I am thinking to transform this LiDAR data into something 3-D, and to print it out with 3D printer.
The first issue I encountered is to make .laz into a clean mesh, usually .stl/.obj.
LiDAR point cloud visualization
Point cloud colored by elevation.
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I first experimented with computing normals and Poisson Surface Reconstruction in CompareCloud, and the result was miserable.
I then replaced Poisson Surface Reconstruction with Delaunay 2.5D, but the result stl file has file size around 1.5 GB, it’s way to heavy for any 3D print to be run
I then tried to use simply projection rastering, the model turned out better, but need de-noise
result is a bit better, but the trade off is the amount of detail lost.
Denoise process:
Eventually I found out that since the LiDAR file isn't meant for 3D model, but for pavement analyze, so the side profile of a building is lack of data, thus unable to construct a detailed, or at least clean 3D mesh. Thus I changed and went for https://map2model.com. Which gives me a simplified but clean, and I suppose more accurate model in seconds.
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4th ave, 61st/62nd st
dx = 4.0 # mm (X pitch) dy = 2.25 # mm (Y pitch)
⇒ whole screen: 36.0 mm (width) 76.5mm (height)
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Adafruit HUZZAH32 - ESP32 Feather
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