Technology 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