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A low-cost three-dimensional laser surface scanning approach for defining body segment parameters
Petros Pandis1, Anthony Mj Bull1
1Department of Bioengineering, Imperial College London, London, UK.
Summary
A new scanning technique offers an easy, fast, and accurate method for determining subject-specific body segment parameters. This low-cost system provides reliable estimates for ergonomics and musculoskeletal modeling applications.
Area of Science:
- Biomechanics
- Ergonomics
- Human Factors Engineering
Background:
- Body segment parameters are crucial for ergonomics and musculoskeletal system modeling.
- Traditional methods for obtaining these parameters are often time-consuming and labor-intensive, relying on manual measurements and complex equations.
Purpose of the Study:
- To develop and validate a novel scanning technique for measuring subject-specific body segment parameters.
- To provide an easy, fast, accurate, and low-cost alternative to existing measurement methods.
Main Methods:
- A scanning system was developed to capture body segment data.
- The technique was validated using a mannequin for volumetric measurements and a homogeneous object for moment of inertia calculations.
Main Results:
- The scanning system obtained body segment parameters in a single operation (8-10 seconds).
- Volumetric measurements showed a standard deviation of 2.5% for the upper limb of a mannequin.
- The system demonstrated a 3.1% difference between scanning and actual volume and a maximum mean error of 2.2% for moment of inertia.
Conclusions:
- The developed low-cost scanning system effectively provides quick and accurate subject-specific body segment parameter estimates.
- This technique has significant potential to improve efficiency and precision in ergonomic and biomechanical analyses.
