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kylebarron on May 5, 2021 | parent | context | favorite | on: Learning About the GeoTIFF File Format with a Hex ...

This is a good hex editor overview, but also the part about Cloud-Optimized GeoTIFFs is quite good. In the past couple of years COGs have really revolutionized the satellite imagery industry. Even USGS has seen this is the future and publishes the official Landsat data in Cloud-Optimized GeoTIFF format [0].

I've been leveraging COGs recently to quickly bring satellite imagery into the browser for analysis [1].

[0]: https://www.usgs.gov/core-science-systems/nli/landsat/landsa...

[1]: https://www.unfolded.ai/blog/2021-04-28-raster-layer/

alleycat5000 on May 5, 2021 [–]

We use COGs at work with mapserver (and GDAL's /vsis3/ magic) to serve up imagery internally for qa/qc:

https://github.com/pedros007/mapserver-docker

Literally saves hundreds of thousands of dollars a year by avoiding having to stage the imagery locally before serving it out!

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