★ Converting texture data to voxels in Blender ★
Knowuh's twitch: Aug 24 2014
It all started when I wanted to grab some colors from Vincent Van Gogh for use in one of my renders.
I figured it should be possible to convert pixels into voxels, and using Blender's Python API, it was pretty easy. This technique might have general appeal, so I created a video tutorial for it.
The python script reads pixels RGB values from an texture image you specify by name. It then creates a new diffuse shader material of the same color for each pixel (wasteful!), and final it creates a rectangular prism at x,y coordinates, whose hight is determined by the pixels intesity.
You can read the script on github (or fork it, or comment on it).
Here are a some renders I made using this script:
Here is the tutorial.
It covers some basic info about getting started scripting python, as well as the details of how to read pixel data from a texture, and how to then create voxels from that data.
And as promised here are the videotorial links:
- Blender Python API documentation.
- The ".blend" file used in the tutorial.
- The Python script used in the tutorial.
All Comments, revisions, suggestions welcome. Post in the comments section, or poke me on twitter or G+.
I might do a follow up video about framing, focus, and camera rigging if people are interested.