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NorthStarUAS / ImageAnalysis

Aerial imagery analysis, processing, and presentation scripts.
MIT License
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SRTM requests do not work #14

Closed njwitthoeft closed 3 years ago

njwitthoeft commented 3 years ago

Hello,

I am attempting to run process.py on a dataset. The FTP server the srtm data is pulled from does not appear to be active. Any tips? image

clolsonus commented 3 years ago

Hi Nicholas,

Yes I noticed recently that the usgs.gov site has been extremely unreliable for downloading SRTM tiles. There is another site: https://bailu.ch/dem3/ that seems to be working better, so I just pushed a code change to switch the download source.

If this still gives you trouble, I've also been able to download the tiles manually and move them to /var/tmp (where the code caches them). If the file is already there, the code won't try to download it again.

Hope that helps ... there's more nuance to discover with optimizing for your specific camera and different matching strategies, and then later possibly cleaning up outliers that slip through, so feel free to ask questions as you go and I'll do my best to help out.

njwitthoeft commented 3 years ago

This change worked great to solve that issue. I have been modifying as I go to solve small problems. I am running on a Windows environment. Is there a place you'd like me to keep track of the necessary changes?

clolsonus commented 3 years ago

I don't have a specific best place for changes ... I'm not a super github wrangler, I just do basic git stuff, but if you can send me the changed files or a diff if they aren't too complicated I'd be happy to review your fixes/suggestions and roll them into the main line if they make sense.

On Sat, Oct 2, 2021 at 9:36 AM Nicholas Witthoeft @.***> wrote:

This change worked great to solve that issue. I have been modifying as I go to solve small problems. I am running on a Windows environment. Is there a place you'd like me to keep track of the necessary changes?

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