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ICC 2017 Washington D.C, USA July 02-07, 2017 Implementing the Concept of Geographic Context for Efficient Recognition from Large-Scale Topographic Map Series Johannes H. Uhl 1 Research Team: Stefan Leyk 1 , Yao-Yi Chiang 2 , Weiwei Duan 3 ,


  1. ICC 2017 Washington D.C, USA July 02-07, 2017 Implementing the Concept of Geographic Context for Efficient Recognition from Large-Scale Topographic Map Series Johannes H. Uhl 1 Research Team: Stefan Leyk 1 , Yao-Yi Chiang 2 , Weiwei Duan 3 , Vinil Jain 2 , Dan Feldman 2 , Craig Knoblock 3 1 Department of Geography 2 Spatial Sciences Institute 3 Computer Science Department University of Colorado Boulder University of Southern California University of Southern California

  2. Outline Map Processing: Impact & Challenges Geographic Context & Map Processing A Case Study and Outlook

  3. Outline I M AP P ROCESSING : I MPACT & C HALLENGES II T HE P RINCIPLE OF G EOGRAPHIC C ONTEXT III C ASE S TUDY : Recognition of Buildings and Urban Areas in Historical Topographic Maps Map Processing: Impact & Challenges Geographic Context & Map Processing A Case Study and Outlook

  4. I Map Processing: Impact & Challenges Map Processing: Impact & Challenges

  5. The Impact of Map Processing (a) Military Geographical Institute, Poland 1930, 1:25K (b) Royal Prussian Surveying Unit, Map of Western Russia, 1915, 1:100K (c) Imperial and Royal Military Geographical Institute, Austria, Map of the Austrian-Hungarian Monarchy and foreign map pages, Russia, 1878, 1:75K (d) Swiss Federal Topographic Bureau, Swiss Topographic Map (Siegfried Map), 1912, 1:25K  Preserving unique witnesses of the past  unlocking geographic information Map Processing: Impact & Challenges

  6. The Impact of Map Processing Map Processing: Impact & Challenges

  7. The Impact of Map Processing - Map processing = Recognition + Extraction - Pattern recognition, computer vision, machine learning... - Creating GIS-readable data from scanned map archives - Retrospective Landscape Analysis - Historians, Geographers, Demographers, Landscape Ecologists, etc… Map Processing: Impact & Challenges

  8. The Impact of Map Processing - Map processing = Recognition + Extraction - Pattern recognition, computer vision, machine learning... - Creating GIS-readable data from scanned map archives - Retrospective Landscape Analysis - Historians, Geographers, Demographers, Landscape Ecologists, etc… Map Processing: Impact & Challenges

  9. Current Challenges in Map Processing Map Processing: Impact & Challenges

  10. Current Challenges in Map Processing Map Processing: Impact & Challenges

  11. Current Challenges in Map Processing • Complexity, graphical quality, data volume • User interaction  Low levels of automation in information extraction Map Processing: Impact & Challenges

  12. Current Challenges in Map Processing • Complexity, graphical quality, data volume • User interaction  Low levels of automation in information extraction Map Processing: Impact & Challenges

  13. Current Challenges in Map Processing • Complexity, graphical quality, data volume • User interaction  Low levels of automation in information extraction Map Processing: Impact & Challenges

  14. Current Challenges in Map Processing Map recognition involving user interaction: Map Processing: Impact & Challenges

  15. Current Challenges in Map Processing Map recognition involving user interaction: Label Learn Extract Map Processing: Impact & Challenges

  16. Current Challenges in Map Processing Map recognition involving user interaction: Label Learn Extract Map Processing: Impact & Challenges

  17. Current Challenges in Map Processing Map recognition involving user interaction: Label Learn Extract shape, color & gradient descriptors Map Processing: Impact & Challenges

  18. Current Challenges in Map Processing Map recognition involving user interaction: Label Learn Extract shape, color & gradient descriptors Map Processing: Impact & Challenges

  19. Current Challenges in Map Processing Map recognition involving user interaction: Label Learn Extract shape, color & gradient descriptors How to overcome user labeling to achieve higher levels of automation? Map Processing: Impact & Challenges

  20. II The Principle of Geographic Context Effective use of external (geographic) data for improved information extraction from maps Geographic Context & Map Processing

