著者

稲本 万里子 加藤 拓也 小長谷 明彦

出版者

一般社団法人 人工知能学会

雑誌

人工知能学会論文誌 (ISSN:13460714)

巻号頁・発行日

vol.36, no.6, pp.F-L12_1-16, 2021-11-01 (Released:2021-11-01)

参考文献数

14

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”Phantom Genji Scrolls ”are one of the most debatable artifacts whose painter school is still unknown in the history of art. In this study, the authors have reached a conclusion that the Phantom Genji Scrolls would have been painted by the painters who studied Kyoto-Kano and Tosa painter schools but not Edo-Kano painter school.As a learning data set, more than 1500 face images are extracted from well-known the Tale of Genji pictures painted from Heian (12 Century) to Edo (17 Century) periods whose painter schools are all established in the history of art. The face images are written in typical old painting style so called“line-eye and hook nose (hikime-kagihana)” which often represents the characteristics of the painter schools.The authors not only identified the painter school of the Phantom Genji Scrolls but also discovered the inconsistency in Iwasa painter school by means of artifact-based painter school learning model. The t-SNE scatter plots clearly indicated that the 266 face images extracted from the Phantom Genji Scrolls were surrounded by the Kyoto- Kano painter school learning data sets. It should be also noted that the 266 face images were far from the learning data set of Ujinobu Kano, one of the typical Edo-Kano painter. Interestingly, the Phantom Genji Scrolls and Ujinobu Kano were intercepted by Mitsuyoshi Tosa, one of the typical Tosa painter in scatter plot. This suggests that the painters of the Phantom Genji Scrolls may have been affected by both Kyoto-Kano and Tosa painter schools, instead of Edo-Kano painter school.As for the Iwasa painter school, the authors came across strange behavior that the artifacts of Katsutomo Iwasa were identified as the Tosa painter school, even if the validation data of Katsutomo Iwasa were all included in the learning data set of Iwasa painter school, mostly constituted by Katsutomo Iwasa (244 face images). After careful observation and discussion, the authors have concluded that Matabei Iwasa and Kastutomo Iwasa may be too different to be categorized into the same Iwasa painter school with regards to face characteristics.

著者

大場 健裕 小野 良輔 榊 善成 加藤 拓也 太田 萌香 藤岡 祥平 佐々木 和広 倉 秀治

出版者

一般社団法人 日本スポーツ理学療法学会

雑誌

スポーツ理学療法学 (ISSN:27584356)

巻号頁・発行日

vol.1, no.1, pp.13-20, 2023-03-23 (Released:2023-03-23)

参考文献数

34

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【目的】人工靭帯による内側膝蓋大腿靭帯再建術(以下MPFLR)および脛骨粗面移行術(TTO)を併用した症例(以下MPFLR+TTO)における膝伸展筋力の特徴を明らかにすること。【方法】MPFLR群15名,MPFLR+TTO群11名を対象に,最終フォローアップ時(MPFL群22.8±15.6ヶ月;MPFL+TTO群22.8±9.6ヶ月)の等尺性膝伸展筋力を,膝関節90度及び30度で測定し,健患差および健患比を検証した。【結果】MPFLR群では,術側と非術側の間に等尺性膝伸展筋力の有意差はみられなかった。MPFLR+TTO群では,術側が非術側と比較して,有意に低い等尺性膝伸展筋力を示した。健患比は,MPFLR+TTO群がMPFLR群と比較して有意に低値を示した。【結論】人工靭帯によるMPFLRは,良好な膝伸展筋力の回復が得られる。一方で,TTOを併用した場合,膝伸展筋力の健患差が残存し,単独MPFLRと比較して術後の筋力回復が得られにくいことが示唆された。

著者

稲本 万里子 加藤 拓也 小長谷 明彦

出版者

一般社団法人 人工知能学会

雑誌

人工知能学会論文誌 (ISSN:13460714)

