John Mc Kerrell: OpenStreetView

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Transcript

  • 1. OpenStreetView
    • John McKerrell
  • 2. OpenStreetView
    • John McKerrell
  • 3. OpenStreetView
    • John McKerrell
  • 4.  
  • 5. OpenStreetView?
    • Photos on a map
    • Register your twitter account
    • No photos in an area? Request some
    • Twitter message sent to nearest person to collect photos
  • 6.  
  • 7. while I was sleeping...
  • 8.  
  • 9.  
  • 10.  
  • 11.  
  • 12.  
  • 13.  
  • 14. What is (Open) Street View?
  • 15. What is (Open) Street View?
    • Capturing photos
    • Storing and maintaining database
    • Extracting data and metadata
    • Presenting imagery to users
  • 16. What is (Open) Street View?
    • Capturing photos
    • Storing and maintaining database
    • Extracting data
    • Presenting imagery to users
  • 17. Capturing Photos
    • Normal Camera + Separate GPS
    • Mobile device with combined GPS + Camera, and bespoke software
    • Higher-grade cameras and other equipment
  • 18. Upload
    • Web upload, multiple files via flash
    • FTP - username/password given from the site
    • Flickr/Panoramio import
    • API, native clients
  • 19. Import
    • EXIF tags are parsed for location, direction and tilt information
    • Entry is created in OSV database
    • Multiple sizes are created
  • 20. Moderation
    • Photo cannot be viewed until it has been moderated by N people
    • Moderators chosen by the system, can’t ask your friends
    • Moderators verify that image is valid and blur out sensitive parts
  • 21.  
  • 22.  
  • 23. After Moderation
    • Photo becomes part of the main database
    • Anyone can view it whether a member of OpenStreetView or not
  • 24. Extracting Data
    • Images can be tagged with key=value pairs
    • Tags can apply to an area of the image or the whole image
    • Can also mark an image as “unsafe” to be moderated again
  • 25.  
  • 26. Extracting Data
    • Moderated images would be available for people to download
    • Teams working on computer vision projects could use OpenStreetView as a source dataset
  • 27. API
    • Upload images for processing
    • Tagging images that have been moderated
    • Marking images as unsafe
    • Cannot moderate images through third party sites
  • 28. API
    • Search for images by bounding box and tags
    • Download information and metadata for images
    • Download resized and original sized images
  • 29. License
    • User can specify license that covers individual images
    • Users of the images can choose to only retrieve images covered by an acceptable license
    • Could also opt for “OpenStreetView Choice” License
  • 30. License
    • Metadata for an image covered by same license as image itself?
    • Images may be removed from the database, have to have provision for users of the images to be told and remove their copies
  • 31. Presenting Imagery
    • Start with markers on a map
  • 32. Presenting Imagery
    • Go on to highlighting roads with coverage, ability to navigate between photos
  • 33. Presenting Imagery
    • Microsoft Photosynth
    http://photosynth.net/view.aspx?cid=9686ec98-2c88-4b31-81fb-f29f5ebbab9c
  • 34. Presenting Imagery
    • In the future, who knows?
    http://maps.google.co.uk/maps?f=q&source=s_q&hl=en&geocode=&q=ccc&sll=52.357702,4.910588&sspn=0.011192,0.033002&ie=UTF8&ll=52.362544,4.907101&spn=0,359.983499&z=17&layer=c&cbll=52.362449,4.907158&panoid=tboWgnlQU0utvg60YAMUTA&cbp=12,24.65,,0,-17.76 + OSM map
  • 35. Getting Involved?
    • www.openstreetview.org
    • [email_address] map .org