Development of a real-time three-dimensional spinal motion measurement system for clinical practice

2006 ◽  
Vol 44 (12) ◽  
pp. 1061-1075 ◽  
Author(s):  
Christina Goodvin ◽  
Edward J. Park ◽  
Kevin Huang ◽  
Kelly Sakaki
Keyword(s):  
Clinical Practice ◽  
Real Time ◽  
Measurement System ◽  
Three Dimensional ◽  
Spinal Motion ◽  
Motion Measurement

Simple three-dimensional human motion analysis using monocular motion measurement system

2004 ◽  
Vol 2004 (0) ◽  
pp. 65-68
Author(s):  
Yoshio INOUE ◽  
Kyoko SHIBATA ◽  
Akihiro KIMURA ◽  
ShuoyuKochi WANG
Keyword(s):  
Motion Analysis ◽  
Measurement System ◽  
Three Dimensional ◽  
Human Motion ◽  
Human Motion Analysis ◽  
Motion Measurement

Use of RGB-D Camera for Analysis of Compensatory Trunk Movements in Upper Limbs Rehabilitation

2020 ◽  
Author(s):  
Alice Tissot Garcia ◽  
André Luiz Da Silva Kelbouscas ◽  
Leonardo L. da C. Guimarães ◽  
Sibyla Vioto Silva ◽  
Vinícius Menezes de Oliveira
Keyword(s):  
Measurement System ◽  
Dimensional Space ◽  
Three Dimensional ◽  
Assistive Robotics ◽  
Upper Limbs ◽  
Kinect Sensor ◽  
Rehabilitation Process ◽  
Motion Measurement ◽  
Trunk Movements ◽  
Three Dimensional Space

Assistive robotics has been shown to be an important tool in the patient's rehabilitation process. One of the rst steps in this process is to capture the movements performed by the patient to analyze the movement restrictions presented. The present work presents the development of a range of motion measurement system based on the position of thejoints in the three-dimensional space of the upper limbs using the Kinect sensor. In addition, preliminary tests are presented to capture compensatory movements of the trunk, in order to investigate the feasibility of using this system as a tool to detect compensatory movements.

Estimation of Occluded Lower Limb Using Inverted Pendulum Model

2013 ◽  
Vol 284-287 ◽  
pp. 2056-2063
Author(s):  
Hian Kun Tenn ◽  
Yao Yang Tsai
Keyword(s):  
Real Time ◽  
Measurement System ◽  
Lower Limb ◽  
Inverted Pendulum ◽  
Skeleton Model ◽  
Motion Measurement ◽  
Processing Rate ◽  
Positioning Errors ◽  
Inverted Pendulum Model ◽  
Pendulum Model

For many interactive vision based systems, users are captured by the system and modeled as a simplified skeleton. The skeleton model usually encounter problems of occlusion because of obstacles or other users appearing in the environment. In this paper, we proposed a method based on an inverted pendulum model (IPM), which was applied to recover the occluded leg of skeleton model. The skeleton model was provided by Vicon motion measurement system, which captured the participant's motions. One leg of the skeleton model was removed intentionally and the proposed method was used to estimate the pose of the occluded leg in real-time. The results showed that most of the positioning errors were within 10 cm on average and the processing rate exceeded 100 fps.

Accuracy of a System for Measuring Three-Dimensional Torso Kinematics during Manual Materials Handling

2004 ◽  
Vol 20 (2) ◽  
pp. 185-194
Author(s):  
Rebecca J. Giorcelli ◽  
Richard E. Hughes ◽  
Richard S. Current ◽  
John R. Myers
Keyword(s):  
Measurement System ◽  
Measurement Errors ◽  
Three Dimensional ◽  
Rotation Matrix ◽  
Body Motion ◽  
Lateral Bending ◽  
Test Fixture ◽  
Motion Measurement ◽  
Materials Handling ◽  
Value Decomposition

This paper describes a procedure developed and validated to assess the accuracy of an infrared-based motion measurement system used to perform a kinematic analysis of the torso with respect to the pelvis during simulated lifting tasks. Two rigid reflective marker triads were designed and fabricated for attachment to the thorax over the 6th thoracic vertebra and the pelvis. System accuracy was assessed for planar rotation as well as rotations about multiple orthogonal axes. A test fixture was used to validate known triad orientations. The spatial coordinates of these triads were collected at 120 Hz using a ProReflex motion measurement system. Single value decomposition was used to estimate a rotation matrix describing the rigid body motion of the thorax triad relative to the sacral triad at each point in time. Euler angles corresponding to flexion, lateral bending, and twisting were computed from the rotation matrix. All measurement error residuals for flexion, lateral bending, and twisting were below 1.75°. The estimated mean measurement errors were less than 1° in all three planes. These results suggest that the motion measurement system is reliable and accurate to within approximately 1.5° for the angles examined.

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