Geo-reference of historical maps

1. Geo-spatial sypozium, Cluj, 19-20 April, 2013 Geo-reference of historical maps dr. Timár Gábor Dept. of Geophysics and Space Science Eötvös University, Budapest, Hungary Eötvös Loránd Tudományegyetem Földrajz- és Földtudományi Intézet 1117 Budapest, Pázmány Péter sétány 1/A

2. Overview: • Geo-reference of historical regional maps • Guess of the projection and projection parameters • Geo-reference using latitude and longitude lines, then the local projection • Export to Google Earth • A real difficult example: the Lazarus map of 1528

3. Try this: an old map of the historical Hungary Goetz & Probst, 1804

4. Try this: an old map of the historical Hungary Meridians: lines to a common pole; prime meridian: Ferro

5. Try this: an old map of the historical Hungary Parallels: mostly invisible but assumed to be concentric circles

6. Try this: an old map of the historical Hungary

7. Try this: an old map of the historical Hungary

8. Try this: an old map of the historical Hungary Standard parallel: from the meridian angles of the mapCentral meridian: the vertical oneOrigin latitude: not important 

9. Try this: an old map of the historical Hungary Projection!GCPs should be converted into the real map projection

10. Try this: an old map of the historical Hungary Google Earth needs to reproject the map to WGS84/GEOGRAPHIC system...

11. Try this: an old map of the historical Hungary Google Earth needs to reproject the map to WGS84/GEOGRAPHIC system... and...

12. Try this: an old map of the historical Hungary

13. A new blog to be launched: http://oldmapsingis.blogspot.com

14. A much more harder target: Lazarus (1528) 600 GCPs from all around the map

15. „Brute force” way Linear fit to UTM33

16. „Brute force” way Quadratic fit to UTM33

17. „Brute force” way Cubic fit to UTM33

18. Ptolemian point list

19. Ptolemian projection... To be defined in GIS

20. The geo-referred map... Really?

21. Latitude-longitude grid

22. Coastlines and rivers

23. Geo-reference How to choose the standard parallel in the Equidistant Conic (Ptolemian) projection: false selection (left), correct selection (right)

24. Thanks for the attention