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I'm searching for multi-spectral high resolution satellite images for flood events.
I found a database of flood events from this link with dates and approxiamte locations (polygons) and I used the Sentinel API hub to download images. The problem is that images are too large and cannot found the intresting regions and cannot get images of the exact same location for two different dates. (to compare pre and post events).
Is there a way to get a free dataset of high resolution satellite images for **flood events (pre and post disater)?
BTW, I want to apply machine learning algorithms on these images.

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You may consider using Google Earth Engine: filter desired imagery by date (pre-post flood) and location (polygons of approximate locations). Machine learning algorithms like random forest is readily available there also.

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High resolution imagery is available via EOS LandViewer with built-in tools available for image analysis. You can compare two images side-by-side as well.

Here’s a quick guide on high-resolution satellites and their resolution details:

  • Pléiades 1A, 1B (up to 0.5 m/pxl)
  • SPOT 6, 7 (up to 1.5 m/pxl)
  • SPOT 5 (up to 2.5 m/pxl)
  • KOMPSAT-2 (up to 1 m/pxl)
  • KOMPSAT-3А (up to 0.4 m/pxl)
  • KOMPSAT-3 (up to 0.5 m/pxl)
  • SuperView-1 (up to 0.5 m/pxl)
  • Gaeofen 1 (up to 2 m/pxl)
  • Gaeofen 2 (up to 3.2 m/pxl)
  • Ziyuan-3 (up to 2.1 m/pxl)

Both optical and radar data is available — with global coverage, and short revisiting period that varies from 2 to 5 days.

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