オプティカルフローを用いたreal-time MRI映像における調音運動検出・提示手法

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2023/07/01

タイトル(英語): A Method for Detecting and Displaying Articulation Movements in Real-time MRI Movies Using Optical Flow

著者名: 大浦　杏奈（早稲田大学），浅井　拓也（早稲田大学），菊池　英明（早稲田大学）

著者名(英語): Anna Oura (Waseda University), Takuya Asai (Waseda University), Hideaki Kikuchi (Waseda University)

キーワード: オプティカルフロー，real-time MRI，調音，発話訓練　　optical flow，real-time MRI，articulation movement，speech training

要約(英語): Speech training methods using speech presentation are difficult to adapt to learning foreign languages or supporting the hearing impaired. Nonetheless, this issue could be resolved by displaying articulation movements. Therefore, it is necessary to devise a method of displaying articulation movements for speech training situations. In this study, real-time MRI (rtMRI) movie images of actual articulation movements were analyzed. However, the articulation movements imaged in rtMRI movies are incredibly fine and fast and impossible to discern with the naked eye. Therefore, we investigated a method for detecting articulation movements captured from rtMRI movies using optical flow. Analysis was performed on an rtMRI movie during /ra/ single-mora vocalizations, and movements of the tongue contacting and separating from the posterior part of the gums were well observed. These are considered to constitute detected articulation movements for /ra/ verbalizations. Thus, the proposed method could be used to confirm the movements during any mora speech. Furthermore, the proposed method could be useful for selecting articulation movements to be presented during speech training.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.143 No.7 （2023） 特集：2022年電子・情報・システム部門大会

本誌掲載ページ: 686-693 p

原稿種別: 論文／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/143/7/143_686/_article/-char/ja/