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Show HN: Isopolis – Isometric pixel map of SF

sf.isopolis.city

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Re: Show HN: Isopolis – Isometric pixel map of SF

#31

Post by nuwandavek »

lawrencechen wrote: post #12

Behind the scenes stuff: https://sf.isopolis.city/dev.html > The source is Google Photorealistic 3D Tiles. Isometric.nyc explored and rejected the use of 3d building data. It is pretty insane that US gov has free LIDAR data for every city in the US available to the public. I spent > Now that we have the 3D tiles, we need to generate the ground truth pairs for training! Similar to isometric.nyc, I generated a few ghib…

glad you liked it!

I had to leave out a ton of details in the training process. But at every step, codex/cc built me a dev tool to navigate the complexity. That was such a unique side project experience.

Re: Show HN: Isopolis – Isometric pixel map of SF

#32

Post by nuwandavek »

simonw wrote: post #19
lawrencechen wrote: post #12

Behind the scenes stuff: https://sf.isopolis.city/dev.html > The source is Google Photorealistic 3D Tiles. Isometric.nyc explored and rejected the use of 3d building data. It is pretty insane that US gov has free LIDAR data for every city in the US available to the public. I spent > Now that we have the 3D tiles, we need to generate the ground truth pairs for training! Similar to isometric.nyc, I generated a few ghib…

> I'm stoked for the golden era of side-projects! Love that attitude. Me too!

very inspired by you!

Re: Show HN: Isopolis – Isometric pixel map of SF

#34

Post by nuwandavek »

flomo wrote: post #22

Just one little thing: East of Buena Vista Park, you have a lake, it is actually the road which goes around the park. Also, I would love to zoom in more. (pls give me the pixels)

Spurious lakes are an interesting issue I looked into a bit. 2 types of cases ended up becoming lakes: 1. "shadows" 2. flat green areas

I think a better data distribution should eliminate this. Also, my "water detector" was not too good and could be improved.

I wrote about a few of these things here: https://sf.isopolis.city/dev.html

Re: Show HN: Isopolis – Isometric pixel map of SF

#35

Post by nuwandavek »

cyanregiment wrote: post #24

A few AI anomalies, like several roads turning into rivers and lakes. There are also a few massive square ponds in the Tenderloin that I am pretty sure do not exist lol But I like the idea.

yeah, there are a ton of issues wrt water. I've documented a few of them here: https://sf.isopolis.city/dev.html

Planning to fix in the next version!

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