I’ve been experimenting with more photogrammetry tools and techniques. This time recreating 3D human heads using a Blender add-on called FaceBuilder which is developed by KeenTools. Using FaceBuilder is pretty straightforward:
- you take 7 photos of the head you’d like to recreate at various angles,
- import those photos into Blender using FaceBuilder,
- align the FaceBuilder mesh to the 7 photos using their pinning system,
- bake the photos into a texture used by the generated head mesh, and
- clean up the baked texture by doing a bit of clone tool work over anything that may look off.
I’ve found that taking photos on a bright, overcast day gets the best results as well as trying to capture the 7 key photos as quickly as possible (before your subject shifts around too much) and well as detail shots around the head to be used to texture paint in anything that may look off when the textures are baked.
This guide that the KeenTools folks wrote helps to breakdown the process and a high level of what their add-on is actually doing.