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Synthesizing physically realistic human motion in low-dimensional, behavior-specific spaces

Alla Safonova, Jessica K. Hodgins, Nancy S. Pollard
2004 ACM SIGGRAPH 2004 Papers on - SIGGRAPH '04  
The difficulty of solving this problem for complex characters such as humans is due in part to the high dimensionality of the search space.  ...  Our method utilizes an existing motion capture database to find a low-dimensional space that captures the properties of the desired behavior.  ...  Acknowledgments We thank Moshe Mahler for his help in modeling and rendering. The authors were supported in part by NSF IIS-0196089, NSF EIA-0196217, NSF IIS-0205224, and NSF ECS-0325383.  ... 
doi:10.1145/1186562.1015754 fatcat:yy5jyth35jeufoijg4ntdoeq7a

Synthesizing physically realistic human motion in low-dimensional, behavior-specific spaces

Alla Safonova, Jessica K. Hodgins, Nancy S. Pollard
2004 ACM Transactions on Graphics  
The difficulty of solving this problem for complex characters such as humans is due in part to the high dimensionality of the search space.  ...  Our method utilizes an existing motion capture database to find a low-dimensional space that captures the properties of the desired behavior.  ...  Acknowledgments We thank Moshe Mahler for his help in modeling and rendering. The authors were supported in part by NSF IIS-0196089, NSF EIA-0196217, NSF IIS-0205224, and NSF ECS-0325383.  ... 
doi:10.1145/1015706.1015754 fatcat:5q4kocep5resndkzabbococnny

Robust task-based control policies for physics-based characters

Stelian Coros, Philippe Beaudoin, Michiel van de Panne
2009 ACM SIGGRAPH Asia 2009 papers on - SIGGRAPH Asia '09  
Abstract We present a method for precomputing robust task-based control policies for physically simulated characters.  ...  a) Go-to-line (b) Heading (c) Go-to-point (d) Point-with-heading (e) Heading-and-speed (f) Very Robust Walk Figure 1 : We precompute task-specific control policies for real-time physics-based characters  ...  Dimensionality: A core challenge in applying reinforcement learning techniques to physics-based characters is the high-dimensional nature of the value function, which needs to span the cross-product of  ... 
doi:10.1145/1661412.1618516 fatcat:7tbiatpfmfdtpjraxcikexe6i4

Robust task-based control policies for physics-based characters

Stelian Coros, Philippe Beaudoin, Michiel van de Panne
2009 ACM Transactions on Graphics  
Abstract We present a method for precomputing robust task-based control policies for physically simulated characters.  ...  a) Go-to-line (b) Heading (c) Go-to-point (d) Point-with-heading (e) Heading-and-speed (f) Very Robust Walk Figure 1 : We precompute task-specific control policies for real-time physics-based characters  ...  Dimensionality: A core challenge in applying reinforcement learning techniques to physics-based characters is the high-dimensional nature of the value function, which needs to span the cross-product of  ... 
doi:10.1145/1618452.1618516 fatcat:hmqdlyfyjzhhrhvdpoxoah6ypu

Interactive Character Animation using Simulated Physics [article]

Thomas Geijtenbeek, Nicolas Pronost, Arjan Egges, Mark H. Overmars
2011 Eurographics State of the Art Reports  
However, in recent years, research on interactive character animation using simulated physics has resulted in tremendous improvements in controllability, robustness, visual quality and usability.  ...  In this review, we present a structured evaluation of relevant aspects, approaches and techniques regarding interactive character animation using simulated physics, based on over two decades of research  ...  Other forms of preview control use a low-dimensional character model to enable on-line look-ahead optimization. Mordatch et al.  ... 
doi:10.2312/eg2011/stars/127-149 fatcat:vyaebgmgxjfcnaf7s5oesy6z4e

Natural User Interface for Physics-Based Character Animation [chapter]

C. Karen Liu, Victor B. Zordan
2011 Lecture Notes in Computer Science  
In this paper, we introduce unified framework for combining natural user interface and physics-based character animation.  ...  We also propose a human-in-the-loop control paradigm which allows a player or performer to sense and act for the character.  ...  of the current user's poseq to the example motion, we project the feature vectorŵ composed fromq to the low dimensional space via A T k , and back project into the high-dimensional space using A k : w  ... 
doi:10.1007/978-3-642-25090-3_1 fatcat:qvvgkrzd35ck7osmxv56wme26i

Continuous character control with low-dimensional embeddings

Sergey Levine, Jack M. Wang, Alexis Haraux, Zoran Popović, Vladlen Koltun
2012 ACM Transactions on Graphics  
The method uses a low-dimensional space learned from the example motions to continuously control the character's pose to accomplish the desired task.  ...  By controlling the character through a reduced space, our method can discover new transitions, tractably precompute a control policy, and avoid low quality poses.  ...  This work was conducted in conjunction with the Intel Science and Technology Center for Visual Computing and supported by NSF grant IIS-1017938.  ... 
doi:10.1145/2185520.2335379 fatcat:wdbjrcgyfjaljp6gsyw4so7wfq

