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Generating 3-D Models of Human Motions by Motion Capture

  • Yamaguchi, I.;Tou, K.;Tan, J.K.;Ishikawa, S.;Naito, T.;Yokota, M.
    • 제어로봇시스템학회:학술대회논문집
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    • 2003.10a
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    • pp.1629-1632
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    • 2003

  • A technique is presented for generating a compound human motion from its primitive motions obtained by a motion capture system. Some human fundamental motions are modeled in a 3-D way and registered as primitive motions. Because the factorization method is used for the motion capture, calibration of video cameras and connection of the motion in the direction of time is both unnecessary. Employing these motions, various compound human motions are generated by connecting the motions after having applied rotation and parallel transformation to them. Linear interpolation is done at the discontinuous boundary between primitive motions and smooth connection is achieved. Experimental results show satisfactory performance of the proposed technique. The technique may contribute to producing various complicated human motions without much effort using a strict motion capture system.

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ULTRASTRUCTURAL COMPARISON OF BOVINE BLASTOCYSTS DEVELOPED IN VIVO AND IN VITRO

  • Ohboshi, S.;Nakamichi, R.;Hanada, K.;Zhao, J.;Hattori, M.;Fujihara, N.;Umetsu, R.
    • Asian-Australasian Journal of Animal Sciences
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    • v.8 no.6
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    • pp.599-605
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    • 1995

  • The ultrastructures of in vitro-derived bovine blastocysts have been compared with those of blastocysts obtained from a superovulated cow. In vivo blastocysts obtained from the uterus showed well-differentiated features, while in vitro-derived embryos, which were developed from in vitro fertilized ovum, showed insufficient cellular organizations. In vitro-derived embryos contained many undefined cellular organizations in the perivitelline spaces compared with in vivo-derived blastocysts. Other features of in vivo and in vitro blastocysts were characterized by differential development of microvilli projection into blastocoele from the surface of the trophoblast cells. The conceivable reason for the difference between in vivo and in vitro developments of bovine embryos is that it is likely that in vitro culture system adopted in the present experiment may not be sufficient for better embryonic development.

  • https://doi.org/10.5713/ajas.1995.599 인용 PDF