Hobby mihai.s

Preparing a high dense 3D scan (photogrammetry, LiDAR) model for SketchUp

Transform a high-resolution photogrammetry terrain and stone ruins model scan into a low-poly, editable model. A simple and quick method on how to cleanup, repair holes, retopologize a complex model and bake the model and paint textures to transfer high-res info from the photogrammetry model to the low-poly one using Blender.

  • Removal of noise shells, spikes, intersect faces and repair holes in the model using the trio of extensions from SineWave;
  • Retopologizing the high poly model using J-Remesh;
  • Unwrap Low-Poly Model;
  • Setting up a Shader (Texture);
  • Baking the Diffuse Texture (and others, like Bump, etc.) using SimpleBake;
  • Auto generated low poly mesh with baked texture;
  • Cleanup: Painting/Repairing ‘Gap’ or Holes in the Texture;
  • Exporting the low poly model as a DAE file for SketchUp;
  • Importing into SketchUp the low-poly model, that is much simpler and easier to edit and use, that looks almost the same as the high-resolution model.





6 Likes

Starting from this post about ‘creating a landscape’

Creating a terrain using a point clouds in SketchUp, starting from a photo (2D plan) with a few numbers.
Extensions:

  • Point Tool;
  • Tape Measure Tool;
  • Fredo TopoShaper.

Startig from this post about ‘piles of rubble and materials’

Creating piles of objects (physics) in Blender, imported in SketchUp

1 Like

Modeling an organic shape for a swimming pool (SUbD)

Starting from a post about a ‘crate

Modeling a Euro Crate in SketchUp (Web, Make, Pro)

4 Likes

Starting from a post about a ‘rebar

Modeling a rebar (SketchUp and LayOut ready, low poly)

4 Likes

Starting from this post about ‘draped fabric’.

Modeling a draped fabric, using Fredo Spline and Clothworks extensions

3 Likes

Starting from a post about ‘modeling a stone wall

  • turn perspective into a front view in Affinity Photo (or Photoshop, GIMP, etc.)


  • draw over boxes in Blender (or in SketchUp). UV unwrap and UV map those boxes/stones, using the original photo or another texture;


  • adding details to the stones in Blender, using an extension (Wear N Tear, OCL, etc.)

  • exporting as DAE and importing into SketchUp (as a low poly model with PBR material)


2 Likes

Starting from this post about ‘cleaning up an imported model

One method of Fixing/cleaning up random diagonals and reversed faces for ‘3ds Max to SketchUp’, via Blender

Starting from this post about a ‘text and drape

Using Intersect Faces

1 Like