WEKO3
アイテム
Sports Court-Based Camera Calibration Technique for Three-Dimensional Reconstruction of Knee Joint Kinematics
https://doi.org/10.14993/00001236
https://doi.org/10.14993/00001236260e5394-c5f7-4fac-9904-4cf0f0193bad
| 名前 / ファイル | ライセンス | アクション |
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P001-011.pdf (1.0 MB)
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| アイテムタイプ | 紀要論文 / Departmental Bulletin Paper(1) | |||||||||||||||||||||
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| 公開日 | 2018-06-12 | |||||||||||||||||||||
| タイトル | ||||||||||||||||||||||
| タイトル | Sports Court-Based Camera Calibration Technique for Three-Dimensional Reconstruction of Knee Joint Kinematics | |||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
| 言語 | ||||||||||||||||||||||
| 言語 | eng | |||||||||||||||||||||
| キーワード | ||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||||||
| 主題 | direct linear transformation method | |||||||||||||||||||||
| キーワード | ||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||||||
| 主題 | three dimensional knee kinematics | |||||||||||||||||||||
| キーワード | ||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||||||
| 主題 | anterior cruciate ligament injury | |||||||||||||||||||||
| キーワード | ||||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
| 主題Scheme | Other | |||||||||||||||||||||
| 主題 | camera calibration | |||||||||||||||||||||
| 資源タイプ | ||||||||||||||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||||||||||||||||||
| 資源タイプ | departmental bulletin paper | |||||||||||||||||||||
| ID登録 | ||||||||||||||||||||||
| ID登録 | 10.14993/00001236 | |||||||||||||||||||||
| ID登録タイプ | JaLC | |||||||||||||||||||||
| アクセス権 | ||||||||||||||||||||||
| アクセス権 | open access | |||||||||||||||||||||
| アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||||||||||||||||||
| 著者 |
小笠原, 一生
× 小笠原, 一生
× 小柳, 好生
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| 抄録 | ||||||||||||||||||||||
| 内容記述タイプ | Abstract | |||||||||||||||||||||
| 内容記述 | Videos of sports injuries provide beneficial insight for understanding their mechanisms. Recently, video analysis of actual injuries is particularly focused upon by researchers studying the anterior cruciate ligament（ ACL）. It is expected that establishing a technology capable of quantifying 3D knee kinematics using accidentally filmed videos of injuries could further our understanding of the ACL injury mechanism. The purpose of this study was to validate a camera calibration technique using sports court geometries to establish a methodology to extract 3D knee joint kinematics from uncalibrated video sequences. Four cameras were calibrated using line intersections and the vertical goal mouth of a handball court. A 1.6-m scaling pole, goniometerembedded link model, and jump-landing motions were filmed, and those 3D kinematics were reconstructed via the direct linear transformation method. The reconstructed values were compared with direct measurements and marker-based motion capture data to assess the accuracy of the reconstruction. Inter- and intra-operator differences were quantified to evaluate the objectivity and reliability of the technique. The length errors ranged from 0.65 to 1.7 cm and angular errors were 1.67°-3.90°. Knee flexion/extension was most accurately reconstructed（ errors: 2.71°-4.25°）, and the knee adduction/abduction showed moderate accuracy（ errors: 3.13°-5.35°）. The axial rotation showed large errors of 5.02°-6.53°. Although some limitations exist, the error ranges were small relative to those of previously reported knee displacements during actual ACL injury. Therefore, this technique can be used to quantify knee kinematics from uncalibrated video sequences with reasonable precision. | |||||||||||||||||||||
| 言語 | en | |||||||||||||||||||||
| 書誌情報 |
ja : 健康運動科学 en : Mukogawa Journal of Health and Exercise Science 巻 5, 号 1, p. 1-11, 発行日 2015-03-03 |
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| 出版者 | ||||||||||||||||||||||
| 出版者 | 武庫川女子大学健康運動科学研究所 | |||||||||||||||||||||
| 言語 | ja | |||||||||||||||||||||
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| 収録物識別子タイプ | PISSN | |||||||||||||||||||||
| 収録物識別子 | 2185-338X | |||||||||||||||||||||
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| 収録物識別子タイプ | NCID | |||||||||||||||||||||
| 収録物識別子 | AA12576562 | |||||||||||||||||||||
