Does anyone know how I would best replicate in Rhino the terrain in the attached grayscale hillshade image?
It’s a slope down to a beach where the pixels cut-off at the top. I don’t have any way of accessing the original LiDAR data so I thought I could maybe reverse engineer the image that I can download. Thought of using a GH python code in grasshopper to read it based on brightness at first but then these images take into account light sources with a zenith and azimuth, as well as the slope and aspect of the terrain in the original land data. Tried getting some help from chatGPT as I am not great at scriptwriting but keep running into dead ends, and unsure if this is really the way to go about it!
Not sure it’s possible but figure I’d ask the wonderful experts on here rather than the clumsy Ai bot!
Any help will be much appreciated!
My Bad … I assumed you had already looked for DEM.
Here’s a site that is selling the data for a modest cost, however, its also possible you may find it for free somewhere else.
This site has the DEM it as a Geotiff, which I believe can be converted to a greyscale DEM, it would be more convenient if you can find it as greyscale so you don’t need to do the conversion. Note it is not as simple as just changing it to greyscale.
That video is really cool. So you are not getting just the topography, but any structures or buildings that have been added, its grabbing it from the 3d graphics display rather than a specific download.
The method shown results in a file that must be arbitrarily scaled based on some known distance, so the accuracy would only be as good as the reference.