Hello everyone,
I´m begginer in photoscaning and I get a stuck on the point of creating a UV and retopology of model. Could you please give me any advice if my workflow is right and how can I make my work perfect and the fastest?
My workflow:
- creating model in RC
- export high poly model (around 40M poly)
- export low poly model (500K poly) - which I move to Zbrush for cleaning and decimate/ zremesh on model around 10K poly
model with 10K poly import in 3dsMax for creating UV and retopology than export it to RC for re-texture
in Xnormal load high poly model(40M) and low poly model (10K) for baking maps (creating normals, displace map)
Is this correct?
By this way I can get a model, but with blurry places on diffuse map. How can I get a perfect sharp diffuse map? (for example through the baking?)
And next and more important problem is - Is here any option how to do good and perfect fitting UV and retopology than manually? Is necessary to do retopology? I think I will go mad from doing this at more complicated scans like a tree branches, pile of stones or bigger crack in stone wall. UV master in zbrush doesn´t work everytime so perfect and also relaxing in 3ds max have a sometimes problem with it and a quality is for me and this project really important. I think I will need to do retopology but I don´t know if I could do it too perfect (and also the fast) by manually than any script. Is for example UV layout solution for it?
How do you solve this problems?
do you have any specific problem with RC in this workflow?
Because to me it sounds more like a general question outside of RC and I could imagine that you will get more (and probably also better) answers in a different forum that is more related to your problem. E.g. I can’t help you at all because I don’t do any retopology and all that…
Hello,
thank you for your fast reaction;).
Yes I agree. I don´t have any specific problem with RC. I just thought that here in this big community of people who are interested by photogrammetry I can find someone who will help me with this or give me any other tip or solution (workflow) how to get a perfect model out of reality and take it more under control…
No, my alignment is great and I´m fully satisfied with model. I just have to work with those models in 3Dsmax, so I need low poly model, but I lose too much quality with decimation. Thats why I need perfect maps like a normals, diffuse and displace and I also need maps in bigger pieces not like on thousands pieces like a RC do:).
I post a few picture, with
Highpoly mesh
30M high poly mesh
low poly mesh with projected diffuse texture (the texture is blurry here)
and diffuse map (there is also visible blurry texture)
I firstly made a 500K poly model from 160Mtris by simplify tool in RC then I took this model to Zbrush and use Dynamesh and Zremesher (decimation to 10K poly). This low poly model was imported back to the RC and texture was reproject there. (UV was created in 3dsmax)
Hmm. Did you create a new unwrap in the procedure? Could it be that your texture size is too small?
The only other thing I can imagine is that with the super low poly model, the geometry on the recesses (where it is especially blurry) is too different from the original which would throw RC off when (re)projecting the texture…
Yes I tried make a new Unwrap and then reTexture but it looks similar. But generally I can´t do new Unwrap, because I need my personal UV for next editing in PS.
Maybe I have any misunderstanding with reTextuing. So I tried work differently.
test:
I just imported Low poly model and directly go to button Texture. (photos more up shows the result)
settings - fixed texel size
select info panel says:
texture quality 100%
texture utilitization: 24%
test:
I imported model. Set texturing on maximal texture count. (texture count 8, resolution 16K) - selected all pictures
result = blurry texture
select info panel says:
texture quality 100%
texture utilitization: 24%
test:
imported model +Set texturing on maximal texture count. (texture count 16, resolution 16K) - selected all pictures
result = blurry texture
select info panel says:
texture quality 100%
texture utilitization: 24%
test:
imported model +Set texturing on maximal texture count. (texture count 8, resolution 16K) - selected just few photos with best look texture from the closest distance with most cover of format.
result = better not to blurry texture, but any details of textures are missing. And corners of object are blurry
select info panel says:
texture quality 100%
texture utilitization: 24%
all pictures are sharp, shoot on canon EOS mark II or mark IV and too raw (then converted to tiff
should I have a choose only pictures with texture?
the texture quality only says how close your texel size is to RCs estimation of the optimal value - doesn’t say how “good” it is. Utilization is simply how much of the texture file is used for the unwrap. It’s weird though that you get the same result each and every time with different settings. I don’t play around with those too much myself since it always seems to work out for ma.
Have you tried chris’ suggestion and raised the Large Triangle Removal value? It needs to be really high - it simply tells RC when to stop texturing large triangles (x times the average size I believe). So it can’t really hurt anything apart from calculation time a bit.
