English: I've spent hours 3D scanning NYC subway stations using my iPhone's LiDAR with Polycam3 and rtabmap, using Blender to compose and Affinity Designer to trace a first map as warm up: Nevins St (2/3/4/5).
The underlying 3D scans were some of my first so I was still figuring out how to best get it done with iPhone LiDAR. In this tweet ( https://x.com/sjmielke/status/1773696955908083794 ) you can compare the Polycam scan from months back on the left with the rtabmap scan (shown in Blender) from a few days ago on the right.
Scanning around people is hard. If they're moving, you feel bad for being in the way with your silly phone, if they're stationary, you can't scan the spot they're occupying if you don't want to photograph them. Luckily this station isn't too busy, but others I had to go at night.
While my original plan was to model and render isometric 3D in Blender, realizing that Affinity Designer has convenient isometric protection tools made me curious if this was viable: trace the 3D scan (left, https://x.com/sjmielke/status/1773696963273162878 ), then project and add elevations and decorations (right).
All in all, I've gotten a lot of comfort out of my late night scanning activities and the puzzling afterwards!
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