http://www.eomf.ou.edu/
Datasets – Geo-Referenced Field
Photo Library
• Register a user
• Log in
• Upload
– Please upload individual files or a zip file of
images (png, jpeg, gif) , < 650 MB
• Edit the uploaded file and publish them
• Query the photo library
• Upload your homework 1 photo to the library
• Be sure the photo has been geotagged and
change photo name to building names before
upload
• Edit the online comment,
– Change Status to Public
– Choose right Category
– Description: OU Building, Building Name, 2009 Spring
field method course, Your name.
• Check the results
• Query in the library
Query Photo
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Seach keywords: OU building
Or seach your own user name
Submit the query
Check the photo
Scroll down and select file type and size
Download the file
Open in google earth
Google Earth
• http://earth.google.com/
• A virtual globe, map and geographic
information program that was originally
called Earth Viewer, and was created by
Keyhole, Inc, a company acquired by
Google in 2004.
• It maps the Earth by the superimposition
of images obtained from satellite imagery,
aerial photography and GIS 3D globe.
Release History
• Released as Google Earth in 2005,Availabe on
Microsoft Windows 2000, XP, Vista, Mac OS X
10.3.9 and above, Linux (released on June 12,
2006), and FreeBSD.
• also available as a browser plugin (released on
June 2, 2008) for Firefox, Safari 3, IE6 and IE7.
• available on the iPhone OS on October 27, 2008,
as a free download from the App Store.
• In addition to releasing an updated Keyhole
based client, Google also added the imagery
from the Earth database to their web based
mapping software. Google map.
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Keyhole Earthviewer 1.0 - June 11, 2001
Keyhole Earthviewer 1.4 - 2002
Keyhole Earthviewer 1.6 - February 2003
Keyhole LT 1.7.1 - August 26, 2003
Keyhole NV 1.7.2 - October 16, 2003
Keyhole 2.2 - August 19, 2004
Google Earth 3.0 - June 2005
Google Earth 4.0 - June 11, 2006
Google Earth 4.1 - May 9, 2007
Google Earth 4.2 - August 23, 2007
Google Earth 4.3 - April 15, 2008
Google Earth 5.0 Beta - February 2, 2009
Resolution
• Resolution available is based somewhat
on the points of interest and popularity
• Most land (except for some islands) is
covered in at least 15 meters of resolution.
• Melbourne, Victoria, Las Vegas, Nevada,
and Cambridge, Cambridgeshire include
examples of the highest resolution, at 15
cm (6 inches).
Search and DEM
• search for addresses for some countries,
enter coordinates, or simply use the
mouse to browse to a location.
• 3D images of terrain and buildings are
available
• digital elevation model (DEM) data
collected by NASA's Shuttle Radar
Topography Mission (SRTM).
KML
• Many people use the applications to add
their own data, making them available
through BBS or blog
• Google Earth is able to show all kinds of
images overlaid on the surface of the earth
and is also a Web Map Service client.
• Google Earth supports managing threedimensional Geospatial data through
Keyhole Markup Language (KML).
3D building and Street View
• 3D buildings and structures (such as bridges),
which consist of users' submissions using
SketchUp, a 3D modeling program.
• In version 4.3 released on April 15, 2008,
Google Street View was fully integrated into the
program allowing the program to provide an on
the street level view in many locations.
• 360°panoramic street-level views
Ocean Imagery
• version 5.0 (February 2009) , the entirety of
Google Earth's ocean floor imagery was updated
to new images by SIO, NOAA, US Navy, NGA,
and GEBCO.
• Google Ocean feature allows users to zoom
below the surface of the ocean and view the 3D
bathymetry beneath the waves.
• On April 14, 2009, Google added underwater
terrain data for the Great Lakes.
Wikipedia and Panoramio
• Geographic Web Layer integration with
Wikipedia and Panoramio
• Wikipedia entries are scraped for
coordinates via the Coord templates
• Panoramio is a geolocation-oriented photo
sharing website.
Sky mode
• In version 4.2, released August 22, 2007,
Google Earth added a Sky tool for viewing
stars and astronomical images
• Hubble Space Telescope
• web-based version of Google Sky
available at http://www.google.com/sky/
Historical Imagery
• Introduced in version 5.0
• Traverse back in time and study earlier
stages of any place.
• Very useful for research purposes that
require analysis of past records of various
places.
