What is the difference between a RAW scan and a Cleaned scan?

Once the photography session is complete all the images are computated and the result is RAW scan asset. That is the first 3D model that is created from the calculation of all photos. This RAW scan usually runs into the tens of millions of polygons and could have some problems, especially around areas with hair. However, when we present our RAW scans here, they have gone through some basic optimization and fix of the geometry. Usually they are exported at 2 milion polygons each. 

The Cleaned scan ( or retopologized ) as we call it has a totaly different geometry in quads that is now in the thousands of polygons, not millions. It is also gone through a cleanup of all problem areas. This makes this product a lot easier to use and better looking.

What is the difference between a cleaned scan and a PBR model?

The PBR stands for physically based rendering. The textures and materials are prepared in such a way that the model is compatible with a wide range of different 3D softwares and engines with no difference in the way the product looks. In addition the geometry of the PBR model is created in such a way that the asset is suitable for rigging and animation. Further still the PBR 3D model is carefully cleaned and from the problem scan data around the hair and the cap that the actors are photographed in. The detail on the head is then recreated in those areas. Additional maps like glossiness, specular, normal and displace are created and a special SSS material is applied to the asset. All of that results in a very high-end product that you can instantly use.

What is the difference between a cleaned scan and an animation-ready scan? 

The animation-ready asset has a rig in place and the topology is created in such a way that when moving the elements of the model around during animation there are no stretchings or geometry issues.