https://imagetostl.com/create-3d-heightmap
Create a 3D Heightmap - ImageToStl
Here is a useful tool for converting heightmap images into full 3D heightmap (or elevation) models in either greyscale or full color.
createheightmap
https://www.esenthel.com/forum/showthread.php?tid=2279&pid=15177
Strange grid lines on heightmap
grid linesstrangeheightmap
https://forum.luanti.org/viewtopic.php?t=32491&sid=e016cc7ef876862deea199774a18bbdd
pass a heightmap to mapgen. - Luanti Forums
passheightmapluantiforums
https://assetstore.unity.com/packages/3d/environments/landscapes/stamp-heightmap-tools-island-v3-365934?aid=1011lGbg&pubref=am
Stamp & Heightmap Tools - Island V3 | 3D Landscapes | Unity Asset Store
unity assetstampheightmaptoolsisland
https://assetstore.unity.com/packages/2d/textures-materials/stamp-heightmap-tools-island-v1-365930?aid=1011lGbg&pubref=am
Stamp & Heightmap Tools - Island V1 | 2D Textures & Materials | Unity Asset Store
unity assetstampheightmaptoolsisland