1901 points l2silver | 1 comments | 27 Apr 23 15:04 UTC | HN request time: 0.202s | source

Maybe you've created your own AR program for wearables that shows the definition of a word when you highlight it IRL, or you've built a personal calendar app for your family to display on a monitor in the kitchen. Whatever it is, I'd love to hear it.

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jo-m ◴[28 Apr 23 08:49 UTC] No.35738987[source]▶

>>35729232 (OP) #

I have a rail line right under my apartment, so I built a small computer vision app running on a Rasperry Pi which records each train passing, and tries to stitch an image of it.

It has a frontend at https://trains.jo-m.ch/.

Edit: it's currently raining and the rain drops are disturbing the images a bit.

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Aeolun ◴[28 Apr 23 11:20 UTC] No.35739890[source]▶

>>35738987 #

What’s up with the duplicated cars at the top?

replies(2): >>35740146 #>>35740454 #

1. mkl ◴[28 Apr 23 11:51 UTC] No.35740146[source]▶

>>35739890 #

The camera is pointing at the car. The train is moving past the car. The images of the whole train are made by stitching together lots of photos, all containing the bit of the train in front of the car as it moves past it.

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