@inproceedings{8c158253d0b241a99ef6b36176220838,
title = "Distributed Solution of the Blendshape Rig Inversion Problem",
abstract = "The problem of rig inversion is central in facial animation, but with the increasing complexity of modern blendshape models, execution times increase beyond practically feasible solutions. A possible approach towards a faster solution is clustering, which exploits the spacial nature of the face, leading to a distributed method. In this paper, we go a step further, involving cluster coupling to get more confident estimates of the overlapping components. Our algorithm applies the Alternating Direction Method of Multipliers, sharing the overlapping weights between the subproblems and show a clear advantage over the naive clustered approach. The method applies to an arbitrary clustering of the face. We also introduce a novel method for choosing the number of clusters in a data-free manner, resulting in a sparse clustering graph without losing essential information. Finally, we give a new variant of a data-free clustering algorithm that produces good scores with respect to the mentioned strategy for choosing the optimal clustering.",
keywords = "blendshape animation, face segmentation, inverse rig problem",
author = "Stevo Rackovi{\'c} and Cl{\'a}udia Soares and Du{\v s}an Jakoveti{\'c}",
note = "Funding Information: info:eu-repo/grantAgreement/EC/H2020/812912/EU# info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04516%2F2020/PT# info:eu-repo/grantAgreement/FCT/Concurso de Projetos de Investiga{\c c}{\~a}o Cient{\'i}fica e Desenvolvimento Tecnol{\'o}gico em Ci{\^e}ncia dos dados e intelig{\^e}ncia artificial na Administra{\c c}{\~a}o P{\'u}blica - 2018/DSAIPA%2FAI%2F0087%2F2018/PT# Ministry of Education of the Republic of Serbia (451-03-9/2021-14/200125). Publisher Copyright: {\textcopyright} 2023 Owner/Author.; 2023 SIGGRAPH Asia 2023 Technical Communications, SA Technical Communications 2023 ; Conference date: 12-12-2023 Through 15-12-2023",
year = "2023",
month = nov,
day = "28",
doi = "10.1145/3610543.3626166",
language = "English",
isbn = "979-8-4007-0314-0",
series = "SIGGRAPH-ASIA: Computer Graphics and Interactive Techniques-Asia",
publisher = "ACM - Association for Computing Machinery",
editor = "Spencer, {Stephen N.}",
booktitle = "SA '23",
address = "United States",
}