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Asset Overview
DEM data from https://astrogeology.usgs.gov/search/map/Mars/Topography/HRSC_MOLA_Blend/Mars_HRSC_MOLA_BlendDEM_Global_200mp (1)
File was downscaled to 5km resolution The raw data was converted to a PLY file using custom software, see https://theretiredengineer.wordpress.com/2021/01/31/earth-terrain-model-2/
Terrain colour mapping derived from http://soliton.vm.bytemark.co.uk/pub/cpt-city/esri/hypsometry/planet/tn/mars_1.png.index.html
Original 3D file was 500 Mbytes ( >9 million verticies and >18 million faces ). Reduced to <50 Mbytes for upload ( 900,000 verticies and 1.8 million faces ) using Meshlab.
Vertical scale of features magnified 20x
(1) Fergason, R. L, Hare, T. M., & Laura, J. (2018). HRSC and MOLA Blended Digital Elevation Model at 200m v2. Astrogeology PDS Annex, U.S. Geological Survey. http://bit.ly/HRSC_MOLA_Blend_v0
/Screenshots/sphere_01 (1)_110.webp)
