AUTHOR=Komaritzan Martin , Wenninger Stephan , Botsch Mario TITLE=Inside Humans: Creating a Simple Layered Anatomical Model from Human Surface Scans JOURNAL=Frontiers in Virtual Reality VOLUME=2 YEAR=2021 URL=https://www.frontiersin.org/journals/virtual-reality/articles/10.3389/frvir.2021.694244 DOI=10.3389/frvir.2021.694244 ISSN=2673-4192 ABSTRACT=

3D morphable models are widely used to describe the variation of human body shapes. However, these models typically focus on the surface of the human body, since the acquisition of the volumetric interior would require prohibitive medical imaging. In this paper we present a novel approach for creating a volumetric body template and for fitting this template to the surface scan of a person in a just a few seconds. The body model is composed of three surface layers for bones, muscles, and skin, which enclose the volumetric muscle and fat tissue in between them. Our approach includes a data-driven method for estimating the amount of muscle mass and fat mass from a surface scan, which provides more accurate fits to the variety of human body shapes compared to previous approaches. We also show how to efficiently embed fine-scale anatomical details, such as high resolution skeleton and muscle models, into the layered fit of a person. Our model can be used for physical simulation, statistical analysis, and anatomical visualization in computer animation and medical applications, which we demonstrate on several examples.