Using the railway network as a flatbed scanner [video]

(media.ccc.de)

17 points | by Jimmc414 2 hours ago

5 comments

jo-m 38 minutes ago

Basically the inverse of https://daniel.lawrence.lu/photos/ or https://trains.jo-m.ch/ ;)

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- contr-error 15 minutes ago
  
  The former is in the prior art section at 2:24!
slipheen 44 minutes ago

I love this so much! This is such a cool hack, just for the sake of it. Amazing hacking and amazing art!
In the preso, she has said the full size output is on the website-
can anyone see what that link is? I didn't find it on the video page, but I might've just missed it.

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- azalemeth 11 minutes ago
  
  http://philo.gay/linecam/gallery.html -- it's linked within the middle of the talk.
- contr-error 13 minutes ago
  
  https://philo.gay/linecam/
ted_dunning 1 hour ago

It would have been pretty easy to use a horizontal line scanner to get image speed.
In any case, it seems that using a full frame video would be much easier to post process since frame to frame correlation tells you everything you need to know about motion.

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- xnx 16 minutes ago
  
  One of the first scripts I vibecoded did exactly this. It works well, but is limited by framerate when there's high motion.
- leni536 14 minutes ago
  
  I'm not sure that video would have been easier to postprocess. At what fps and shutter speed?
lalalandland 1 hour ago

Using the camera as a scanner has a long history in satellite cameras and other aerial photography
sciencesama 1 hour ago

they need to connect with the skunkworks team, they solved this problem on sr 71 long time back !