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Comparison Comparison oof Kinematic Results f Kinematic Results

Between METU-KISS Between METU-KISS & & Ankara Ankara

University-VICON Gait Analysis University-VICON Gait Analysis

SystemsSystems

EZGİ CİVEKEZGİ CİVEK

supervised by: Asst. Prof. Dr. Ergin Tönüksupervised by: Asst. Prof. Dr. Ergin Tönük

Prof. Dr. Turgut TümerProf. Dr. Turgut Tümer

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OutlineOutline

IntroductionIntroduction Gait AnalysisGait Analysis Motion Capture SystemsMotion Capture Systems Comparison of the two systemsComparison of the two systems Comparison of the kinematic resultsComparison of the kinematic results Future StudiesFuture Studies

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ObjectiveObjective

To comparecompare the kinematic results of two different gait analysis systems.

ExchangingExchanging the motion data between KISS & VICON.

Studying the same subject on each system.

Data AcquisitionAcquisition Data Analysis

PerformancePerformance Methodology

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ObjectiveObjective

To makemake KISS compatible with a common widely used file format.

To enlarge the database available.

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Gait AnalysisGait Analysis

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

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Gait AnalysisGait Analysis

Gait analysis plays a key role in:Gait analysis plays a key role in:

Diagnosis of disorders in lower extremityDiagnosis of disorders in lower extremity

Decision making before operationsDecision making before operations

Evaluation of prosthetic joint replacementsEvaluation of prosthetic joint replacements

Comparison of gait parameters before and Comparison of gait parameters before and after operationsafter operations

Studies in orthotics, amputees, athletic Studies in orthotics, amputees, athletic injuriesinjuries

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Human GaitHuman Gait

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Motion Capture SystemsMotion Capture Systems

HARDWAREHARDWARE

CCD CamerasCCD Cameras MarkersMarkers Force Plate(s)Force Plate(s) EMG UnitEMG Unit

SOFTWARESOFTWARE

Data Data AcquisitionAcquisition

Calculation of Calculation of Gait Gait ParametersParameters

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Marker LocationsMarker Locations

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KISSKISS VICONVICON

Locally developed in Locally developed in MEME

6 cameras6 cameras

2 force plates2 force plates

KISS – DAQKISS – DAQ

KISS – GAITKISS – GAIT

Helen Hayes Marker Helen Hayes Marker setset

Commercial systemCommercial system

5 cameras5 cameras

2 force plates2 force plates

VICON 370VICON 370

Vicon Clinical Vicon Clinical ManagerManager

Helen Hayes Marker Helen Hayes Marker setset

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File FormatsFile Formats

KISSKISS

*.hvd*.hvd

*.yor*.yor

VICONVICON

*.tvd*.tvd

*.c3d*.c3d

Raw video dataRaw video data(input for 3D (input for 3D reconstruction)reconstruction)

Processed data fileProcessed data file

(3D trajectory data) (3D trajectory data)

input for kinematic input for kinematic data analysisdata analysis

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C3D - A 3D Biomechanics Data C3D - A 3D Biomechanics Data StandardStandard

Developed by Andrew Dainis in 1987.

Used by almost all commercial motion capture systems.

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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’.

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KISSKISS VICON VICON

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KISSKISSVICOVICONN

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Future StudiesFuture 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.