Physics-Based Person Tracking Using Simplified Lower-Body Dynamics

Physics-Based Person Tracking Using Simplified Lower-Body Dynamics
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使用简化的下半身动力学进行基于物理的人员跟踪

DOI:
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发表时间:
2007
期刊:
2007 IEEE Conference on Computer Vision and Pattern Recognition
影响因子:
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通讯作者:
Aaron Hertzmann
Aaron Hertzmann
中科院分区:
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文献类型:
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作者:
Marcus A. Brubaker;David J. Fleet;Aaron Hertzmann

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我们引入了基于物理的 3D 人物跟踪模型。基于下半身动力学的生物力学特征,该模型捕获了双足运动的重要物理特性,例如平衡和地面接触,自然地概括为由于速度、步长和质量的变化而导致的风格变化,并避免了现有跟踪器出现的常见问题,例如脚滑。该模型动力学包括具有非弹性地面接触的人体运动的二自由度表示。随机控制器在行走的脚趾离地阶段产生脉冲力,并在腿之间产生类似弹簧的力。然后,高维运动观测模型以底层动力学为条件。我们使用该模型来跟踪视频中行走的人,包括转身、遮挡和变化步态的示例。
We introduce a physics-based model for 3D person tracking. Based on a biomechanical characterization of lower-body dynamics, the model captures important physical properties of bipedal locomotion such as balance and ground contact, generalizes naturally to variations in style due to changes in speed, step-length, and mass, and avoids common problems such as footskate that arise with existing trackers. The model dynamics comprises a two degree-of-freedom representation of human locomotion with inelastic ground contact. A stochastic controller generates impulsive forces during the toe-off stage of walking and spring-like forces between the legs. A higher-dimensional kinematic observation model is then conditioned on the underlying dynamics. We use the model for tracking walking people from video, including examples with turning, occlusion, and varying gait.
DOI: 10.1115/1.1427703
发表时间: 2002-02-01
影响因子: 1.7
作者:
Kuo, AD
通讯作者: Kuo, AD
DOI: 10.1115/1.1372322
发表时间: 2001-06-01
影响因子: 1.7
作者:
Kuo, AD
通讯作者: Kuo, AD