supervised by: Asst. Prof. Dr. Ergin Tönük Prof. Dr. Turgut Tümer

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Presentation transcript:

supervised by: Asst. Prof. Dr. Ergin Tönük Prof. Dr. Turgut Tümer Comparison of Kinematic Results Between METU-KISS & Ankara University-VICON Gait Analysis Systems EZGİ CİVEK supervised by: Asst. Prof. Dr. Ergin Tönük Prof. Dr. Turgut Tümer 24.12.2004

Outline Introduction Gait Analysis Motion Capture Systems Comparison of the two systems Comparison of the kinematic results Future Studies 24.12.2004

Objective To compare the kinematic results of two different gait analysis systems. Data Acquisition Data Analysis Performance Methodology Exchanging the motion data between KISS & VICON. Studying the same subject on each system. 24.12.2004

Objective To make KISS compatible with a common widely used file format. To enlarge the database available. 24.12.2004

Gait Analysis Analysis of the mechanics of human body during walking, stair ascending/descending, obstacle avoidance. 24.12.2004

Gait Analysis Gait analysis plays a key role in: Diagnosis of disorders in lower extremity Decision making before operations Evaluation of prosthetic joint replacements Comparison of gait parameters before and after operations Studies in orthotics, amputees, athletic injuries 24.12.2004

Human Gait 24.12.2004

Motion Capture Systems HARDWARE CCD Cameras Markers Force Plate(s) EMG Unit SOFTWARE Data Acquisition Calculation of Gait Parameters 24.12.2004

Marker Locations 24.12.2004

KISS VICON Commercial system 5 cameras 2 force plates VICON 370 Vicon Clinical Manager Helen Hayes Marker set Locally developed in ME 6 cameras 2 force plates KISS – DAQ KISS – GAIT Helen Hayes Marker set 24.12.2004

input for kinematic data analysis File Formats KISS *.hvd *.yor VICON *.tvd *.c3d Raw video data (input for 3D reconstruction) Processed data file (3D trajectory data) input for kinematic data analysis 24.12.2004

C3D - A 3D Biomechanics Data Standard Developed by Andrew Dainis in 1987. Used by almost all commercial motion capture systems. 24.12.2004

Converting *.yor file to *.c3d Export the coordinate data from *.yor file as *.txt format. Arrange the data in text file according to c3d format. Create *.c3d file by a program called ‘C3D Editor’. 24.12.2004

KISS VICON 24.12.2004

VICON KISS 24.12.2004

Future Studies Converting *.c3d to *.yor file format. Studying the same subject in both systems. Writing a program for the arrangenments of files required in the conversion process. 24.12.2004

THANK YOU!