Human Motion Simulation
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Human Motion Simulation
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Author : Karim Abdel-Malek
language : en
Publisher: Academic Press
Release Date : 2013-05-30
Human Motion Simulation written by Karim Abdel-Malek and has been published by Academic Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-05-30 with Computers categories.
Simulate realistic human motion in a virtual world with an optimization-based approach to motion prediction. With this approach, motion is governed by human performance measures, such as speed and energy, which act as objective functions to be optimized. Constraints on joint torques and angles are imposed quite easily. Predicting motion in this way allows one to use avatars to study how and why humans move the way they do, given specific scenarios. It also enables avatars to react to infinitely many scenarios with substantial autonomy. With this approach it is possible to predict dynamic motion without having to integrate equations of motion -- rather than solving equations of motion, this approach solves for a continuous time-dependent curve characterizing joint variables (also called joint profiles) for every degree of freedom. Introduces rigorous mathematical methods for digital human modelling and simulation Focuses on understanding and representing spatial relationships (3D) of biomechanics Develops an innovative optimization-based approach to predicting human movement Extensively illustrated with 3D images of simulated human motion (full color in the ebook version)
A Three Dimensional Human Motion Simulation System
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Author : Michael Steven Goodrow
language : en
Publisher:
Release Date : 1985
A Three Dimensional Human Motion Simulation System written by Michael Steven Goodrow and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Human mechanics categories.
Simulation And Animation Of Human Motion Using Models Obtained From Identification Techniques
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Author : Yong Chen Choo
language : en
Publisher:
Release Date : 2009
Simulation And Animation Of Human Motion Using Models Obtained From Identification Techniques written by Yong Chen Choo and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Biomechanics categories.
Memory Based Human Motion Simulation
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Author : Woojin Park
language : en
Publisher:
Release Date : 2003
Memory Based Human Motion Simulation written by Woojin Park and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Development Of Marker Based Human Motion Capture Systems For Assembly Simulation And Ergonomic Analysis
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Author : Sajeev C. Puthenveetil
language : en
Publisher:
Release Date : 2013
Development Of Marker Based Human Motion Capture Systems For Assembly Simulation And Ergonomic Analysis written by Sajeev C. Puthenveetil and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with Human locomotion categories.
"In aerospace industry, the assembly operator is often exposed to potential ergonomic injuries due to awkward postures while working in confined spaces. Manually generating worker postures in simulation software for ergonomic analysis is cumbersome. This research focuses on the use of marker-based optical motion capture technology to generate human motion simulations in real-time for ergonomic analysis. To address the challenges involved in capturing human motions in a real work environment, an assembly operation was simulated in a four-walled Computer Automated Virtual Environment (CAVE) which provides an immersive 3D environment to the worker performing the assembly operation. Multiple cameras were set-up to capture motion data during fastening operation on a physical fuselage mock-up model as well as during virtual fastening developed using the CAVE. To facilitate the setting up of a portable turn-key motion capture system, a methodology for placing multiple cameras was developed. The process of transforming body joint coordinates of the human skeleton model in the motion capture system to the digital human model used for ergonomic analysis is explained. Anomalies in human motion simulation during motion capture were identified and corrected in real-time using anatomical body joint limits and a Kalman filter based predictive filtering algorithm, without the need for post-processing of motion data. The developed system has been demonstrated for human motion capture, graphic simulation and ergonomic analysis of fastening operation on a physical mock-up model and also virtual model of the belly section of an aircraft fuselage"--Abstract, leaf iii.
A Multibody Simulation Framework For Real Time Human Motion Tracking And Analysis Within The Unity Environment
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Author : John Richard Von Possel Abella
language : en
Publisher:
Release Date : 2019
A Multibody Simulation Framework For Real Time Human Motion Tracking And Analysis Within The Unity Environment written by John Richard Von Possel Abella and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Human mechanics categories.
Abstract: There is increasing interest in performing real-time human motion analysis to provide immediate feedback for clinical, sports, and rehabilitation purposes. In this thesis, we present a multibody simulation framework within the Unity environment that can be used for real-time human motion analysis. The framework incorporates musculoskeletal models derived from OpenSim and combines concepts from robotics and biomechanics to derive closed-form definitions for muscle-routing kinematics and kinematic Jacobians. The framework also uses efficient motion decomposition and reconstruction algorithms to track motion in joint space. To demonstrate the performance of the framework, two live-motion simulation experiments were conducted. The first experiment investigated the behavior of the adopted motion reconstruction algorithms by tracking a jogging motion, while the second experiment involved the calculation of the muscular effort values of three different bicep curl forms. In both test simulations, motion tracking and motion analysis were performed simultaneously. For the more computationally expensive second experiment, the simulation update rate averaged to about 105 Hz.
