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フィルムデータの平滑化法について
https://doi.org/10.18999/njhpfs.8.1.95
https://doi.org/10.18999/njhpfs.8.1.95c1166d14-05a1-4929-8930-18b9e7522769
名前 / ファイル | ライセンス | アクション |
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Item type | itemtype_ver1(1) | |||||||||||||
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公開日 | 2023-05-08 | |||||||||||||
タイトル | ||||||||||||||
タイトル | フィルムデータの平滑化法について | |||||||||||||
言語 | ja | |||||||||||||
その他のタイトル | ||||||||||||||
その他のタイトル | Smoothing method for kinematic data derived from film motion analysis | |||||||||||||
言語 | en | |||||||||||||
著者 |
桜井, 伸二
× 桜井, 伸二
× 池上, 康男
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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 | |||||||||||||
内容記述 | ||||||||||||||
内容記述 | All kinematic studies utilize data obtained from some type of measurement and data reduction system, which inherently introduces noise into the displacement signal. This noise causes large inaccuracies when velocities and accelerations are determined by direct differentiation. Therefore, some form of additional data treatment, such as digital filtering, is essential. Though digital filtering is superior to reduce the noise, there occur serious problems in using this method. These are 1) difficulty to determine the cut off frequency of the filter objectively and 2) generation of terminal distortion on both ends of data by filtering. Utilizing a simulation and actual data analysis, methods to solve these problems were investigated. Results are as follows : (1) A spectrum analysis of the velocity or acceleration data derived from direct differentiation of non-filtered spatial data was helpful to decide the suitable cut off frequency of the filter. (2) A technique of "finite difference followed by filtering" decreased the terminal distortion, while other conventional techniques, such as often utilized "filtering followed by finite defference" method, were clearly inferior. | |||||||||||||
言語 | en | |||||||||||||
内容記述タイプ | Abstract | |||||||||||||
出版者 | ||||||||||||||
言語 | ja | |||||||||||||
出版者 | 名古屋大学総合保健体育科学センター | |||||||||||||
出版者 | ||||||||||||||
言語 | en | |||||||||||||
出版者 | The Research Center of Health, Physical Fitness and Sports, Nagoya University | |||||||||||||
言語 | ||||||||||||||
言語 | jpn | |||||||||||||
資源タイプ | ||||||||||||||
資源タイプresource | http://purl.org/coar/resource_type/c_6501 | |||||||||||||
タイプ | departmental bulletin paper | |||||||||||||
出版タイプ | ||||||||||||||
出版タイプ | VoR | |||||||||||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||||||
ID登録 | ||||||||||||||
ID登録 | 10.18999/njhpfs.8.1.95 | |||||||||||||
ID登録タイプ | JaLC | |||||||||||||
収録物識別子 | ||||||||||||||
収録物識別子タイプ | PISSN | |||||||||||||
収録物識別子 | 0289-5412 | |||||||||||||
書誌情報 |
ja : 総合保健体育科学 en : Nagoya Journal of Health, Physical Fitness & Sports 巻 8, 号 1, p. 95-102, 発行日 1985-03-30 |