Here is grayscale heightmap pf the entire world to demonstrate how elevation values are represented by grayscaled pixels. It's zoomable, and as you zoom in on any particular area, the resolution increases. It look like it maxes out at about 90m resolution. If you will notice the "ghostly" quality of the image it produces, you'll see the same quality in the Shroud of Turin.
https://tangrams.github.io/heightmapper/
Here is a demonstration of how the 3D "shape from pixel intensity" works:
http://docs.mcneel.com/rhino/7/help/en-u...tfield.htm
"Rhino" is a 3D object package, sort of like CAD. I tried tinkering with it long ago, but the learning curve was beyond my ability.
I've just now stumbled across the first site above. It looks like one can subset the data for any chosen portion of the Earth's surface and then export that data for use locally, but I've not learned how to use that site yet.
.
https://tangrams.github.io/heightmapper/
Here is a demonstration of how the 3D "shape from pixel intensity" works:
http://docs.mcneel.com/rhino/7/help/en-u...tfield.htm
"Rhino" is a 3D object package, sort of like CAD. I tried tinkering with it long ago, but the learning curve was beyond my ability.
I've just now stumbled across the first site above. It looks like one can subset the data for any chosen portion of the Earth's surface and then export that data for use locally, but I've not learned how to use that site yet.
.