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by ge96 305 days ago
Tangent, there are these videos on YT of people walking through cities, the ones I like in particular are through Tokyo/Japan. I was thinking it would be cool to build a 3D map from that, it is possible but not my field. I think some companies have done it too. But there is a lot of data on that. Maybe free robot training (walking through a crowd like delivery).

I believe it's a combo of SLAM/photogrammery/VIO but you don't have an IMU so that part would have to be estimated from the video. Maybe the flickering of the lights with the frames probably too fast.

ex. https://youtu.be/ohlzQNCpT7M?si=zH764fDlHqPKyjin&t=537 ex. https://www.youtube.com/watch?v=UZi2GeEGdvM
2 comments
at-fates-hands 305 days ago
There was a guy a long time ago, who did YT videos of the tech markets in Tokyo and it was really surprising some of the best places to get parts for smartphones or robots were completely non-descript buildings in the heart of the city. He specifically went to places that most people wouldn't know about unless you really had great local information.

If someone were to do what you're saying, it would be a huge win for people visiting and being able to find these places. I would love to see this.

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ge96 305 days ago
You reminded me of Strange Parts who was in China, able to pick up random stuff like an iPhone motherboard from a lady selling it on the street.
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quinncom 305 days ago
Do you think those videos of tech markets in Tokyo are still online? I would enjoy seeing them.
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at-fates-hands 304 days ago
I did a quick check because I had saved it and appears the account is no longer active.
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pimlottc 305 days ago
Similarly it would be great to have a tool to do it with stills, like reconstruct a floor plan based on real estate photos. Even if it were partially manually, it would be pretty handy.
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ge96 305 days ago
Matterport seems to do this at least offering you a 3D tour of say an apt complex

edit: although this is not what you're describing, this is literally using a 360 camera

Apple's Room Plan is pretty legit measuring walls/objects in a room but also requires being in the room/moving it around

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