Post on 08-Apr-2017
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
CONTEXT AND OBJECTIVE OF MY PHD
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Aims of my PhD
Orthoimagery Topographic map
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Aims of my PhD
How to combine them to build in-between visualizations ?
Orthoimagery Topographic map
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Continuum of « In-between » representations build with the French Geoportail
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Continuum of « In-between » representations build with the French Geoportail
8 Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013
Continuum of « In-between » representations build with the French Geoportail
9 Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013
Continuum of « In-between » representations build with the French Geoportail
10 Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013
Continuum of « In-between » representations build with the French Geoportail
11 Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013
Continuum of « In-between » representations build with the French Geoportail
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Browsing « In-Between »visualizations
Orthoimagery Topographic map
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Browsing « In-between » representation
Orthoimagery
Topographic Map
15 Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013
Browsing « In-between » representation
Orthoimagery
Topographic Map
16 Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013
Browsing « In-between » representation
Orthoimagery
Topographic Map
17 Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013
Browsing « In-between » representation
Orthoimagery
Topographic Map
18 Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013
Browsing « In-between » representation
Orthoimagery
Topographic Map
19 Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013
Browsing « In-between » representation
Orthoimagery
Topographic Map
20 Charlotte 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?
PERSISTENT PROBLEMS IN CURRENT VISUALIZATIONS
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Layer overlaid
Map design issue : Orthoimagery is dark and visually complex
Difficulty to symbolize vector layers in consistency with different backgrounds
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Side-by-side co-visualizations
Swipe Synchronized visualization
Magnifier
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Layer transparency [Hoarau, AutoCarto 2012]
No consensus in designing mixed visualizations by transparency
Using transparency leads to data scrambling
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Toponym representation
© Géoportail, IGN France © Bing maps, Microsoft © Google maps
[Hoarau & Escrihuela 2013]
DESIGNING IN-BETWEEN REPRESENTATIONS
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Map design issues
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Map design issues
How to portray vector data overlaid to an imagery background ?
CAMOUFLAGE METHOD
Making maps more realistic
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« Camouflage » method
Using landscape colors to make maps more realistic
[Christophe, Perret, Hoarau 2013]
[Patterson 2010]
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« Camouflage » method
Extracting colors from the orthoimagery
Re-injecting them in the map specification
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« Camouflage » method
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« Camouflage » method
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« Camouflage » method
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« Camouflage » method
PATCHWORK METHOD
Keeping the best of each visualization
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« Patchwork » method
Keeping the best parts of each initial visualizations
Master Student [J. Gautier, 2012]
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« Patchwork » method
Keeping the best parts of each initial visualizations
Master Student [J. Gautier, 2012]
39 Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013
« Patchwork » method
Keeping the best parts of each initial visualizations
Master Student [J. Gautier, 2012]
40 Charlotte Hoarau 26th International Cartographic Conference, Dresde – 27/08/2013
« Patchwork » method
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Camouflage by swiping
ADAPTIVE SYMBOLIZATION
Orthoimagery as a specific background layer
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Adaptive symbolization
Different visual impact of background layers
« Inversion » of conventional colors
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Local adaptive symbolization
Wide variety of colors in an orthoimagery background
Local adaptation of the color of the roads
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Local adaptive symbolization
Wide variety of colors in an orthoimagery background
Smart halo around the roads
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In-Between Steps
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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
« 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.