1. Crossing Boundaries
Our Inadvertent Recreation
Tyler Bell of Real-World Geometry
22 September 2009
bell@yahoo-inc.com

2. Crossing Boundaries
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3. OpenStreetMap
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4. OSM Users August 2009
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5. Changing Business Landscape
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6. Traffic!
“Results suggest that a 2-3% penetration of cell phones in the driver
population is enough to provide accurate measurements of the velocity of
the traffic flow."
Evaluation of Traffic Data Obtained via GPS-enabled Mobile Phones: the Mobile Century field experiment,
UC Berkeley's Institute for Transportation Studies
Tyler Bell -6-

7. Reconstructing Geometry
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8. Please Turn Off All Devices
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9. The World’s Attention is On…
David Crandall et al., Cornell University

10. David Crandall et al., Cornell University

11. The World’s Attention is On…
David Crandall et al., Cornell University

12. The World’s Attention is On…
David Crandall et al., Cornell University

13. The World’s Attention is On…
David Crandall et al., Cornell University

14. The World’s Attention is On…
David Crandall et al., Cornell University

15. Rome: Trevi Fountain
Flickr user atila_y
Community Photo Collections Project, U. Washington GRAIL Lab
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16. Rome: St Peter’s Dome
Flickr user valerio.l
Community Photo Collections Project, U. Washington GRAIL Lab
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17. Rome: Flavian Ampitheatre
Flickr user David Paul Ohmer
Community Photo Collections Project, U. Washington GRAIL Lab
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18. The Humble Tag
Flickr user Sarah Parrott

19. Yahoo! TagMaps Prototype
Night
Day
http://tagmaps.research.yahoo.com - 19 -

20. Tag Reinforcement
TAKE A PHOTO WITH DESCRIBE THE PHOTO SEE TAGS THAT WILL BE
AUTOMATIC GEOCODING USING SUGGESTED ADDED TO THE PHOTO
AND UPLOAD IT TAGS AND USER ADDED
TAGS
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21. Most Popular Places
David Crandall et al., Cornell University - 21 -

22. Flickr user loungelistener
Flickr user light collector

23. Think Place, Not Space
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24. Semantics Required
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25. Colloquial Names: Personal, Local
George C Payne Elementary School >> Payne Elementary
James Woods Regional High School >> James Woods High
University of Southern California >> USC
University of South Carolina >> USC
San Francisco Museum of Modern Art >> SFMOMA
Yerba Buena Center For The Arts >> Yerba Buena Center
San Jose Diridon Caltrain Station >> San Jose Caltrain
>> Diridon Caltrain
Norman Y. Mineta San Jose
International Airport >> SJC
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26. Who Really Uses Official Names?
Tyler Bell - 26 -