Application of Compensation Method of Motion Analysis Error Using Displacement Dependency between Anatomical Landmarks and Skin Markers Due to Soft Tissue Artifact

• 영문명: 연조직 변형에 의한 해부학적 지표와 피부마커의 변위 상관성을 이용한 동작분석 오차 보정 방법의 적용
• 발행기관: 한국산업경영시스템학회
• 저자명: 류태범(Taebeum Ryu)
• 간행물 정보: 『산업경영시스템학회지』제35권 제4호, 24~32쪽, 전체 9쪽
• 주제분류: 경제경영 > 경영학
• 파일형태: PDF
• 발행일자: 2012.12.31

영문 초록

Of many approaches to reduce motion analysis errors, the compensation method of anatomical landmarks estimates the position of anatomical landmarks during motion. The method models the position of anatomical landmarks with joint angle or skin marker displacement using the data of the so-called dynamic calibration in which anatomical landmark positions are calibrated in ad hoc motions. Then the anatomical landmark positions are calibrated in target motions using the model. This study applies the compensation methods with joint angle and skin marker displacement to three lower extremity motions (walking, sit-to-stand/stand-to-sit, and step up/down) in ten healthy males and compares their performance. To compare the performance of the methods, two sets of kinematic variables were calculated using different two marker clusters, and the difference was obtained. Results showed that the compensation method with skin marker displacement had less differences by 30~60% compared to without compensation. And, it had significantly less difference in some kinematic variables (7 of 18) by 25~40% compared to the compensation method with joint angle. This study supports that compensation with skin marker displacement reduced the motion analysis STA errors more reliably than with joint angle in lower extremity motion analysis.

목차

1. Introduction

2. Methods

3. Results

4. Discussion and Conclusions

Acknowledgement

References

키워드

Motion Analysis Soft Tissue Artifact Anatomical Landmark Calibration and Compensation Skin Marker Displacement