Color and textures interpolation for homogeneous sliding between orthoimagery and vector data (Charlotte Hoarau)

1. Color and Texture Interpolation Between Orthoimagery and Vector Data Charlotte Hoarau, Sidonie Christophe GeoVIS - ISPRS GeoSpatial Week - Thursday, October 1srt 2015

2. CONTEXT and CHALLENGES Hybrid visualization between maps and imagery

3. 3C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Long term purpose  Modelisation of the cartographic style  Style navigation between cartographic representations → Design method to create Cartographic Continuum Topographic Map Imagery

4. 4C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Design challenges Create efficient hybrid visualizations → Avoid global image blending by transparency → Understand the perception of conveyed information → Create smooth transition to help cognitive tasks (such as feature recognition, territory comprehension, etc.)

5. 5C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Heterogeneous visual perception 02.07.1

6. 6C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week  Abstract representation of the real world “All maps are abstractions of the reality” [Robinson et Al. 95]  Information is identified, interpreted, structured and hierarchised  Abstraction steps in the cartographic process  Data selection  Data generalization  Data symbolization Topographic map perception

7. 7C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Imagery perception  Realistic representation from the sky  Photo-realism effect  Automated acquisition  Continuous representation  Non encoded information  Increased credibility in a “ground truth”  Difficult to interpret as “raw” data

8. 8C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Question research Orthoimagery Topographic map  How to merge them into an hybrid visualization ?  How to create visual and progressive transitions ?

9. METHODOLOGY Visual properties interpolation

10. 10C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Mixing imagery and vector data Vector Cartographic Database Raster Imagery Database Hybrid Visualization

11. 11C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Merging visual properties : Color and Texture  From the map : bright colors (conventional or abstract)  From the imagery : natural textures and colors  Procedural rendering methods

12. 12C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Methodology Determining pivot symbolizations

13. 13C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Pivot symbolization  Using endings visual properties

14. 14C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Pivot symbolization  Using endings visual properties

15. 15C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Methodology Determining pivot symbolizations Interpolating Symbolization parameters

16. 16C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Color interpolation Applied to the hydrography Map color Natural color

17. 17C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Raster Color Interpolation

18. 18C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Applied to buildingsgs Natural texture interpolation Plain color Transparent color

19. 19C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Procedural texture interpolation Applied to the vegetation Procedural texturePlain color

20. 20C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week  How to choose pivot symbolizations ?  How to combine parameter interpolations ? Interpolation parameterization 02.07.1

21. 21C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week  How to synchronize cartographic themes ?? Imagery Map 02.07.1 Interpolation parameterization Using the perceived realism level

22. 22C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Interactive online user test 02.07.1

23. 23C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week  The texture is more relevant to control the realism level  Validation of one interpolation combination Main results on realism perception 02.07.1

24. CARTOGRAPHIC RESULTS Realism-Abstraction Continuum

25. 25C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Continuum design

28. 28C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Continuum design Color Interpolation Texture Interpolation

29. 29C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Continuum design Color Interpolation Texture Interpolation

30. 30C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Cartographic Continuum

36. 36C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Cartographic Continuum Style IGN Style OSM

39. 39C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Cartographic Continuum Style IGN Style OSMStyle IGN Style OSM

42. CONCLUSION and PERSPECTIVES Hybrid visualization between maps and imagery

43. 43C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week Cartographic continuum design  Interpolating color and texture properties allows to create smooth graphic transitions → How to evaluate the evolution of the perception by merging representations ?

44. 44C. Hoarau, S. Christophe GeoVIS – ISPRS GeoSpatial Week  Integration of continuum in multiplexing tools → How to support specific cognitive tasks ? Interaction with cartographic continuum

45. Color and Texture Interpolation Between Orthoimagery and Vector Data Charlotte Hoarau, Sidonie Christophe GeoVIS - ISPRS GeoSpatial Week - Thursday, October 1srt 2015

Color and textures interpolation for homogeneous sliding between orthoimagery and vector data (Charlotte Hoarau)

Color and textures interpolation for homogeneous sliding between orthoimagery and vector data (Charlotte Hoarau)

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Color and textures interpolation for homogeneous sliding between orthoimagery and vector data (Charlotte Hoarau)