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Development of a computerized system for three-dimensional shape reconstruction

Research Project

Project/Area Number 14204082
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field 人類学(含生理人類学)
Research InstitutionUniversity of Shiga Prefecture (2003)
Kyoto University (2002)

Principal Investigator

ISHIDA Hidemi  University of Shiga Prefecture, Human Nursing, Professor, 人間看護学部, 教授 (60027480)

Co-Investigator(Kenkyū-buntansha) ITAMI Kimiwa  University of Shiga Prefecture, Human Nursing, Lecturer, 人間看護学部, 講師 (30310626)
OGIHARA Naomithi  Kyoto University, Graduate School of Science, Assistant, 大学院・理学研究科, 助手 (70324605)
NAKATUKASA Masato  Kyoto University, Graduate School of Science, Associate Professor, 大学院・理学研究科, 助教授 (00227828)
KURITA Yutaka  University of Shiga Prefecture, Institute of Technology, Professor, 工学部, 教授 (70275171)
KURUSHIMA Kimiko  University of Shiga Prefecture, Human Nursing, Assistant, 人間看護学部, 助手 (50310628)
山崎 信寿  慶應義塾大学, 理工学部, 教授 (70101996)
堤 定美  京都大学, 再生医科学研究所, 教授 (00028739)
国松 豊  京都大学, 霊長類研究所, 助手 (80243111)
Project Period (FY) 2002 – 2003
Project Status Completed (Fiscal Year 2003)
Budget Amount *help
¥23,790,000 (Direct Cost: ¥18,300,000、Indirect Cost: ¥5,490,000)
Fiscal Year 2003: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2002: ¥20,020,000 (Direct Cost: ¥15,400,000、Indirect Cost: ¥4,620,000)
Keywordstaphonomic deformation / reconstruction / 3-dimesional measurements / mathematical algorithm / thin-plate spline function / 3-dimesional reconstruction / anthropology / archaeology / 化石 / 3次元形状 / 光造形 / 形状修復 / X線CTスキャナ
Research Abstract

A computer-assisted system to virtually reconstruct original shapes of fossil specimens subjected to taphonomic deformation is developed. This system contains a newly designed algorithm to mathematically reverse non-homogeneous deformation of originally a symmetrical fossil, such as skull, based on its geometrical constraints.
In a bisymmetrical bone, all anatomical landmarks on its mid-sagittal plane should be included in the same plane. In addition, each of bilateral pairs of landmarks should form a segment connecting the pair that intersects with the plane at right angle in its midpoint. However, if such a bilateral bone is deformed due to diagenesis during its fossilization, those geometrical constraints will no longer be maintained. In the present method, therefore, coordinates of all landmarks are firstly transferred so as to fulfill those geometrical conditions. Then, the entire shape of the fossil is transformed according to the movements of the landmarks for reversal of deformation, using a thin-plate spline function.
The proposed methodology is applied for reconstructing the original shape of the deformed skull of Proconsul heseloni. In the present study, the volume of the fossil is extracted from the CT-scan images, and the surface is approximated by very tiny triangles to three-dimensionally represent its shape in a computer. Using the system, the reconstructed shape of the skull can be observed, manipulated, and measured. Moreover, a replica of the result can be created by stereolithography for evaluation of the reconstruction.
Although the reconstruction is still incomplete due to inherent lack of information that can be extracted from the fossil for reversal of deformation, results indicate efficacy of the proposed computerized system for advanced morphometrical and biomechanical studies of fossil skulls.

Report

(3 results)
  • 2003 Annual Research Report   Final Research Report Summary
  • 2002 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] H.Ishida, Y.Kunimatsu, T.Takano, Y.Nakano, M.Nakatsukasa: "Nacholapithecus skeleton from the Middle Miocene of Kenya"Journal of Human Evolution. 46. 69-103 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 荻原直道, 中務真人, 中野良彦, 石田英實: "プロコンスル頭蓋骨の3次元形態モデリング"霊長類研究. 19. 217-227 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 荻原直道, 山中敦之, 中務真人, 石田英實: "有限要素法を用いた霊長類肩甲骨の機能形態学的分析"霊長類研究. 19. 203-215 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] M.Nakatsukasa, Y.Kunimatsu, Y.Nakano, T.Takano, H.Ishida: "Comparative and functional anatomy of phalanges in Nachorlapithecus kerioi, a Middle Miocene hominoid from northern Kenya"Primates. 44. 371-412 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] 中務真人, 荻原直道: "自然人類学研究I、石田英実教授退官記念論文集"金星舎. 142 (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] 荻原直道, 樫村裕也, 石田英實: "ヒトの垂直立位の姿勢安定性-類人猿型屈曲立位との比較-"霊長類研究. 19(印刷中). (2003)

    • Related Report
      2002 Annual Research Report
  • [Publications] Nakatsukasa, M., Kunimatsu, Y., Nakano, Y., Ishida, H.: "Morphology of the hallucial phalanges in extant anthropoids and fossil hominoids"Zeitschrift fur Morphologie und Anthropologie. 83. 361-372 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 荻原直道, 山崎信寿: "運動のし易さの脳内表現とその自己組織化"バイオメカニズム. 16. 275-284 (2002)

    • Related Report
      2002 Annual Research Report

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Published: 2002-04-01   Modified: 2016-04-21  

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