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Realistic modeling and Animation of human body Based on Scanned Data

Journal of Computer Science & Technology 2004年第4期19卷 529-537页

作者： Yong-YouMa HuiZhang Shou-WeiJiang SchoolofMechanicalEngineering EastChinaUniversityofScienceandTechnologyShanghai200237P.R.China SchoolofMechanicalEngineering ShanghaiJiaotongUniversityShanghai200030P.R.China

In this paper we propose a novel method for building animation model of realhuman body from surface scanned data. The human model is represented by a triangular mesh anddescribed as a layered geometric model. The model consists of two layers: the control skeletongenerating body animation from motion capture data, and the simplified surface model providing anefficient representation of the skin surface shape. The skeleton is generated automatically fromsurface scanned data using the feature extraction, and then a point-to-line mapping is used to mapthe surface model onto the underlying skeleton. The resulting model enables real-time and smoothanimation by manipulation of the skeleton while maintaining the surface detail. Compared withearlier approach, the principal advantages of our approach are the automated generation of bodycontrol skeletons from the scanned data for real-time animation, and the automatic mapping andanimation of the captured human surface shape. The human model constructed in this work can be usedfor applications of ergonomic design, garment CAD, real-time simulating humans in virtual realityenvironment and so on.

关键词： human body modeling 3D reconstruction animation real-time deformation

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A human Active Lower Limb Model for Chinese Pedestrian Safety Evaluation

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Journal of Bionic Engineering 2021年第4期18卷 872-886页

作者： Fuhao Mo Dian Luo Zheng Tan Bo Shang Xiaojiang Lv Donghua Zhou State Key Laboratory of Advanced Design and Manufacture for Vehicle body Hunan UniversityHunan 410082China School of Mechanical Engineerings Hunan University of Science and Technology Xiangtan 411201China Pan Asia Technical Automotive Center Co. LtdShanghai 201201China Zhejiang Key Laboratory of Automobile Safety Technology Geely Automobile Research InstituteNingbo 315336China Shanghai Key Laboratory of Forensic Medicine Shanghai Forensic Service PlatformAcademy of Forensic ScienceMinistry of JusticeShanghai 200063China

A subsystem impactor test for pedestrian lower limb injury evaluation has been brought in China New Car Assessment Protocol(CNCAP).Concerning large anthropometric differences of the people from different countries,the present study aims to establish and validate a finite element lower limb model representing 50th Chinese male size for pedestrian safety research,then compare its biomechanical responses with the general models currently in wide use in the world for pedestrian safety evaluation.Concerning the vehicle-pedestrian impact loading environment,the previously developed lower limb model with three-dimensional muscles was adjusted and validated through the related experiments.Then,the biomechanical responses of the validated model were compared with the Total human Model for Safety(THUMS)and Advanced Pedestrian Legform Impactor(aPLI)models by combing with four typical vehicles.The results showed that both consistency and significant differences of biomechanical responses existed between the present model and the other two models.The injury measurements of the thigh region of the present model showed extremely large differences with the other two models,while the tibia and Medial Collateral Ligament(MCL)injury measurements show similar values.Thus,it can be concluded that directly using the aPLI or THUMS models for Chinese pedestrian safety evaluation is not robust concerning both kinematic responses and injury measurements.

关键词： lower limb injury biomechanics human body modeling pedestrian safety finite element analysis

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Recent advances on virtual human synthesis

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Science in China(Series F) 2009年第5期52卷 741-757页

作者： XIA ShiHong WANG ZhaoQi Institute of Computing Technology Chinese Academy of Sciences Beijing 100190 China

Virtual human is a digital representation of the geometric and behavioral property of human beings in the virtual environment generated by computer. The research goal of virtual human synthesis is to generate realistic human body models and natural human motion behavior. This paper introduces the development of the related researches on these two topics, and some progresses on example based human modeling and motion synthesis, and their applications in Chinese sign language teaching, computeraided sports training and public safety problem studying. Finally, some hot research topics in virtual human synthesis are presented.

关键词： virtual human human body modeling dynamics inverse kinematics

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Automatic　modeling　of　Virtual　humans　and　body　Clothing

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Journal of Computer Science & Technology 2004年第5期19卷 575-584页

作者： NadiaMagnenat-Thalmann HyewonSeo FredericCordier MIRALab UniversityofGeneva24rueduGeneralDufourCH-1211GenevaSwitzerland

Highly realistic virtual human models are rapidly becoming commonplace incomputer graphics. These models, often represented by complex shape and requiring labor-intensiveprocess, challenge the problem of automatic modeling. The problem and solutions to automaticmodeling of animatable virtual humans are studied. Methods for capturing the shape of real people,parameterization techniques for modeling static shape (the variety of human body shapes) and dynamicshape (how the body shape changes as it moves) of virtual humans are classified, summarized andcompared. Finally, methods for clothed virtual humans are reviewed.

关键词： human body modeling animatable model automatic method

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Research on Dynamic Model of the human body

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Journal of Beijing Institute of Technology 2005年第2期14卷 184-187页

作者：张春林王光泉路敦勇 School of Mechanical and Vehicular Engineering Beijing Institute of Technology Beijing100081 China School

After summarizing the current situation of the research on human body modeling, a new dynamic model containing 5 equivalent masses has been proposed and the corresponding dynamic equations has been deduced too. By using this new model, more detailed information about the situation of the human body under impact and vibration can be obtained. The new model solves the problem that transmission functions of forces inside the human body can't be deduced by using 3-equivalent-mass model. It will find its usage in many applications.

关键词： biomechanical human body modeling dynamic model

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