Mobile collection of location-based multimedia

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Mobile collection of location-based multimedia
Research presentation 27.5.2010
Prof. Pasi Fränti

• School of Computing
• University of Eastern Finland

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Mobile trends internet location

• Nokia 50 of its multimedia phones will have
  GPS by 2010-12.
• Gartner 75 has GPS by the end of 2011.

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MOPSI data collection and service
Data collection by multimedia phone
Data sharing via www/wap
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Data collection in MOPSI system
www
Other users
Data collector
GPS
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Motives for sharing data

• Pragmatic
• Need for information
• Share information to help others
• Social
• Publish creative results
• Getting feedback
• Social interaction

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Four aspects of relevance
User Pasi

1. Content
2. Time
3. Location
4. Network

skis
Content of picture
snow
Last skiing of winter Date 4.4.2010Location N
62.63 E 29.86Arppentie 5, Joensuu
Keywords or informal description
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Four aspects of relevance
User Pasi

1. Content
2. Time
3. Location
4. Network

Not expected in July
Last skiing of winter Date 4.4.2010Location N
62.63 E 29.86Arppentie 5, Joensuu
Date
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Four aspects of relevance
User Pasi

1. Content
2. Time
3. Location
4. Network

Exact coordinates
Last skiing of winter Date 4.4.2010Location N
62.63 E 29.86Arppentie 5, Joensuu
Address for usability
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Four aspects of relevance

1. Content
2. Time
3. Location
4. Network

Relevance of data is defined by social or other
network
User Pasi
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Four aspects of relevance
1. Content
4. Social network

• Keywords skis, forest, snow
• Informal description

• Relevance defined by the network of the user

User Pasi
2. Time

• Date and time (not expected in July)

3. Location

• Exact coordinates
• Address for usability

Last skiing of winter Date 4.4.2010Location N
62.63 E 29.86Arppentie 5, Joensuu
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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

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Access to photo collectionMap view
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Access to photo collectionTimeline view
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Mobile interface of MOPSI service
1. Location

• Exact coordinate
• Nearest address
• GPS status

2. Search

• Query word
• Suggested keywords from previous searches

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MOPSI search directory
Database results
Routing to the target
Search engineresults
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Photos by categories in MOPSI
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Content description
Singapore flier
(Going to) sauna
(no words needed)
(no words needed)
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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.

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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.

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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)

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Comparison with Picasa and Flickr
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Photo distribution in MOPSI
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Technical problems
Asynchronous problem (1)
Asynchronous problem (2)
Interrupted transmission
Low illumination
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Thank you
Time for questions!