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Mobile collection of location-based multimedia

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Title: Mobile collection of location-based multimedia


1
Mobile collection of location-based multimedia
Research presentation 27.5.2010
Prof. Pasi Fränti
  • School of Computing
  • University of Eastern Finland

2
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.

3
MOPSI data collection and service
Data collection by multimedia phone
Data sharing via www/wap
4
Data collection in MOPSI system
www
Other users
Data collector
GPS
5
Motives for sharing data
  • Pragmatic
  • Need for information
  • Share information to help others
  • Social
  • Publish creative results
  • Getting feedback
  • Social interaction

6
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
7
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
8
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
9
Four aspects of relevance
  1. Content
  2. Time
  3. Location
  4. Network

Relevance of data is defined by social or other
network
User Pasi
10
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
11
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

12
Access to photo collectionMap view
13
Access to photo collectionTimeline view
14
Mobile interface of MOPSI service
1. Location
  • Exact coordinate
  • Nearest address
  • GPS status

2. Search
  • Query word
  • Suggested keywords from previous searches

15
MOPSI search directory
Database results
Routing to the target
Search engineresults
16
Photos by categories in MOPSI
17
Content description
Singapore flier
(Going to) sauna
(no words needed)
(no words needed)
18
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.

19
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.

20
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)

21
Comparison with Picasa and Flickr
22
Photo distribution in MOPSI
23
Technical problems
Asynchronous problem (1)
Asynchronous problem (2)
Interrupted transmission
Low illumination
24
Thank you
Time for questions!
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