David Kennedy.  In the past MMC systems used passive models with video systems used for motion capture.  But with these systems automatic and accuracy.

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Presentation transcript:

David Kennedy

 In the past MMC systems used passive models with video systems used for motion capture.  But with these systems automatic and accuracy is an issue.  The new system will be using a laser scanner instead of the motion capture video system.

 New system uses continuous space  Developed an algorithm for pose and shape iterative registration.  Allows for automatic generation of a subject- specific model from a single static pose.

 13 segments consisting of the head, torso, pelvis, arms, forearms, thighs, shanks, and feet. ◦ 12 joints each with 6 degrees of freedom.  Each of the degrees of freedom were constrained separately from each other.  Iterative closest point (ICP) algorithm

 Made using space of human shapes.  Allowing for body shapes to be expressed as free-form mesh.  The shape algorithm then would find the best shape parameters to match the model of the human shape space to target data mesh.

 5 male and 4 female participants. ◦ Ranging in body weight and height.  A training set was generated by using a laser scanner to locate markers placed on anatomical landmarks on the body.  These landmarks were used to find the 10 joint centers.

 Corazza, S.; Gambaretto, E.; Mündermann, L.; Andriacchi, T. P.;, "Automatic Generation of a Subject-Specific Model for Accurate Markerless Motion Capture and Biomechanical Applications," Biomedical Engineering, IEEE Transactions on, vol.57, no.4, pp , April 2010 doi: /TBME URL: explore.ieee.org/stamp/stamp.jsp?tp=&arnu mber= &isnumber= [I.F. (2007): 1.677] explore.ieee.org/stamp/stamp.jsp?tp=&arnu mber= &isnumber=

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