Using dual number method for motion analysis of left arm in a golf swing

A traditional method in capturing of human motion is using the cameras. The camera method, although widely used, has it own limitations. This paper presents a different way of capturing the human motion. The method involved utilizing electrogoniometer (biometrics, UK) to obtain the joint angles throughout the motion and by using dual Euler angles and dual Euler velocity analysis, the location and velocity of the measured segment or endeffectors can be estimated. This paper explores the possibility of using goniometer to measure the anatomical rotations and using dual number theory for the analysis of the swing.Koon Kiat Teu, Wangdo Kim and Franz Konstantin Fusshttp://portal.acm.org/citation.cfm?id=1044588.1044633#reference

Quantification of golf swing using anatomical joint motion

This paper presents a different approach of recording and analysing human motion. The method involved utilizing electrogoniometer (biometrics, UK) to obtain the joint angles throughout the motion and by using Dual Euler angles and Dual Euler velocity analysis, the location and velocity of the measured segment or end-effectors can be estimated. Using golf swing as a basis of study, this paper explores the possibility measuring the anatomical rotations and quantifies the golf swing. The segmental anatomical rotations were recorded as: shoulder (anteversion/retroversion; external/internal rotation; abduction/adduction), elbow (flexion/extension), forearm (pronation/supination), wrist (flexion/extension; radial/ulnar abduction). The results are then processed to illustrate the arm movement and the swing path of the club

Using dual euler angles for the analysis of arm movement during the badminton smash

Camera techniques are typically used in the study of human movement. However, as the number of joints and markers involved in a study increases, data extraction and calculation become increasingly tedious and complicated. To overcome this challenge, we propose a method of study that simplifies data extraction and calculation by using an electrogoniometer and dual Euler angles. The contribution of the rotation of each arm segment to produce a racket head’s speed was identified in the context of a badminton smash. The contribution of each segment rotation was computed using dual velocity analysis. A set of orthogonal Cartesian frames was established for computing the anatomical rotational velocities for each of the three segments of the upper arm. Electrogoniometers were attached to the subjects during the execution of the smash to obtain measurements of joint angles throughout the motion. To test the algorithm, the calculated velocity of the racket head was compared to the measured velocity. The calculated velocity was derived from an algorithm, while the measured velocity was obtained from a video image. The results are similar, indicating that the dual velocity method is suitable for determining segmental velocities in such kinematic situations.Koon Kiat Teu, Wangdo Kim, John Tan and Franz Konstantin Fus