Mars
• Introduced in Version 5.0
• A separate globe of the planet Mars
• The maps are of a much higher resolution than those on
the browser version of Google Mars
• 3D renderings of the Martian terrain.
• extremely high resolution images from the Mars
Reconnaissance Orbiter's HiRISE camera that are of a
similar resolution to those of the cities on Earth.
• high resolution panoramic images from various Mars
landers, such as the Mars Exploration Rovers, Spirit and
Opportunity, that can be viewed in a similar way to
Google Street View.
Coordinate System and Projection
• The internal coordinate system of Google Earth
is geographic coordinates (latitude/longitude) on
the World Geodetic System of 1984 (WGS84)
datum.
• Google Earth shows the earth as it looks from an
elevated platform such as an airplane or orbiting
satellite.
• The projection used to achieve this effect is
called the General Perspective. This is similar to
the Orthographic projection, except that the point
of perspective is a finite (near earth) distance
rather than an infinite (deep space) distance.
Baseline resolutions
• U.S.: 15 m (some states are completely in 1 m
or better)
• Germany, Switzerland, Netherlands, Denmark,
U.K., Andorra, Luxembourg, Liechtenstein, San
Marino, Vatican City: 1 m or better
• Czech Republic 0.2 m (Prague 0.1 m) Slovakia,
Hungary: 2.5 m (medium resolution)
• Global: Generally 15 m (some areas, such as
Antarctica, are in extremely low resolution), but
this depends on the quality of the satellite/aerial
photograph uploaded.
Typical high resolutions
• U.S.: 1 m, 0.6 m, 0.3 m, 0.15 m (extremely
rare; e.g. Cambridge and Google Campus,
or Glendale)
• Europe: 0.3 m, 0.15 m (e.g. Berlin, Zürich,
Hamburg), 0.1 m Prague
Altitude resolution
• Surface: varies by country
• Seabed: Not applicable (a colorscale
approximating sea floor depth is "printed"
on the spherical surface).
Age: Images dates vary
• The image data can be seen from squares made when
DigitalGlobe Coverage is enabled. The date next to the
copyright information is not the correct image date.
• Zooming in or out could change the date of the pictures.
• Most of the international urban image dates are from
2004 and have not been updated.
• However, most US images are kept current.
• Google announces imagery updates on their LatLong
Blog in form of a quiz, with hints of the updated locations.
The answers are posted some days later in the same
blog. http://google-latlong.blogspot.com/
GPS integration
• read tracks and waypoints from a GPS
device.
• A variety of third party applications can
generate KML or KMZ files based on userspecified or user-recorded waypoints.
• Real-time navigation
User Guide
• Help – User Guide
• Help – Tutorial
• Help – shortcut
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1.Search panel - Use this to
find places and directions and
manage search results.
Google Earth EC may display
additional tabs here.
2. 3D Viewer - View the globe
and its terrain in this window.
3. Toolbar buttons - See
below.
4. Navigation controls - Use
these to zoom, look and
move around (see below).
5. Layers panel - Use this to
display points of interest.
6. Places panel - Use this to
locate, save, organize and
revisit placemarks.
7. Add Content - Click this to
import exciting content from
the KML Gallery
8. Status bar - View
coordinate, elevation, imagery
date and streaming status
here.
9 Overview map - Use this
for an additional perspective
of the Earth.
The Google Toolbar
Full
Screen
Add Polygon
Add Path Add ruler
Sky View
Printer
View in
Google Maps
Create a
Place mark
Add Image
overlay
Earth day
view
The Google Sidebar
Search bar
Tour Player
My Places
Sightseeing
Layers
Set transparency
level of overlays
Tour player
Navigating on the Earth
• http://earth.google.com/intl/en/userguide/v
5/tutorials/navigating.html
Tips
• Use keyboard to navigate
– Page up page down
– Arrow to move
– Shift+Up,down to tilt shift + left,right to rotate
– N to north up
• This will help you to work in field without
mouse
Tips
• Tools - Options
• Change elevation exaggeration to 3 to
give you exaggerated terrain
• Go to Cache tab
– Chang the disk cache size to 2000 MB
– This will give you more cache for offline
Google Earth Community
• dedicated to producing placemarks of
interesting or educational perspectives
http://bbs.keyhole.com
• http://www.youtube.com/user/Google
• http://www.youtube.com/user/GoogleEarth
VideoHelp
• http://www.youtube.com/user/SketchUpVid
eo
• http://wikimapia.org/