biostage tm for the life sciences october 2010 draft version

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Markerless Motion Capture

BioStageTM for the Life SciencesOctober 2010Draft Version

Computer Vision Systems

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Overview kinematic systems

Camera-based Sensor-based

Marker-basedSystems

Goniometer– 1D, 2D

InertialSensors

Electromagn.Sensors – 3D

VideoCamera

Infra-redCamera

Marker-lessSystems

Aktiv-Marker

Passiv-Marker

BioStage

Xsens MVNAnimazoo IGS-190

ViconMACQualisysOptitrack

Polhemusmotion sensors (accelerometers) and rotation sensors (gyroscopes) to calculate the position, orientation, and velocity

Marker-basedSystems

PEAKSIMI

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Biomech analysis systemsKinetics Electro-

myography

Body-- Dimensions

-Structure- Proportion

Position,Angle, Velocity,

etc.

Forces,Moments, Pressure

Distribution

Muscle-action-

potiential

Data integration & Correlation

Kinesiological Analysis

“Body” “Motion” “Forces” “Neuromusc. Control”

Anthro-pometry

Kinematics

BioStage

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Planes of Motion

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Joint Actions – i.e. hip

http://www.brianmac.co.uk/musrom.htmhttp://www.physical-solutions.co.uk/articles/Understanding%20Planes%20and%20Axes%20of%20Movement.pdf

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Biomechanics Kinesiology Exercise Science Physical Therapy Physical Medicine & Rehabilitation Human Movement Science Health, Physical Education, and Recreation Biomedical Engineering

BioStage - Research

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Orthopaedics Cerebral Palsy Neuroscience Physical and Occupational Therapy Rehabilitation Podiatry Chiropractic Posturology Sports Medicine

BioStage – Clinical Applications

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Golf Baseball Pitching and Throwing Fitness Biking Tennis Soccer et altri

BioStage – Sports Applications

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Applications and Benefitsfor

Clinical Apps and the Academics

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Pre-and post surgery evaluations Rehabilitative Treatment Lower extremities - Gait Analysis Upper body Analysis Orthopaedic Joint Replacements Posture Analysis Orthotics and Prosthesis Development

BioStage – Specific Clinical Use

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develop predictive models of pathology diagnose/quantify functional limitations identify multi-level motion problems document functional status support Healthcare Research

Clinical Motion Analysis to…

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Surgeon optimize their techniques Surgeon design an optimal surgical plan Surgeon determine if and when surgery is necessary Implant designer improve devices Coach better quantify improvement / loss of performance during training Patient better educated by seeing changes Athlete better quantify improvement by comparing with other athletes Club owner find out if athlete is prone for injury PT/Rehab doctor better quantify improvement during therapy Health care system long-term improvement in cost and quality of treatment Student Easier access to motion capture technology

Motion Analysis – General Benefits

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Benefits for Clinical Apps• Reduced patient preparation time

• Easier on patients with impairments

• Easier for nurses to work with patients

• More natural movement leads to higher data quality

• Immediate results and reports available to doctor and patient for review

• True and valid data comparison over repeated trials

• Reduced cost for motion analysis for the patient and the doctor

• Fun 3D immersive visuals encourage patients to exercise more often

• Improved exercise experience, patients are more actively engaged in recovery regime

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Benefits for the Academics• Markerless system allows all students to get hands-on

experience with computerized motion analysis

• Streamlined real-time capture process for fixed class times and research timelines

• User-friendly interfaces ideal for multi-discipline and interdepartmental use

• A state-of-the-art-solution to attract students, businesses, and professionals to the University

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Tracking children

Tracking subjects with impairments (cannot stand or walk straight, arms close to the torso, etc.)

Tracking of amputees

Tracking of subject in wheel chairs, using walker, cane, crutches or other equipment

Tracking internal / external rotation

What validation have you done?

What is the accuracy of the data?

Do you have any publications?

Challenges

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Integration Software & Hardware

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TMM Motion

Analysis Software

OM Motion

Tracking

EMG Muscle Activity

Video

Integrated Motion Analysis

Kinematics

Kinetic

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Integration The MotionMonitorReal Time Animation Kinematics EMGKinetics

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Integration Force Plates Measurement of floor reaction forces in 3 dimensions

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Integration EMG

Wireless EMG electrodes

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Validation and Accuracy

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BioStage Model

BioStage Model

Tracking of 21 Segments

Segment length directly measured or derived from separate measurements

Static and dynamic (functional) user calibration

Length ratios based on Drillis and Contini (1966)

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Joint Degree of Freedom

BioStage Model

Head/Neck: 3DoFNeck/Upper Chest: 1DoFUpper Chest/Mid Torso: 3DoFMid / Lower Torso: 3DoFHip Joint: 3DoFKnee Joint: 3DoFAnkle Joint: 1DoFShoulder Joint: 3DoFElbow Joint: 1DoFWrist: Locked to lower arm

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Validation study in Cologne Evaluation and Acurracy tests Comparison with Vicon system Jan 2010 – Jun 2010 Goal: Proof translational accuracy of 5mm and rotational

accuracy of 3deg Problem: Reference marker-less with marker-based

Institut für Biomechanik und Orthopädie

German Sports Science University in Cologne

Prof. G.P. BrueggemannKai Oberländer

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Show accuracy Validate vs existing systems

provide a fitting system that ensures precise, repeatable, consistent length measurements of human bones/segments.

deliver anthropometric measurements through a defined protocol in a totally "non-invasive" method in real-time.

evaluate BioStage, its performance, and to assess its accuracy, reliability and suitability for use in research, sports and clinical settings.

perform an assessment of errors that affect temporal, kinematic, and kinetic variables when estimated by means of the proposed markerless system compared to the existing markerbased motion capture systems using reflective markers currently used in motion analysis.

validate BioStage for biomechanical research, sports and clinical use

Validation Goals

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26Organic Motion - BioStage

Validation and Accuracy Overview

8/27/2010

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8/27/2010

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2D Video Analysis / Full Range of Motion•Gait•Squatting•Pendulum motion

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8/27/2010

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Tradeshows

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CSM (Combined Section Meeting) ACSM (American College of Sports Med) APTA (American PT Association) ASB (American Society of Biomechanics) ISBS (Internat. Society of Biom.in Sports) GCMAS (Gait and Clinical MovAnal Society) AACPDM (American Academy for Cerebral

Palsy and Developmental Medicine )

Important Tradeshows

biostage tm for the life sciences october 2010 draft version

Documents