Does a tool something like this exist in CG

General Forums Blender and CG Discussions
1

I’ve been wondering, suppose you start with a high resolution makehuman character.
Then retopo it yourself to some lower resolution matching on average that first model.

Then

  • have a tool analyse both meshes and create a difference bump map
  • so that the low poly gets an improved high poly look *

I’m wondering if something like that exist

2

Did you mean normal baking?

3

Bake a normal or displacement map http://wiki.blender.org/index.php/Doc:2.6/Manual/Render/Bake

Tutorial http://blenderdiplom.com/en/tutorials/all-tutorials/585-normal-baking-using-the-blender-internal-renderer.html

4

Is bump baking the same ??

I think he means it like to have the multires modifier, create a bump map for the lower version of the shape, so once generated multires can be removed, and just the new bump map can be applied.

5

Richard’s link basically describes that exact thing and how to do it. This is a very common task.

6

This is a process use to detail characters/environments in video games (other media too, but it’s vital in video games)

Normal_map_example.png963×543 228 KB