SS 5305 Popular Marker Setups 1 Objectives Marker

SS 5305 – Popular Marker Setups 1

Objectives • • • Marker Data Measurement Sequence Project Automation Framework (PAF) Popular marker setups PAF Interface 2

Motion Capture Workflow 1. 3. 2. 4. 5. automated by most mocap systems 6. 7.

Marker Data (Compare to Keyframe animation. Key points are recorded at every frame) With calibrated cameras, a performance session records and computes the 3 D position of markers from input images. Marker data = 3 D positions (of markers) Must convert positions into joint angles?

Measurement sequence Data acquisition & synchronization 2 D Capture Export => c 3 d, tsv Human Motion model Signal processing PAF – Project Automation Framework 3 D, force, EMG data QTM 2 D => 3 D High Speed Video EMG Force data Visual 3 D = Kinematics + Kinetics + EMG Visualization & Motion analysis Report

Human movement visualization

• Visual 3 D is extremely flexible and can use virtually any existing, (e. g. hybrid Helen Hayes) or custom designed marker model. • Qualisys can provide various tested marker model templates and supply pre-labeled AIM files. SYSTEM SETUP QTM SETTINGS CALIBRATION System CAPTURE Setup TRACKING ANALOG 7

Popular marker setups – all 3 of them supported by PAF Skin marker setup 6 DOF setup Wand marker setup

Video mode and Video overlay • • • All standard Oqus cameras can preview and collect video data at up to 30 fps. High-speed video version goes up to 500 fps. Video overlay proved highly useful for clinical assessment of soft tissue artefacts during gait and sport movements’ 3 D data capture. Qualisys Video Analysis - QVA is an additional 2 D analysis software tool used to manage and track 2 D video data in order to analyze video files produced by Oqus High Speed Video cameras.

Major components of Qualisys system: Oqus - Motion Capture Camera • Tracking movements in 3 D with infrared technology QTM – Qualisys Track Manager • Calibration and 3 D tracking • Data collection and cleaning • Automatic identification of markers • Synchronization with external equipment (force plates, EMG etc. ) • 3 D Data real-time streaming (to Visual 3 D, Motion Builder, Matlab, Lab. View) • Data export to various formats (c 3 d, tsv, avi etc) Data processing, analysis and visualization: • Visual 3 D and Motion Monitor - biomechanical analysis and report generation • Motion Builder, 3 DStudio. Max, Maya – RT visualization and animation production • Matlab, Lab. View, Excel - complex mathematic calculations.

QTM Project Automation Framework • Purpose: automate repetitive data collection and analysis • Link data collection to processing in Visual 3 D Patient info Select analysis Data collection Set of Trials c 3 d QTM PAF 1. 0 Excel Visual 3 D Calculation Calculate data Return of data Report in Word

PAF – Interface overview Data tree Details for selected item Data collection buttons PAF comes with powerful tools for managing client metadata (height, weight and birth date) which can easily be entered and changed directly in QTM. The data is stored in a simple, transparent file hierarchy, making it easy and hassle-free to move the data across disks and computers.

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