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Validity and Reliability of Head Posture Measurement using Microsoft Kinect : 키넥트를 이용한 두위측정의 타당도와 신뢰도의 평가
DC Field | Value | Language |
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dc.contributor.advisor | 황정민 | - |
dc.contributor.author | 오백록 | - |
dc.date.accessioned | 2017-07-19T10:23:16Z | - |
dc.date.available | 2017-07-19T10:23:16Z | - |
dc.date.issued | 2014-02 | - |
dc.identifier.other | 000000017037 | - |
dc.identifier.uri | https://hdl.handle.net/10371/132642 | - |
dc.description | 학위논문 (석사)-- 서울대학교 대학원 : 의학과, 2014. 2. 황정민. | - |
dc.description.abstract | Introduction: Accurate and effective measurement of anomalous head posture is critical for evaluating severity of disease and determining a surgical plan for patients with ocular torticollis. For increasing the precision of head-posture measurements, several systems that use digital technologies have been proposed. To date, the common disadvantages of all such head-posture-measurement systems is that subjects are required to wear a head-mounted device and the difficult setup. To address this problem, we need a device that is contact-free and easy-to-setup. In this study, we investigated the possibility of adapting a controller-free 3D camera (Microsoft Kinect) for evaluating anomalous head posture.
Methods: Considering the cervical range of motion (CROM) as a reference, one- and three-dimensional (1D and 3D) head postures of 12 normal subjects (28–58 years of age | - |
dc.description.abstract | 6 women and 6 men) were obtained using the KHT. The KHT was validated by the Pearson correlation coefficient and the intraclass correlation (ICC) coefficient. Test-retest reliability of the KHT was determined by its 95% limit of agreement (LoA) with the Bland–Altman plot. Face recognition success rate was evaluated for each head posture.
Results: The measurements of 1D and 3D head posture performed using the KHT were very close to those of the CROM with correlation coefficients of 0.99 and 0.97 (P < 0.05), respectively, as well as with an ICC of >0.99 and 0.98, respectively. The reliability tests of the KHT in terms of 1D and 3D head postures had 95% LoA angles of approximately ±2.5°and ±6.5°, respectively. Conclusions: The KHT showed good agreement with the CROM and relatively good test–retest reliability. Considering its high performance, convenience, and low cost, KHT could be clinically used as a head-posture-measuring system. | - |
dc.description.tableofcontents | I. Introduction ----------------------------------------------------- 1
II. Methods 1. Subjects --------------------------------------------------------- 3 2. Kinect head tracker (KHT) --------------------------------- 3 3. CROM ---------------------------------------------------------- 7 4. Procedure ------------------------------------------------------ 8 5. Data analysis -------------------------------------------------- 9 III. Results 1. Face recognition rate in 1D posture --------------------- 10 2. Validity of KHT in 1D postures --------------------------- 10 3. Reliability of KHT for 1D postures ---------------------- 13 4. Face recognition rate in 3D posture --------------------- 15 5. Validity of KHT in 3D postures --------------------------- 17 6. Reliability of KHT for 3D postures ---------------------- 20 IV. Discussion ------------------------------------------------------ 22 V. Appendix ------------------------------------------------------- 28 VI. References ------------------------------------------------------ 30 VII. 국문초록 ------------------------------------------------------- 33 | - |
dc.format | application/pdf | - |
dc.format.extent | 1038125 bytes | - |
dc.format.medium | application/pdf | - |
dc.language.iso | en | - |
dc.publisher | 서울대학교 대학원 | - |
dc.subject | Kinect | - |
dc.subject | anomalous head posture | - |
dc.subject | head posture measurement | - |
dc.subject.ddc | 610 | - |
dc.title | Validity and Reliability of Head Posture Measurement using Microsoft Kinect | - |
dc.title.alternative | 키넥트를 이용한 두위측정의 타당도와 신뢰도의 평가 | - |
dc.type | Thesis | - |
dc.description.degree | Master | - |
dc.citation.pages | iv, 34 | - |
dc.contributor.affiliation | 의과대학 의학과 | - |
dc.date.awarded | 2014-02 | - |
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