How do you get the x scaling right? You have to measure the speed of the train s... | Hacker News

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		svara on April 29, 2023 \| parent \| context \| favorite \| on: Ask HN: Most interesting tech you built for just y... How do you get the x scaling right? You have to measure the speed of the train somehow?

dllu on April 29, 2023 [–]

When the train is moving at a constant speed, you can just scale the image manually to make it just right. If it's moving at a non-constant speed, you can apply a spline or similar to remove the distortion.

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