2024-03-29T05:06:00Zhttps://ipsj.ixsq.nii.ac.jp/ej/?action=repository_oaipmhoai:ipsj.ixsq.nii.ac.jp:000528242023-04-27T10:00:04Z01164:04619:04662:04666
SAIによる3次元形状操作3D Shape Manipulation by Using Spherical Attribute Imagejpnhttp://id.nii.ac.jp/1001/00052824/Technical Reporthttps://ipsj.ixsq.nii.ac.jp/ej/?action=repository_action_common_download&item_id=52824&item_no=1&attribute_id=1&file_no=1Copyright (c) 2001 by the Information Processing Society of Japan東京大学情報理工学系研究科東京大学生産技術研究所増田, 智仁池内, 克史本論文では、レーザーレンジファインダーなどで得られた物体表面の3次元点列データをdeformable surface で近似し、deformable surface の各頂点において、曲率の一種でメッシュ面から安定に計算できるsimplex angle を求め、それを球面に投影し、物体形状をSAI(spherical attribute image) として表象する手法について述べる。さらにこの SAI から deformable surface へ可逆的に復元できることを示し、二つの物体の SAI を線形補間して得られる中間 SAI からそれらの中間形状を生成できることを述べる。In this paper, we propose to represent the object shape as its spherical attribute image (SAI), which is obtained from its mesh approximating its surface: First, a range of 3D points of the object surface, measured by a laser range finder, is approximated by using adeformable surface. At each vertex of the deformable surface, a simplex angle, a class of surface curvature, is calculated and then mapped to a corresponding surface point on a unit sphere. The resulting spherical representation is referred to as an ASI of the object. This SAi is a convenient tool to examine the congruence among objects. We can also inversely reconstruct an original shape from a given SAI. By using this inverse mapping, we can construct intermediate shapes between two objects through interpolating SAI. We have implemented these manipulation processes, and verified the effectiveness of SAIs for shape manipulation.AA11131797情報処理学会研究報告コンピュータビジョンとイメージメディア(CVIM)200136(2001-CVIM-127)59652001-05-102009-06-30