A basic, practical photogrammetry workflow

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In this 46 minute tutorial I will be covering my current approach to making photo-scanned CG assets. For the purposes of the lesson I'll focus on scanning the tree shown in the image above. We will cover the following steps:

1. Shooting the photographs appropriate for use in photo-scanning

2. Processing those photographs in Adobe Lightroom

3. Generating our scanned 3D model in Agisoft Photoscan

4. Cleaning, retopologising and unwrapping the mesh in ZBrush

5. Re-projecting the photo-scanned texture onto the unwrapped retopologised mesh in photoscan

6. Correcting and adjusting the textures in Photoshop and Substance Painter

7. Final adjustments to the 3D model in 3DS Max

The software packages I have used in this process are as follows: Adobe Lightroom, Agisoft Photoscan, ZBrush, 3DS Max, Adobe Photoshop, Substance Painter & XNormal.

While it is not absolutely essential to use all of the software packages listed above in this process, it will be difficult to complete the tutorial without Agisoft Photoscan and another standard 3D modelling package like 3DS Max, Maya or similar. I would also strongly recommend ZBrush for this process. A basic understanding of these packages is also recommended for this tutorial although the steps should be reasonably easy to follow.

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