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Human Body Tracking in the Monocular Sequence Yu Huang, Tom Huang Beckman Inst. UIUC, 2002 We present a 2-D model-based method of human body tracking from a monocular video sequence. Morris & Rehg put forward a 2-D Scaled Prismatic Model (SPM) for figure registration which has far fewer singularity problems than 3-D models. Here we extend it in a 2-D cardboard human body model with additional one DOF of width change. Based on this modified 2-D model rather than 3-D model in Bregler & Malik’s work, we also set up a mixture motion model for body movements and then solve motion parameters of the articulated body using EM in a statistical framework, where the model-based kinematic constraints are incorporated in a linear form. Details are given in our paper ICPR'02. A 2-D Human Body Model: Scaled Prismatic Planar Model Image velocities due to body state velocities for the model Calculation of elements of Jacobian matrix in forward kinematics LS computation of articulated motion parameters in the optic flow framework Initialization of the 2-D Model for Human Body Tracking Frontal walk tracking clip Left walk tracking clip Right walk tracking clip |
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