Physical Activity detection and Body Posture Recognition
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Physical Activity detection and Body Posture Recognition Abbas Arghavani, Haibo Zhang Department of Computer Science 27/11/2017 1 Department of Computer Science University of Otago
Transcript of Physical Activity detection and Body Posture Recognition
Physical Activity detection
and Body Posture Recognition
Abbas Arghavani, Haibo Zhang
Department of Computer Science27/11/2017 1
Department of Computer Science
University of Otago
Body Motion Capture
Applications:• Filmmaking
• Computer Gaming
• Sport
• Virtual Reality
• Rehabilitation
• …
Motion Capture/Tracking:
- the process of recording or reconstructing the movement of body parts.
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Body Motion Capture
Motion Capture Technologies
Mechanical motion capture systems
linked structures
track the degree of rotation for each link
no data noise
restricted movement
fixed configuration of sensors
expensive
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Gypsy 7™ Motion Capture System
Motion Capture Technologies
Optical motion capture systems
light weight reflective markers
high resolution cameras
marker occlusion
limited application environment
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Motion Capture Technologies
Inertial motion capture systems
Inertial Measurement Unit (IMU)
Accelerometer (±2g, ±4g, ±8g, ±16g )
Gyroscope (±250, ±500, ±1000 )
Magnetometer (±4800μT )
Small size
High accuracy
Cheap (~ 5 USD)
Easy to use
Not limited to the lab or studio
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3x3x1mmShimmer3 IMU Unit
IMU-based Motion Tracking
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Accelerometer: gravity direction
Gyroscope: angular velocity
Magnetometer: magnetic field
Accelerometer
Gyroscope Fusion Algorithm
Quaternion
Rotation
Magnetometer
What We Have Done @ Otago
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Our projects:
Body posture capture
Body Posture Capture
Body Posture Capture
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Our projects:
Body posture capture
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Our projects:
Spinal posture monitoring and improper curve recognition
Smart shirt for spinal posture
monitoring and bad posture detection
Activity Recognition and Posture Detection
