Google Earth Blog

Programmer Writes World’s Biggest Hello World

An ambitious German programmer decided to write the world’s biggest “Hello, World!” result. Those of you who are programmers know that writing your first code in a programming language usually involves writing a program to print out the words “Hello, World!”. It’s been a tradition for several decades now. This guy decided to show the words in a crop field so it would be visible in aerial photos. Only, he decided to do it in the form of a Semacode (a visual code – or bar code – for containing information). Semacodes are being used to share URL’s for example which are machine readable. He found a crop field and mowed the crop such that the semacode was visible from the air. Then he took a picture of the field from an airplane. A machine could read this giant code and get the words “Hello, World!”. You can read his description of the project, or visit his web site. Here is the image overlay showing the Hello World in Google Earth from his aerial photo. The resulting semacode is about 160 meters square, and his image overlay blends very well with the base imagery. Also, I recommend checking out his Flickr photo journal showing the project in progress.
Here are some other examples of interesting things found in Google Earth’s aerial/satellite photos:

Big News: New Imagery June 2 | GE 4.1 Beta Released! | Google StreetView

About Frank Taylor

Frank Taylor started the Google Earth Blog in July, 2005 shortly after Google Earth was first released. He has worked with 3D computer graphics and VR for many years and was very impressed with this exciting product. Frank completed a 5.5 year circumnavigation of the earth by sailboat in June 2015 which you can read about at Tahina Expedition, and is a licensed pilot, backpacker, diver, and photographer.

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