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image quality

#15
by tfriedel - opened

I looked into some satellogic images and some of them have issues:

  • rgb bands are not aligned properly
    grafik.png

  • weird diagonal stripes

grafik.png

  • images from revisits are not co-registered correctly
    grafik.png

  • shadows / dark patterns

grafik.png

  • orange tinting

grafik.png

I'm trying to train a super resolution model that can upscale sentinel2 using the high res images provided here.
What do you suggest for dealing with these issues?

Satellogic org

Hi @tfriedel , thank you for your message, and sorry for my late reply. You might find some issues with some images (colorcast, geoaccuracy, bandalignment, coregistration). This was an earlier version of our current L1D product. I do recommend you to go through some pre-processing, starting from using the TOA product and then improving bandalignment and co-registration w.r.t. other dates. If you work with the true color image, you may want to match color distributions between Sentinel2 and Satellogic (or try other approaches). By the way, you can access our dataset now through AWS Open Registry Data. Our new website is https://satellogic-earthview.s3.us-west-2.amazonaws.com/index.html (there's a notebook that shows you how to play with Satellogic imagery).

Satellogic org

We've also decided to include imperfect images, as some of the applications we heard included working on models to assess and improve quality.

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