2. Intro.wmv

6. CaveMaps.org 300+ Entrances on Google Maps 70+ Cave Outlines on Google Maps 500+ Full resolution surveys 1200+ Surveys catalogued & thumb-nailed 120 Visits per week No. 1 Google Hit for ‘Cave Maps’ Work in progress...

8. Contributing Clubs CPC RRCPC BPC NCC LUSS YSS ULSA Black Sheep Diggers KCC NPC

9. Google Earth Overlay

10. Scanning Old Cave Surveys

13. E.g. 300 DPI Greyscale Scan at the highest resolution

20. Don’t Save as JPEG

22. Preserve Anti-aliasing

24. How to restore Anti-aliasing Scan at high DPI Clean up the image Resample to reduce image size

25. Transparent Backgrounds

27. 1 st Attempt: Magic Wand

31. 2 nd Attempt: Colour Replacement

33. 3 rd Attempt: Colour to Alpha

37. Google Earth Overlays

38. Double Entrance.avi Double Entrance (part 2).avi Videos\Single Entrance.wmv

41. Google Map Tiles

42. Zoom 0Zoom 1 256 pixels

43. Zoom 1 (4 tiles)Zoom 2 (16 tiles)

44. 2621 Terabytes

45. Zoom 19Zoom 21Street View

49. Photoshop

51. Kml2Tiles.exe

52. Input: KML

53. Output: Map Tiles

55. DeepZoom

56. Ease Gill Galegarth The West Kingsdale System DeepZoom Examples

58. Microsoft ICE

59. iPhone DeepZoom Viewer

60. CaveMaps.org/bing

61. Offline Mobile Cave Overlays Video

64. Is Google Maps more accurate than GPS?

65. Google Maps – Errors due to Elevation

66. Blackpool Tower 150m: Error 26m Ingleborough 723m: Error 125m?

67. Google Maps – Changes over Time

68. 2000 - 2010

69. Google v Microsoft GoogleMicrosoft 4m Difference

70. GPS Accuracy: +/- 10m Google Maps Accuracy: +/- 10m ? Conclusion