marathon - -Actions attached with feelings: quality time in skiing elevator.

Location of travel photos   Not easily recognized from content.   Can be concluded from GPS data.   Descriptions are used anyway: - -Locations as such: Clarke Quay, Geger beach, Suceva, Tahkovuori and Aholansaari (location - -With additional details: Petronas Towers, Heureka, Singapore flier, Olavin linna. - -With additional feelings: Musta Pekka mutkan takana (Black Pete behind the curve)

Comparison with Picasa and Flickr

Photo distribution in MOPSI

Technical problems Asynchronous problem (1) Asynchronous problem (2) Low illumination Interrupted transmission

Thank you Time for questions!