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Home / Proceedings / Proceedings of the AAAI Conference on Artificial Intelligence, 35 / No. 2: AAAI-21 Technical Tracks 2

Learning Complex 3D Human Self-Contact

February 1, 2023

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Authors

Mihai Fieraru

Institute of Mathematics of the Romanian Academy


Mihai Zanfir

Institute of Mathematics of the Romanian Academy


Elisabeta Oneata

Institute of Mathematics of the Romanian Academy


Alin-Ionut Popa

Institute of Mathematics of the Romanian Academy


Vlad Olaru

Institute of Mathematics of the Romanian Academy


Cristian Sminchisescu

Lund University Institute of Mathematics of the Romanian Academy


DOI:

10.1609/aaai.v35i2.16223


Abstract:

Monocular estimation of three dimensional human self-contact is fundamental for detailed scene analysis including body language understanding and behaviour modeling. Existing 3d reconstruction methods do not focus on body regions in self-contact and consequently recover configurations that are either far from each other or self-intersecting, when they should just touch. This leads to perceptually incorrect estimates and limits impact in those very fine-grained analysis domains where detailed 3d models are expected to play an important role. To address such challenges we detect self-contact and design 3d losses to explicitly enforce it. Specifically, we develop a model for Self-Contact Prediction (SCP), that estimates the body surface signature of self-contact, leveraging the localization of self-contact in the image, during both training and inference. We collect two large datasets to support learning and evaluation: (1) HumanSC3D, an accurate 3d motion capture repository containing 1,032 sequences with 5,058 contact events and 1,246,487 ground truth 3d poses synchronized with images collected from multiple views, and (2) FlickrSC3D, a repository of 3,969 images, containing 25,297 surface-to-surface correspondences with annotated image spatial support. We also illustrate how more expressive 3d reconstructions can be recovered under self-contact signature constraints and present monocular detection of face-touch as one of the multiple applications made possible by more accurate self-contact models.

Topics: AAAI

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HOW TO CITE:

Mihai Fieraru||Mihai Zanfir||Elisabeta Oneata||Alin-Ionut Popa||Vlad Olaru||Cristian Sminchisescu Learning Complex 3D Human Self-Contact Proceedings of the AAAI Conference on Artificial Intelligence (2021) 1343-1351.

Mihai Fieraru||Mihai Zanfir||Elisabeta Oneata||Alin-Ionut Popa||Vlad Olaru||Cristian Sminchisescu Learning Complex 3D Human Self-Contact AAAI 2021, 1343-1351.

Mihai Fieraru||Mihai Zanfir||Elisabeta Oneata||Alin-Ionut Popa||Vlad Olaru||Cristian Sminchisescu (2021). Learning Complex 3D Human Self-Contact. Proceedings of the AAAI Conference on Artificial Intelligence, 1343-1351.

Mihai Fieraru||Mihai Zanfir||Elisabeta Oneata||Alin-Ionut Popa||Vlad Olaru||Cristian Sminchisescu. Learning Complex 3D Human Self-Contact. Proceedings of the AAAI Conference on Artificial Intelligence 2021 p.1343-1351.

Mihai Fieraru||Mihai Zanfir||Elisabeta Oneata||Alin-Ionut Popa||Vlad Olaru||Cristian Sminchisescu. 2021. Learning Complex 3D Human Self-Contact. "Proceedings of the AAAI Conference on Artificial Intelligence". 1343-1351.

Mihai Fieraru||Mihai Zanfir||Elisabeta Oneata||Alin-Ionut Popa||Vlad Olaru||Cristian Sminchisescu. (2021) "Learning Complex 3D Human Self-Contact", Proceedings of the AAAI Conference on Artificial Intelligence, p.1343-1351

Mihai Fieraru||Mihai Zanfir||Elisabeta Oneata||Alin-Ionut Popa||Vlad Olaru||Cristian Sminchisescu, "Learning Complex 3D Human Self-Contact", AAAI, p.1343-1351, 2021.

Mihai Fieraru||Mihai Zanfir||Elisabeta Oneata||Alin-Ionut Popa||Vlad Olaru||Cristian Sminchisescu. "Learning Complex 3D Human Self-Contact". Proceedings of the AAAI Conference on Artificial Intelligence, 2021, p.1343-1351.

Mihai Fieraru||Mihai Zanfir||Elisabeta Oneata||Alin-Ionut Popa||Vlad Olaru||Cristian Sminchisescu. "Learning Complex 3D Human Self-Contact". Proceedings of the AAAI Conference on Artificial Intelligence, (2021): 1343-1351.

Mihai Fieraru||Mihai Zanfir||Elisabeta Oneata||Alin-Ionut Popa||Vlad Olaru||Cristian Sminchisescu. Learning Complex 3D Human Self-Contact. AAAI[Internet]. 2021[cited 2023]; 1343-1351.


ISSN: 2374-3468


Published by AAAI Press, Palo Alto, California USA
Copyright 2022, Association for the Advancement of
Artificial Intelligence 1900 Embarcadero Road, Suite
101, Palo Alto, California 94303 All Rights Reserved

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