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Help on 3D Color Scan processing for 3D Print

ZBrush Usage Questions
#1

I am new to ZB and using 4R6, I have a 3D color scanned model, initially has 50k points. Which I will have to do some modification. ie: Hollow for 3D print. It has a mtl and a jpg texture file itself.

My procedure is

  1. Apply the texture map
  2. Increase the points to around 600k and do “Polypaint from texture”
  3. Use dynamesh to hollow the model and close some holes

My problem is the model will remain at around 600k points. I will have to unwrap it using uv master to recreate a texture for 3D printing, but unwraping will work only if the model itself is 80k points or below (maybe is the limitation of my computer processing power), I have tried to Dynamesh the model down to around 80k points, but the polypaint blured too much that it becomes unusable as a texture.

My goal it to have a model around 50k and with a nice texture map as it orginial. What could be a possible solution for that? Or the correct way to do it?

Thank in advance for any advice

#2

Copy your model.
Retopo it manually and/or with Zremesher.
Unwrap UVs on the low poly model.
Subdivide to get multiple subdivision levels and high poly count (usually over 1mil or more)
Use project all to project the original detail and color onto the high poly count.
Polypaint to texture.

The low poly model should be easy to unwrap UV map and its high poly subdivision level should retain the original color info. Then when you polypaint to texture it should transfer the high poly info to the UV map.

#3

Thanks, I will definitely try that.