Continuous character control with low-dimensional embeddings

Sergey Levine, Jack M. Wang, Alexis Haraux, Zoran Popović, Vladlen Koltun
2012 ACM Transactions on Graphics  
The method uses a low-dimensional space learned from the example motions to continuously control the character's pose to accomplish the desired task.  ...  By controlling the character through a reduced space, our method can discover new transitions, tractably precompute a control policy, and avoid low quality poses.  ...  This work was conducted in conjunction with the Intel Science and Technology Center for Visual Computing and supported by NSF grant IIS-1017938.  ... 
doi:10.1145/2185520.2185524 fatcat:p4372cryvrhrhl7paba3yyvkky

Synthesis of constrained walking skills

Stelian Coros, Philippe Beaudoin, Kang Kang Yin, Michiel van de Pann
2008 ACM SIGGRAPH Asia 2008 papers on - SIGGRAPH Asia '08  
(c) A 3D physics-based character simulation plans steps to avoid stepping in crevasses. (d) A challenging terrain being navigated by the 3D model.  ...  We demonstrate real-time navigation across constrained terrain for physics-based simulations of 2D and 3D characters.  ...  We now describe in more detail how each aspect of the SSDM is defined. Low-dimensional state space: The state s is 18-dimensional for planar characters and much higher for the 3D human model.  ... 
doi:10.1145/1457515.1409066 fatcat:vbjnm5dfbzhorg7pk3vnjzcvha

Synthesis of constrained walking skills

Stelian Coros, Philippe Beaudoin, Kang Kang Yin, Michiel van de Pann
2008 ACM Transactions on Graphics  
(c) A 3D physics-based character simulation plans steps to avoid stepping in crevasses. (d) A challenging terrain being navigated by the 3D model.  ...  We demonstrate real-time navigation across constrained terrain for physics-based simulations of 2D and 3D characters.  ...  We now describe in more detail how each aspect of the SSDM is defined. Low-dimensional state space: The state s is 18-dimensional for planar characters and much higher for the 3D human model.  ... 
doi:10.1145/1409060.1409066 fatcat:it5246oxbrasni4ekst75diyrq

Constraint-based motion optimization using a statistical dynamic model

Jinxiang Chai, Jessica K. Hodgins
2007 ACM SIGGRAPH 2007 papers on - SIGGRAPH '07  
Solving this problem in the low-dimensional space yields optimal natural motion that achieves the goals specified by the user.  ...  In this paper, we present a technique for generating animation from a variety of user-defined constraints.  ...  Acknowledgements The authors would like to thank Moshe Mahler for his help in modeling and rendering the images for this paper and Autodesk for the donation of Maya software.  ... 
doi:10.1145/1275808.1276387 fatcat:76wfs2cn4ve3za522ou6dfql5i

Constraint-based motion optimization using a statistical dynamic model

Jinxiang Chai, Jessica K. Hodgins
2007 ACM Transactions on Graphics  
Solving this problem in the low-dimensional space yields optimal natural motion that achieves the goals specified by the user.  ...  In this paper, we present a technique for generating animation from a variety of user-defined constraints.  ...  Acknowledgements The authors would like to thank Moshe Mahler for his help in modeling and rendering the images for this paper and Autodesk for the donation of Maya software.  ... 
doi:10.1145/1239451.1239459 fatcat:a4nr4nn73bbq7dyorvm32sfjwe

Physics-aware registration based auto-encoder for convection dominated PDEs [article]

Rambod Mojgani, Maciej Balajewicz
2020 arXiv   pre-print
mapping from the latent space to the high-dimensional physical space.  ...  We design a physics-aware auto-encoder to specifically reduce the dimensionality of solutions arising from convection-dominated nonlinear physical systems.  ...  , in both space and time, are down-sampled to 15 control points.  ... 
arXiv:2006.15655v1 fatcat:bc5f2iybmfazhcjxc2gzopgpfi

Constraint-based motion optimization using a statistical dynamic model

Jinxiang Chai, Jessica K. Hodgins
2007 ACM Transactions on Graphics  
Solving this problem in the low-dimensional space yields optimal natural motion that achieves the goals specified by the user.  ...  In this paper, we present a technique for generating animation from a variety of user-defined constraints.  ...  Acknowledgements The authors would like to thank Moshe Mahler for his help in modeling and rendering the images for this paper and Autodesk for the donation of Maya software.  ... 
doi:10.1145/1276377.1276387 fatcat:nkjkslilrvaoblww5vd345guti

Performance-based control interface for character animation

Satoru Ishigaki, Timothy White, Victor B. Zordan, C. Karen Liu
2009 ACM Transactions on Graphics  
Figure 1: Our system allows the user to directly control a virtual character in a wide array of situations.  ...  The result is a flexible interface through which a user can make freeform control choices while the resulting character motion maintains both physical realism and the user's personal style.  ...  These scaling factors balance the influence of each component in the low-dimensional space.  ... 
doi:10.1145/1531326.1531367 fatcat:kaiuzpash5gqlduavpgfpihixy
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