2001 Fiscal Year Final Research Report Summary
Virtual 3D head model and efficient spatial operation interfaces
| Project/Area Number |
12480074
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
計算機科学
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| Research Institution | Hiroshima City University |
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Principal Investigator |
NAKAMURA Yasuaki Hiroshima City University, Professor, 情報科学部, 教授 (10264946)
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| Co-Investigator(Kenkyū-buntansha) |
KANNO Hiroshi Yokohama City University, Lecturer, 医学部, 講師 (40244496)
FURUKAWA Ryo Hiroshima City University, Assistant Professor, 情報科学部, 助手 (50295838)
UCHIDA Tomoyuki Hiroshima City University, Associate Professor, 情報科学部, 助教授 (70264934)
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| Project Period (FY) |
2000 – 2001
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| Keywords | 3D Model / Virtual Reality / Computer Graphics / Image Processing / Computer Tomography / Medical Imaging / Volume Graphics / Neurosurgery |
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| Research Abstract |
The conventional 3D objects are constructed with a large number of polygons. In our research, a solid 3D model of a human head is constructed from a set of CT or MRI images. The virtual surgery to the solid 3D head model is realized with a personal computer with a volume graphics hardware and a force feedback device called PHANToM. To fasten the rendering of the 3D solid model, a new algorithm for solid graphics was proposed and the performances of the algorithm was investigated by several experiments.
A new data structure, called PMD-tree, for efficient data management and fast retrieval was proposed. The PMD-tree can manage ajot of spatial objects as well as spatial temporal objects in a 3D space efficiently. The experimental results showed the efficiencies of the PMD-tree. The PMD-tree provides the functions to check an intersection of objects quickly that is required for drilling and cutting a virtual head model.
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