Human Motion Understanding Modeling Capture And Animation
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Author : Ahmed Elgammal
language : en
Publisher: Springer
Release Date : 2007-11-15
Human Motion Understanding Modeling Capture And Animation written by Ahmed Elgammal and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-11-15 with Computers categories.
This book constitutes the refereed proceedings of the Second Workshop on Human Motion, HumanMotion 2007, held in Rio de Janeiro, Brazil October 2007 in conjunction with ICCV 2007. The 22 revised full papers presented were carefully reviewed and selected from 38 submissions. The papers are organized in topical sections on motion capture and pose estimation, body and limb tracking and segmentation and activity recognition.
Simulation Of Human Motion Data Using Short Horizon Model Predictive Control
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Author : Marco Jorge Tome da Silva
language : en
Publisher:
Release Date : 2008
Simulation Of Human Motion Data Using Short Horizon Model Predictive Control written by Marco Jorge Tome da Silva and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
Many data-driven animation techniques are capable of producing high quality motions of human characters. Few techniques, however, are capable of generating motions that are consistent with physically simulated environments. Physically simulated characters, in contrast, are automatically consistent with the environment, but their motions are often unnatural because they are difficult to control. We present a model-predictive controller that yields natural motions by guiding simulated humans toward real motion data. During simulation, the predictive component of the controller solves a quadratic program to compute the forces for a short window of time into the future. These forces are then applied by a low-gain proportional-derivative component, which makes minor adjustments until the next planning cycle. The controller is fast enough for interactive systems such as games and training simulations. It requires no precomputation and little manual tuning. The controller is resilient to mismatches between the character dynamics and the input motion, which allows it to track motion capture data even where the real dynamics are not known precisely. The same principled formulation can generate natural walks, runs, and jumps in a number of different physically simulated surroundings.
Modeling Vehicle Ingress And Egress Using The Human Motion Simulation Framework
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Author : Matthew P. Reed
language : en
Publisher:
Release Date : 2008
Modeling Vehicle Ingress And Egress Using The Human Motion Simulation Framework written by Matthew P. Reed and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with categories.
The ease of getting into and out of passenger cars and light trucks is a critical component of customer acceptance and product differentiation. In commercial vehicles, the health and safety of drivers is affected by the design of the steps and handholds they use to get into and out of the cab. Ingress/egress assessment appears to represent a substantial application opportunity for digital human models. The complexity of the design space and the range of possible biomechanical and subjective measures of interest mean that developing useful empirical models is difficult, requiring large-scale subject testing with physical mockups. Yet, ingress and egress motions are complex and strongly affected by the geometric constraints and driver attributes, posing substantial challenges in creating meaningful simulations using figure models. Previous approaches to simulating ingress and egress have focused on the modification of stored motions from laboratory studies to achieve complex motion simulations. This paper presents a new approach using the Human Motion Simulation Framework, an integrated, modular, hierarchical system designed to provide flexible control for simulating both common and novel movements in any human figure model.
A Study Of Optimization Based Predictive Dynamics Method For Digital Human Modeling
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Author : Mahdiar Hariri
language : en
Publisher:
Release Date : 2012
A Study Of Optimization Based Predictive Dynamics Method For Digital Human Modeling written by Mahdiar Hariri and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Human body categories.
Here, kinematics of the motion is assumed to be known. It is shown that this approach leads to more realistic values for the contact forces and moments for a human motion task as opposed to the ZMP based approach. The proposed approach appears to be quite promising and needs to be fully integrated into the predictive dynamics approach of human motion simulation. Some other insights are obtained for the predictive dynamics approach of human motion simulation. For example, it is mathematically proved and also validated that there is a need for an individual constraint to ensure that the normal component of the resultant global forces remains compressive for non-adhesive contacts between the body and the environment. Also, the ZMP constraints and stability margins are applicable for the problems where all the contacts between the environment and the body are in one plane; however, the NCM constraints and stability margins are applicable for all types of arbitrary contacts between the body and the environment. The ZMP and NCM methods are used to model the motion of a human (soldier) performing several military tasks: Aiming, Kneeling, Going Prone and Aiming in Prone Position. New collision avoidance theorems are also presented and used in these simulations.