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Google Earth – How Google maps the world

How Google Earth works Credit: Bryan ChristieTechnology Review explains how aerial photos and satellite images are combined to create one of the most useful tools on the Internet, Google Earth. The magazine interviewed engineers at Google and at ­DigitalGlobe, the company that supplies Google’s satellite photos, and did a little bit of reverse-engineering to figure out how it works.

MIT’s magazine presents a five step process:

1. High-Resolution Imagery
2. Ground Station and Postprocessing
3. Aerial Photography
4. Digital Pyramids
5. www.google.com/maps


Technology Review (November/December 2007) – Google Earth