  21. Geographic Context?  Map series in digital archives  Large data volume  Dependent editions with incremental change (updates)  Overlap in content to guide learning? 1950 Geographic Context & Map Processing

  22. Geographic Context?  Map series in digital archives  Large data volume 1964  Dependent editions with incremental change (updates)  Overlap in content to guide learning? 1950 Geographic Context & Map Processing

  23. Geographic Context?  Map series in digital archives  Large data volume 1964  Dependent editions with incremental change (updates)  Overlap in content to guide learning? 1950 Geographic Context & Map Processing

  24. 2012 Geographic Context?  Map series in digital archives  Large data volume 1964  Dependent editions with incremental change (updates)  Overlap in content to guide learning? 1950 Geographic Context & Map Processing

  25. 2012 Geographic Context?  Map series in digital archives  Large data volume 1964  Dependent editions with incremental change (updates)  Overlap in content to guide learning? 1950 Geographic Context & Map Processing

  26. 2012 Geographic Context?  Map series in digital archives  Large data volume 1964  Dependent editions with incremental change (updates)  Overlap in content to guide learning? 1950 Geographic Context & Map Processing

  27. 2012 Geographic Context?  Map series in digital archives  Large data volume 1964  Dependent editions with incremental change (updates)  Overlap in content to guide learning?  Generic (not independent) 1950 ancillary data representing feature of interest  Know “where to expect” the feature of interest Geographic Context & Map Processing

  28. Information Extraction & Geographic Context (1) Creating contextual information  Geometry  Attributes Geographic Context & Map Processing

  29. Information Extraction & Geographic Context Vector data (VGI…) Admin (1) Creating contextual information Records (x,y)  Geometry Gazetteer  Attributes Geographic Context & Map Processing

  30. Information Extraction & Geographic Context Vector data (VGI…) Admin (1) Creating contextual information Records (x,y)  Geometry Gazetteer  Attributes Geographic Context & Map Processing

  31. Information Extraction & Geographic Context Vector data (VGI…) Admin (1) Creating contextual information Records (x,y)  Geometry Gazetteer  Attributes (2) Adaptive graphics sampling  Collect spatially constrained graphics examples  Assume overlap: map & context Geographic Context & Map Processing

  32. Information Extraction & Geographic Context Vector data (VGI…) Admin (1) Creating contextual information Records (x,y)  Geometry Gazetteer  Attributes (2) Adaptive graphics sampling  Collect spatially constrained graphics examples  Assume overlap: map & context Geographic Context & Map Processing

  33. Information Extraction & Geographic Context Vector data (VGI…) Admin (1) Creating contextual information Records (x,y)  Geometry Gazetteer  Attributes (2) Adaptive graphics sampling  Collect spatially constrained graphics examples  Assume overlap: map & context Geographic Context & Map Processing

  34. Information Extraction & Geographic Context Vector data (VGI…) Admin (1) Creating contextual information Records (x,y)  Geometry Gazetteer  Attributes (2) Adaptive graphics sampling  Collect spatially constrained graphics examples  Assume overlap: map & context (3) Compute feature descriptors: Create knowledge base  Shape, color, texture descriptors  To be used in learning and extraction Geographic Context & Map Processing

  35. Information Extraction & Geographic Context Vector data (VGI…) Admin (1) Creating contextual information Records (x,y)  Geometry Gazetteer  Attributes (2) Adaptive graphics sampling  Collect spatially constrained graphics examples  Assume overlap: map & context (3) Compute feature descriptors: Create knowledge base  Shape, color, texture descriptors  To be used in learning and extraction Step (1) and (2): Eliminate user interaction Geographic Context & Map Processing

  36. III Case Study Geographic context for automated map symbol recognition: Buildings and Urban Areas Case Study: Building and Urban Area Extraction

  37. The Experiment Case Study: Building and Urban Area Extraction

  38. The Experiment Case Study: Building and Urban Area Extraction

  39. The Experiment Case Study: Building and Urban Area Extraction

  40. The Experiment Case Study: Building and Urban Area Extraction

  41. The Experiment Geographic Context Buildings Case Study: Building and Urban Area Extraction

  42. The Experiment Geographic Context Buildings Case Study: Building and Urban Area Extraction

  43. The Experiment Geographic Context Buildings Case Study: Building and Urban Area Extraction

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