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Thread: Creating a height map of the seafloor

  1. #1

    Discuss Creating a height map of the seafloor

    Anyone willing to share their practices on creating a seafloor height map?
    I am thinking about creating a collage of real-world data (just like for the surface), and then eroding it, but have no ideas what kind and order of erosion to apply
    My current map is a 8 bit grayscale of the surface relief and the water is marked as black.

  2. #2
    Administrator Redrobes's Avatar
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    If you take real world data to collage then presumably you wont need to erode it as it will have been done so already.

    On another point - I would try to use 16 bit or even float format for any height map. Although I guess bathymetry would not be so important as normally you might render the sea on top I think its generally a good idea to use a higher precision format for any heights. That, and you will almost certainly find that downloadable data for bathymetry will be in 16bit format anyway. If I recall correctly, the NOAA data is public domain because its US gov data but you need to make sure to read their licenses.

    https://ngdc.noaa.gov/mgg/global/global.html
    Last edited by Redrobes; 01-04-2022 at 10:07 AM.

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