Using a Railway as a Massive Flatbed Scanner

By taking a camera, pointing it out the window of a train, and keeping track of how fast the train is moving, you can create very wide panoramic scans of the scenery. It’s a little more complicated than that — all the details are here — but you’re essentially using the train (or ferry) as a massive flatbed scanner. I knew from the start that I’d need to measure the speed somehow, but I was naïvely