ICC 2013 : Mixing, blending, merging or scrambling topographic maps and orthoimagery in geovisualization ?
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ICC 2013 : Mixing, blending, merging or scrambling topographic maps and orthoimagery in geovisualization ?

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Topographic maps, orthoimagery, vector thematic data convey various views of the real world. Geovisualization tools and geoportals widely provide these heterogeneous data to users. They bring users......

Topographic maps, orthoimagery, vector thematic data convey various views of the real world. Geovisualization tools and geoportals widely provide these heterogeneous data to users. They bring users to co-visualize them in order to make suitable visualizations adapted to a task, a purpose or an application. Nevertheless, existing tools do not help to make satisfactory, elaborated and efficient visualizations. This paper presents a part of a PhD work in progress: conceptual and technical issues about proposing raster and vector co-visualization methods are detailed. The authors aim at proposing tools to explore a continuum of possible visualizations, between the photorealism of an orthoimage and the abstraction of a topographic map. Three methods to reach this objective are presented and discussed: patchwork between a map and an ortho-image, adaptive symbolization when overlaying data and fluid camouflage of a map in an ortho-image.

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  • 1. MIXING, BLENDING, MERGING OR SCRAMBLING TOPOGRAPHIC MAPS AND ORTHOIMAGERY IN GEOVISUALIZATION ? Charlotte Hoarau, Sidonie Christophe, Sébastien Mustière International Cartographic Conference (ICC) - Tuesday, August 27th 2013
  • 2. CONTEXT AND OBJECTIVE OF MY PHD
  • 3. 4Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Aims of my PhD Orthoimagery Topographic map
  • 4. 5Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Aims of my PhD How to combine them to build in-between visualizations ? Orthoimagery Topographic map
  • 5. 6Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Continuum of « In-between » representations build with the French Geoportail
  • 6. 7Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Continuum of « In-between » representations build with the French Geoportail
  • 7. 8Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Continuum of « In-between » representations build with the French Geoportail
  • 8. 9Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Continuum of « In-between » representations build with the French Geoportail
  • 9. 10Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Continuum of « In-between » representations build with the French Geoportail
  • 10. 11Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Continuum of « In-between » representations build with the French Geoportail
  • 11. 12Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Browsing « In-Between »visualizations Orthoimagery Topographic map
  • 12. 13Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013
  • 13. 14Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Browsing « In-between » representation Orthoimagery Topographic Map
  • 14. 15Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Browsing « In-between » representation Orthoimagery Topographic Map
  • 15. 16Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Browsing « In-between » representation Orthoimagery Topographic Map
  • 16. 17Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Browsing « In-between » representation Orthoimagery Topographic Map
  • 17. 18Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Browsing « In-between » representation Orthoimagery Topographic Map
  • 18. 19Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Browsing « In-between » representation Orthoimagery Topographic Map
  • 19. 20Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Browsing « In-between » representation Orthoimagery Topographic Map How to provide the more useful information to the user?
  • 20. PERSISTENT PROBLEMS IN CURRENT VISUALIZATIONS
  • 21. 22Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Layer overlaid Map design issue : Orthoimagery is dark and visually complex Difficulty to symbolize vector layers in consistency with different backgrounds
  • 22. 23Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Side-by-side co-visualizations Swipe Synchronized visualization Magnifier
  • 23. 24Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Layer transparency [Hoarau, AutoCarto 2012] No consensus in designing mixed visualizations by transparency Using transparency leads to data scrambling
  • 24. 25Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Toponym representation © Géoportail, IGN France © Bing maps, Microsoft © Google maps [Hoarau & Escrihuela 2013]
  • 25. DESIGNING IN-BETWEEN REPRESENTATIONS
  • 26. 27Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Map design issues
  • 27. 28Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Map design issues How to portray vector data overlaid to an imagery background ?
  • 28. CAMOUFLAGE METHOD Making maps more realistic
  • 29. 30Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 « Camouflage » method Using landscape colors to make maps more realistic [Christophe, Perret, Hoarau 2013] [Patterson 2010]
  • 30. 31Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 « Camouflage » method Extracting colors from the orthoimagery Re-injecting them in the map specification
  • 31. 32Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 « Camouflage » method
  • 32. 33Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 « Camouflage » method
  • 33. 34Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 « Camouflage » method
  • 34. 35Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 « Camouflage » method
  • 35. PATCHWORK METHOD Keeping the best of each visualization
  • 36. 37Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 « Patchwork » method Keeping the best parts of each initial visualizations Master Student [J. Gautier, 2012]
  • 37. 38Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 « Patchwork » method Keeping the best parts of each initial visualizations Master Student [J. Gautier, 2012]
  • 38. 39Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 « Patchwork » method Keeping the best parts of each initial visualizations Master Student [J. Gautier, 2012]
  • 39. 40Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 « Patchwork » method
  • 40. 41Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Camouflage by swiping
  • 41. ADAPTIVE SYMBOLIZATION Orthoimagery as a specific background layer
  • 42. 43Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Adaptive symbolization Different visual impact of background layers  « Inversion » of conventional colors
  • 43. 44Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Local adaptive symbolization Wide variety of colors in an orthoimagery background  Local adaptation of the color of the roads
  • 44. 45Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Local adaptive symbolization Wide variety of colors in an orthoimagery background  Smart halo around the roads
  • 45. 47Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 In-Between Steps
  • 46. 48Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013 Conclusion & Further Works  Combining topographic maps and orthoimagery  is a great opportunity…  and a big challenge !  And Now ? Combine methods together in an automated geovisualization platform  Usability tests of resulting co-visualizations
  • 47. « In-between » cartographic representations from the abstraction of topographic maps to the realism of orthoimagery Charlotte Hoarau @CartHoarau This work is granted by the French National Research Agency, within the project, with the reference ANR-12-CORD-0025.