The photos are fed to a program which identifies individual spots on the object and, though a combination of trigonometry and dark magic, deduces their location in 3 dimensions. Every part of the object must appear in at least 3 photos to be captured.
You take a bunch of photos of an object you want to capture. If you want to learn more about 3d scanning and printing be sure to check out my podcast " 3d Printing Today". Just click on the white triangle to start, then you can experience the scan in 3d.
Throughout this instructable you will find embedded 3d scans which you can explore thanks to our friends at Sketchfab. Combined with a little technique and some inexpensive or even free software, your camera becomes the world's most versatile 3d scanner. This tool, which will allow you to capture the world in amazing 3d, is a simple camera. It might be in your pocket, or you may be staring at it as we speak (so to speak.actually I'm writing and you are reading, but you know what I mean). The most amazing thing about 3d scanning is that you probably already own the best tool there is for it. Now you can do that in 3d with real stuff as well. Think of everything you can do with a picture in Photoshop. You can also use the scan as a starting point for a new creation. With a 3d scan and the right printer you can reproduce any object at any size from a house to an earring. There are many ways to make a 3d model, but one of the coolest is to 3d scan an existing object. We are now capable of printing almost anything provided we have a 3d model to work from. If you haven't been living under a rock for the last few years you have probably heard all the cool stuff that is going on with 3d printing.
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