A Statistical Model of Human Pose and Body Shape

• Published in: Computer graphics forum 2009-04, Vol.28 (2), p.337-346
• Main Authors: Hasler, N., Stoll, C., Sunkel, M., Rosenhahn, B., Seidel, H.-P.
• Format: Article
• Language: English
• Subjects: Animation; Computer animation; Computer based modeling; Computer Graphics [I.3.5]: Computational Geometry and Object Modeling; Computer Graphics [I.3.7]: Three-Dimensional Graphics and Realism; Human body; Motion control; Special effects; Studies
• ISSN: 0167-7055; 1467-8659
• DOI: 10.1111/j.1467-8659.2009.01373.x

Generation and animation of realistic humans is an essential part of many projects in today's media industry. Especially, the games and special effects industry heavily depend on realistic human animation. In this work a unified model that describes both, human pose and body shape is introduced which allows us to accurately model muscle deformations not only as a function of pose but also dependent on the physique of the subject. Coupled with the model's ability to generate arbitrary human body shapes, it severely simplifies the generation of highly realistic character animations. A learning based approach is trained on approximately 550 full body 3D laser scans taken of 114 subjects. Scan registration is performed using a non‐rigid deformation technique. Then, a rotation invariant encoding of the acquired exemplars permits the computation of a statistical model that simultaneously encodes pose and body shape. Finally, morphing or generating meshes according to several constraints simultaneously can be achieved by training semantically meaningful regressors.