John Mc Kerrell: OpenStreetView


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John Mc Kerrell: OpenStreetView

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