Computational Bodybuilding: Anatomically-based Modeling of Human Bodies

摘要

We propose a method to create a wide range of human body shapesrnfrom a single input 3D anatomy template. Our approach is inspiredrnby biological processes responsible for human body growth. In particular,rnwe simulate growth of skeletal muscles and subcutaneousrnfat using physics-based models which combine growth and elasticity.rnTogether with a tool to edit proportions of the bones, ourrnmethod allows us to achieve a desired shape of the human body byrndirectly controlling hypertrophy (or atrophy) of every muscle andrnenlargement of fat tissues. We achieve near-interactive run times byrnutilizing a special quasi-statics solver (Projective Dynamics) and byrncrafting a volumetric discretization which results in accurate deformationsrnwithout an excessive number of degrees of freedom. Ourrnsystem is intuitive to use and the resulting human body models arernready for simulation using existing physics-based animation methods,rnbecause we deform not only the surface, but also the entirernvolumetric model.