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5 comments

  • Official comment
    Benjamin Trigona-Harany

    Hi, it's now available for Open California users in our APIs (not yet in Planet Explorer).

    You can read about how to use it in the technical blog post Finding the Usable Data in Planet Imagery and in our documentation.

    Best, Ben

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  • Permanently deleted user

    Thanks for your help.

    I understand now.

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  • bas altena

    Dear,

    I have two questions concerning this issue.

    - Looking into the documentation it seems only the basic-level product has a UDM2 layer, is this correct?

    - I was wondering what algorithm is behind the cloud cover, as I am working in snowcovered areas, cloud detection is not trivial and knowing what procedure is behind helps in what level of confidence I can put on this meta data.

    Thanks in advance, Bas

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  • Pooja Pandey

    Hi Bas,

     

    - UDM2 is only available for PSScene4Band at the moment.

    - You can find out more about our UDM2 in the following links:

    https://developers.planet.com/docs/api/udm-2/

    https://medium.com/planet-stories/finding-the-usable-data-in-planet-imagery-64582d21430e

     

    I believe they should contain the answers to your questions. 

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  • bas altena

    Dear Pooja, thank you for your quick response.

    Though from these resources I am unable to find out how these UDM2 data is constructed. Is it done through training, on a scene-per-scene basis through physical/spectral relations or through stacking? If available, can references be provided?

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