Blender Secrets - Reconstruct lower subdivisions from a 3D scan

Показать описание

This is a very detailed 3D scan, and the topology consists of many tiny triangles. This is not convenient if we want to UV unwrap the mesh, or rig it for animation. Ideally, we'd have a very low poly base mesh with a Multires modifier that contains all the higher levels of subdivision. But how do you recreate those from a 3D scan? This video explains.

#b3d #blender #secrets #tutorial

Рекомендации по теме

Комментарии

Nice tip - I find that the following workflow also useful if a bit more lengthy
1) apply decimate modifier to copy of hi res model and reduce the polygon count to as low as possible while maintaining a reasonably good low poly version of your model.
2) apply the decimate.
3) In edit mode - apply ALT J + increase angle to 180 to get rid of max no. of tris as possible.
4) in Sculpt mode use the smooth/ flatten/ brushes to remove any tangled polygons on the decimated mesh (using the simplify brush in dynotop mode can also help to reduce poly count nicely)
5) In edit mode again Apply Alt J again.
6) Now apply a weld modifier (to insure all surface vertices are connected.
7) export this remesh as obj and import into instant meshes.
8) Export retopified low poly quad mesh from instant meshes and import back to blender
9) unwrap this model
10 Bake normals from original hi poly model to the instant meshes obj.

I find this results in a very clean low poly model and takes the normal maps excellently. I hope some user find this process useful too

digitalartworm

This is a very detailed 3D scan, and the topology consists of many tiny triangles. This is not convenient if we want to UV unwrap the mesh, or rig it for animation. Ideally, we'd have a very low poly base mesh with a Multires modifier that contains all the higher levels of subdivision. But how do you recreate those from a 3D scan? This video explains.

BlenderSecrets

That's awesome, I'm not a sculptor but I imagine a lot of people could use this tip for faster sculpt retopology instead of doing it manually or using 3rd party software.

Peterll

This must be added to a category: "awesome tips". Simple and amazing. thanks!!!

carlosedubarreto

In two days of searching that kind of tips you are the only one who said what to do with our modifiers, if we can delete them or not, thanks for doing things till the end mate <3 +1 Sub ;)

awayfromhome

When this was uploaded I was a beginner and couldn't understand anything, now I am here again after searching it, this growth feels good
Great work

gqij

I have to say, this is some pretty slick work. I don't see many tuts out there touching on remesh, shrinkwrap, or multires. Keep this coming!

chadconley

Ya this is like a 'lazy retopology' dx, BTW: If you remesh in Quad Mode, maybe u have a mesh split in half, so try to remove 1 of them, then apply a mirror and connect the meshes using Clipping and Merge in the modifier

McPatoo

I never though about using the multires modifier, this'll make switching between different subdivisions really easy!

bluetongue

Sounds like nice trick for retopology.

PetrSmrtka

I think we all have tried something like that in the past.
Very interesting process.

pile

You just saved the day. I was looking for a way to remesh my ground sculpts because my vertex density is never uniform when distributing points on meshes with geo node.

samiuelee

Yes, I love new multires modifier too )) it is necessary mod

PoMkAc

I practiced it into my shoes model and it worked! Thanks a lot

Tooncomtech

surely you cant use this for rigging like you claim though, it doesn't have any of the key edge loops for deformation. fine for a static mesh but idk about animation.

holdondino