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SMPL: a skinned multi-person linear model
We present a learned model of human body shape and pose-dependent shape variation that is more accurate than previous models and is compatible with existing graphics pipelines. Our Skinned Multi-Person Linear model (SMPL) is a skinned vertex-based model that accurately represents a wide variety of b...
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Published in: | ACM transactions on graphics 2015-11, Vol.34 (6), p.1-16 |
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container_title | ACM transactions on graphics |
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creator | Loper, Matthew Mahmood, Naureen Romero, Javier Pons-Moll, Gerard Black, Michael J. |
description | We present a learned model of human body shape and pose-dependent shape variation that is more accurate than previous models and is compatible with existing graphics pipelines. Our Skinned Multi-Person Linear model (SMPL) is a skinned vertex-based model that accurately represents a wide variety of body shapes in natural human poses. The parameters of the model are learned from data including the rest pose template, blend weights, pose-dependent blend shapes, identity-dependent blend shapes, and a regressor from vertices to joint locations. Unlike previous models, the pose-dependent blend shapes are a linear function of the elements of the pose rotation matrices. This simple formulation enables training the entire model from a relatively large number of aligned 3D meshes of different people in different poses. We quantitatively evaluate variants of SMPL using linear or dual-quaternion blend skinning and show that both are more accurate than a Blend-SCAPE model trained on the same data. We also extend SMPL to realistically model dynamic soft-tissue deformations. Because it is based on blend skinning, SMPL is compatible with existing rendering engines and we make it available for research purposes. |
doi_str_mv | 10.1145/2816795.2818013 |
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ispartof | ACM transactions on graphics, 2015-11, Vol.34 (6), p.1-16 |
issn | 0730-0301 1557-7368 |
language | eng |
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source | Association for Computing Machinery:Jisc Collections:ACM OPEN Journals 2023-2025 (reading list) |
subjects | Blends Compatibility Human Mathematical models Pipelines Rendering Three dimensional models Transaction processing |
title | SMPL: a skinned multi-person linear model |
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