MIXING, BLENDING, MERGING OR SCRAMBLING TOPOGRAPHIC MAPS AND ORTHOIMAGERY IN GEOVISUALIZATION?

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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 27 th 2013

2 CONTEXT AND OBJECTIVE OF MY PHD

3 Aims of my PhD Orthoimagery Topographic map 4

4 Aims of my PhD Orthoimagery Topographic map How to combine them to build in-between visualizations? 5

5 Continuum of «In-between» representations build with the French Geoportail 6

6 Continuum of «In-between» representations build with the French Geoportail 7

7 Continuum of «In-between» representations build with the French Geoportail 8

8 Continuum of «In-between» representations build with the French Geoportail 9

9 Continuum of «In-between» representations build with the French Geoportail 10

10 Continuum of «In-between» representations build with the French Geoportail 11

11 Browsing «In-Between»visualizations Orthoimagery Topographic map 12

12 13

13 Browsing «In-between» representation Topographic Map Orthoimagery 14

14 Browsing «In-between» representation Topographic Map Orthoimagery 15

15 Browsing «In-between» representation Topographic Map Orthoimagery 16

16 Browsing «In-between» representation Topographic Map Orthoimagery 17

17 Browsing «In-between» representation Topographic Map Orthoimagery 18

18 Browsing «In-between» representation Topographic Map Orthoimagery 19

19 Browsing «In-between» representation Topographic Map Orthoimagery How to provide the more useful information to the user? 20

20 PERSISTENT PROBLEMS IN CURRENT VISUALIZATIONS

21 Layer overlaid Map design issue : Orthoimagery is dark and visually complex Difficulty to symbolize vector layers in consistency with different backgrounds 22

22 Side-by-side co-visualizations Swipe Synchronized visualization Magnifier 23

23 Layer transparency [Hoarau, AutoCarto 2012] No consensus in designing mixed visualizations by transparency Using transparency leads to data scrambling 24

24 Toponym representation [Hoarau & Escrihuela 2013] Géoportail, IGN France Bing maps, Microsoft Google maps 25

25 DESIGNING IN-BETWEEN REPRESENTATIONS

26 Map design issues 27

27 Map design issues How to portray vector data overlaid to an imagery background? 28

28 CAMOUFLAGE METHOD Making maps more realistic

29 «Camouflage» method Using landscape colors to make maps more realistic [Patterson 2010] [Christophe, Perret, Hoarau 2013] 30

30 «Camouflage» method Extracting colors from the orthoimagery Re-injecting them in the map specification 31

31 «Camouflage» method 32

32 «Camouflage» method 33

33 «Camouflage» method Charlotte Hoarau 26th International Cartographic Conference, Dresde 27/08/

34 «Camouflage» method Charlotte Hoarau 26th International Cartographic Conference, Dresde 27/08/

35 PATCHWORK METHOD Keeping the best of each visualization

36 «Patchwork» method Keeping the best parts of each initial visualizations Master Student [J. Gautier, 2012] Charlotte Hoarau 26th International Cartographic Conference, Dresde 27/08/

37 «Patchwork» method Keeping the best parts of each initial visualizations Master Student [J. Gautier, 2012] 38

38 «Patchwork» method Keeping the best parts of each initial visualizations Master Student [J. Gautier, 2012] Charlotte Hoarau 26th International Cartographic Conference, Dresde 27/08/

39 «Patchwork» method 40

40 Camouflage by swiping 41

41 ADAPTIVE SYMBOLIZATION Orthoimagery as a specific background layer

42 Adaptive symbolization Different visual impact of background layers «Inversion» of conventional colors 43

43 Local adaptive symbolization Wide variety of colors in an orthoimagery background Local adaptation of the color of the roads 44

44 Local adaptive symbolization Wide variety of colors in an orthoimagery background Smart halo around the roads 45

45 In-Between Steps 47

46 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 48

47 This work is granted by the French National Research Agency, within the project, with the reference ANR-12-CORD «In-between» cartographic representations from the abstraction of topographic maps to the realism of orthoimagery Charlotte

How to design a cartographic continuum to help users to navigate between two topographic styles?

How to design a cartographic continuum to help users to navigate between two topographic styles? Jérémie Ory, a Guillaume Touya, a Charlotte Hoarau, a and Sidonie Christophe a a Univ. Paris-Est, LASTIG