舞踏符自動生成のための自己組織化マップによる動作の分割化

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We have proposed a human motion description method using a Buyo-fu(dancing note) in order to reuse motion datacaptured by a motion capturing system. The Buyo-fu can give us an efficient support for archiving and learning traditionaldances. The motion of a dance can be segmented into some motion primitives, and we define a Buyo-fu as a code that isassigned to each motion primitive. Since we have been making a Buyo-fu manually so far, there exists a problem thatmaking a Buyo-fu requires not only much cost but also an expert knowledge about the dance.In this report, we propose a method to segment human motion data into some motion primitives in order to make aBuyo-fu automatically. We consider that human motion data consist of a series of human postures and that a motionprimitive is a segment which consists of a series of human postures having similar characteristics to each other. Accordingto these considerations, we discussed a method to segment human motion data into motion primitives by clusteringpostures. As a result, we have developed a clustering method for segmentation by using a modified self-organizingmap(SOM) that can treat a time-series of data.We made an experiment on a Japanese folk dance whose name is “Nishimonai Ganke”, and we confirmed that ourproposed method could be used to make a Buyo-fu automatically.Aluminum alloys are one of the most widely used structural materials because of their good mechanicalproperties. Recently, however, more high strength and more high creep resistant materials are required in industrysuch as air space industry. The aim of this work is to develop a new high strength Al-base eutectic casting alloymade by commercial foundry technique. As an example, an Al-12.7 mass% Ce-5.5 mass% Ni-0.56 mass% Zr alloywas adopted for age hardening cast alloy, on which the age hardening behavior was studied and the hardeningmechanism was discussed. The alloy showed clear age hardening behavior and the hardeness reached a peak value of108.6 Hv for aging of 500 h at 573 K, which was about two times higher than that of as-cast state in the Al-12mass% Ce-5 mass% Ni eutectic cast alloy. The hardening mechanism was presumed to be due to Al3Zrprecipitation in the Al matrix phase. Finally, the Al-12.7 mass%Ce-5.5 mass% Ni-0.56 mass% Zr alloywas concluded to be a good candidate for new Al-base structural materials.
秋田大学の論文

舞踏符自動生成のための自己組織化マップによる動作の分割化

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