巻号頁・発行日

vol.36, no.6, pp.F-L12_1-16, 2021

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<p>"Phantom Genji Scrolls "are one of the most debatable artifacts whose painter school is still unknown in the history of art. In this study, the authors have reached a conclusion that the Phantom Genji Scrolls would have been painted by the painters who studied Kyoto-Kano and Tosa painter schools but not Edo-Kano painter school.</p><p>As a learning data set, more than 1500 face images are extracted from well-known the Tale of Genji pictures painted from Heian (12 Century) to Edo (17 Century) periods whose painter schools are all established in the history of art. The face images are written in typical old painting style so called"line-eye and hook nose (hikime-kagihana)" which often represents the characteristics of the painter schools.</p><p>The authors not only identified the painter school of the Phantom Genji Scrolls but also discovered the inconsistency in Iwasa painter school by means of artifact-based painter school learning model. The t-SNE scatter plots clearly indicated that the 266 face images extracted from the Phantom Genji Scrolls were surrounded by the Kyoto- Kano painter school learning data sets. It should be also noted that the 266 face images were far from the learning data set of Ujinobu Kano, one of the typical Edo-Kano painter. Interestingly, the Phantom Genji Scrolls and Ujinobu Kano were intercepted by Mitsuyoshi Tosa, one of the typical Tosa painter in scatter plot. This suggests that the painters of the Phantom Genji Scrolls may have been affected by both Kyoto-Kano and Tosa painter schools, instead of Edo-Kano painter school.</p><p>As for the Iwasa painter school, the authors came across strange behavior that the artifacts of Katsutomo Iwasa were identified as the Tosa painter school, even if the validation data of Katsutomo Iwasa were all included in the learning data set of Iwasa painter school, mostly constituted by Katsutomo Iwasa (244 face images). After careful observation and discussion, the authors have concluded that Matabei Iwasa and Kastutomo Iwasa may be too different to be categorized into the same Iwasa painter school with regards to face characteristics.</p>

著者

加藤 拓也 稲本 万里子 小長谷 明彦

出版者

一般社団法人 人工知能学会

雑誌

人工知能学会全国大会論文集 第32回全国大会(2018)

巻号頁・発行日

pp.2D105, 2018 (Released:2018-07-30)

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源氏絵とは,『源氏物語』を題材とした絵画の総称である.源氏絵の絵師には土佐派をはじめ狩野派,岩佐派,など多数の流派があり,各流派独自の個性がある.これまでに見つかった作品にはどの流派の絵師が描いたかわからないものがあり,美術史の専門家たち中でも意見が分かれている.そのため新たな知見から流派を判断する手法が望まれる.近年,深層学習の一種である畳み込みニューラルネットワークの画像分類能力の向上は著しく,一部の分野では人間よりも高いという報告もある.深層学習では特徴量がデータから学習されるため,これまで人間が発見していない特徴量に基づく分類をすることが期待できる.本稿では,深層学習による物体検出手法を用いて顔を自動認識し,畳み込みニューラルネットワークにより流派を推定する.5分割交叉検証を行った結果,96.5%の精度で分類することに成功した.

著者

加藤 拓也 谷口 圭吾 池田 祐真 本村 遼介 片寄 正樹

出版者

日本基礎理学療法学会

雑誌

日本基礎理学療法学雑誌 (ISSN:21860742)

巻号頁・発行日

vol.19, no.2, pp.65-71, 2016-08-03 (Released:2018-09-28)

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The purpose of this study was to determine the relationship between the neuromuscular activation patterns of hip adductor longus (AL), adductor magnus (AM) and hip joint angle during isokinetic hip flexion and extension. For 9 healthy men, surface electromyography was recorded at adductor longus, adductor magnus, rectus femoris, biceps femoris, semitendinosus muscles during isokinetic hip flexion and extension by three different velocities: 60 deg/sec, 90 deg/sec and 120 deg/sec, respectively. The normalized root mean square (RMS) of AL during hip flexion was significantly higher than that of the AL during hip extension. The normalized RMS of AL during hip flexion in 10°to 40°was significantly higher than that in 60° to 70° . The normalized RMS of AM during hip extension was significantly higher than that of the AM during hip flexion. These results suggest that AL is specifically recruited at the hip shallow flexed position of hip flexion and AM is recruited during hip extension.

著者

加藤 拓也 稲本 万里子 小長谷 明彦

出版者

人工知能学会

雑誌

2018年度人工知能学会全国大会(第32回)

巻号頁・発行日

2018-04-12

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源氏絵とは,『源氏物語』を題材とした絵画の総称である.源氏絵の絵師には土佐派をはじめ狩野派,岩佐派,など多数の流派があり,各流派独自の個性がある.これまでに見つかった作品にはどの流派の絵師が描いたかわからないものがあり,美術史の専門家たち中でも意見が分かれている.そのため新たな知見から流派を判断する手法が望まれる.近年,深層学習の一種である畳み込みニューラルネットワークの画像分類能力の向上は著しく,一部の分野では人間よりも高いという報告もある.深層学習では特徴量がデータから学習されるため,これまで人間が発見していない特徴量に基づく分類をすることが期待できる.本稿では,深層学習による物体検出手法を用いて顔を自動認識し,畳み込みニューラルネットワークにより流派を推定する.5分割交叉検証を行った結果,96.5%の精度で分類することに成功した.