| Presentation | 2019-12-06 [Poster Presentation] Estimation of three-dimensional tongue shape from midsagittal tongue contour using regression models Tatsuya Kitamura, Hisanori Makinae, Masashi Ito, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In this study, we investigated methods to estimate the tongue contours of the outer sagittal planes from a midsagittal tongue contour using linear and machine-learning-based regression models. To validate the method, tongue contours were extracted from each frame of a 3D MRI movie of the three sagittal planes, including the midsagittal plane, recorded while a male adult speaker produced the Japanese vowel sequence /aiueo/. The extracted tongue contours were then converted into harmonic amplitude profiles (HAPs) using a 2D Fourier transformation to reduce the number of dimensions. Finally, we calculated the coefficients of a multiple regression model and trained a random forest regression model to map the HAP of the midsagittal plane to those of the outer sagittal planes. In comparison with the multiple regression model, the random forest regression model demonstrated a higher estimation accuracy and exhibited an average distance error of less than 2.0 mm in a 10-fold cross-validation test. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | tongue contourthree-dimensional MRI datalinear regressionrandom forest regressiondata-driven approach |
| Paper # | SP2019-40 |
| Date of Issue | 2019-11-29 (SP) |
| Conference Information | |
| Committee | NLC / IPSJ-NL / SP / IPSJ-SLP |
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| Conference Date | 2019/12/4(3days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | NHK Science & Technology Research Labs. |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | The 6th Natural Language Processing Symposium & The 21th Spoken Language Symposium |
| Chair | Takeshi Sakaki(Hottolink) / / Hisashi Kawai(NICT) |
| Vice Chair | Mitsuo Yoshida(Toyohashi Univ. of Tech.) / Kazutaka Shimada(Kyushu Inst. of Tech.) / / Akinobu Ri(Nagoya Inst. of Tech.) |
| Secretary | Mitsuo Yoshida(Ryukoku Univ.) / Kazutaka Shimada(NTT) / / Akinobu Ri(Kyoto Univ.) / (Waseda Univ.) |
| Assistant | Takeshi Kobayakawa(NHK) / Hiroki Sakaji(Univ. of Tokyo) / / Tomoki Koriyama(Univ. of Tokyo) / Yusuke Ijima(NTT) |
| Paper Information | |
| Registration To | Technical Committee on Natural Language Understanding and Models of Communication / Special Interest Group on Natural Language / Technical Committee on Speech / Special Interest Group on Spoken Language Processing |
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| Language | ENG |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | [Poster Presentation] Estimation of three-dimensional tongue shape from midsagittal tongue contour using regression models |
| Sub Title (in English) | |
| Keyword(1) | tongue contourthree-dimensional MRI datalinear regressionrandom forest regressiondata-driven approach |
| 1st Author's Name | Tatsuya Kitamura |
| 1st Author's Affiliation | Konan University(Konan Univ.) |
| 2nd Author's Name | Hisanori Makinae |
| 2nd Author's Affiliation | National Research Institute of Police Science(NRIPS) |
| 3rd Author's Name | Masashi Ito |
| 3rd Author's Affiliation | Tohoku Institute of Technology(TIT) |
| Date | 2019-12-06 |
| Paper # | SP2019-40 |
| Volume (vol) | vol.119 |
| Number (no) | SP-321 |
| Page | pp.pp.67-72(SP), |
| #Pages | 6 |
| Date of Issue | 2019-11-29 (SP) |