The landscape appears like stairs. This is the case even if I apply grayscale, 16bit, and blur heightmaps. What am I missing?
If using nanite, its apparently a new engine “feature”.
If not then stop.
First of all, heightmap is Data, not an image or art. Treat it as such.
With that in mind, there’s 2 options:
You are either exceeding the scale value to where each vertex is vertically far enough apart that everything looks blocky (values above 65,535 z can do that).
Or your image is not really a PNG16 - remeber that just because something claims to save a file as a png16 this does not mean the file data hasnt:
A) already been compromised.
B) actually use 16bit data to write with.
For example, if you are using photoshop, you will never be able to get it to work, since it writes as 15+1 bit and not as pure 16bit.
But go back to the initial point.
You are working with Data, not a graphic, you probaly shouldn’t be using a graphic interface anyway.
Worse case scenario, use something that natively supports 16bit - Krita or Gimp both should.
Or work with appropriate GIS programs…
On that note, blur isnt going to do much but completely destroy your heightmap data.
You probably want very limited slope based blur applied to the map to solve terracing.
Theres 6000 pages long books on that particular subject alone…
Example: Contour lines to DEM - GRASS-Wiki
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Thank you for your kind reply.
Like other people, I am trying to get renders from this site and create a landscape.
Tangram Heightmapper
Unlike the YouTube video I saw,
the banding in the original image seems to have gotten worse.
In the video, it was okay to only add 1.5 Gaussian Blur,
but now I have to add more than 10.
That’s how much detail disappears.
My guess is that the way images are formed in tangrams has changed.
Or maybe I wasn’t good at rendering the image.
My days are disappearing like this.
Use a different source.
You can often pay for 1m DTM by talking to the region office out in european countries.
In the us its only around 20m precision but freely avaliable from USGS.
If its still around you have variable precision on terrainparty.net