Full photogrammetry workflow from scan to Unity

Almost more of a Twitch stream than a proper tutorial, here's a full run down of me creating my second ever photogrammetry model. Bit long winded but I'm really pleased with the result.

Covers everything from the initial scan in Meshroom to basic clean up in Meshlab, texture creation in Materialize and import and set-u pin Unity.

The final model is about 150k tris, which is fine for an offline render or video project but couldn't be considered game ready. Ideally you'd then go on to retopologise this high poly mesh to create something more around 5k, but using the textures to give the impression of the high poly asset.

0:00:00 Introduction and first scan of tree trunk
0:00:48 Meshroom
0:05:31 Import the result into Blender
0:08:08 Using MeshLab to clean up mesh
0:17:37 MeshLab clean up again, after crash
0:23:45 MeshLab mesh simplification (LOD0)
0:30:31 Exporting further meshed at lower resolution
0:39:47 Importing into Unity
0:45:21 Atlasing the textures using SimpleLOD
0:49:44 Using Materialize to create different texture maps
1:01:24 Adding the new maps to the material
1:02:03 Packing Metallic and Smoothness together into a single image file
1:04:25 Adding normal and other maps
1:18:39 Final results in Unity


Apps used:

MeshRoom: https://alicevision.github.io/#meshroom
MeshLab: http://www.meshlab.net/
Materialize: http://www.boundingboxsoftware.com/materialize/getkey.php


Assets used:

Simple LOD: https://assetstore.unity.com/packages/tools/modeling/simple-lod-25366?aid=1100lMeW

Texture Channel Packer: https://assetstore.unity.com/packages/tools/utilities/texture-channel-packer-61911?aid=1100lMeW

Nature Manufacture
- Meadow Environment: https://assetstore.unity.com/packages/3d/vegetation/meadow-environment-dynamic-nature-132195?aid=1100lMeW

NGSS2 Next Gen Soft Shadows (Screen Space Shadow solution): https://assetstore.unity.com/packages/vfx/shaders/next-gen-soft-shadows-137380?aid=1100lMeW


MeshLab tutorials:
Selection: https://www.youtube.com/watch?v=Bc3GdJ6Ddsc&list=PL8B1E816EAE236B4D&index=12
Decimation: https://www.youtube.com/watch?v=PWM6EGVVNQU



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