计算机科学 ›› 2015, Vol. 42 ›› Issue (2): 277-279.doi: 10.11896/j.issn.1002-137X.2015.02.058
朱新懿,耿国华
ZHU Xin-yi and GENG Guo-hua
摘要： 对称是自然界大多数模型具有的一种特征属性。针对三维模型坐标归一化过程中模型的对齐问题,提出了一种结合局部对称的三维模型对齐方法。通过三维模型的CPCA坐标轴确立其初始姿态,提出局部对称长度比来度量三维模型的局部对称性。以此为依据将三维模型分成两类,对于具有大于或等于2个局部对称平面的三维模型,利用最大局部对称长度比来确立最终姿态；对于仅有1个或没有局部对称平面的三维模型,通过面积替换质量,将模型达到力矩平衡时的姿态确立为最终姿态。算法既考虑到了模型的对称性质,又考虑了非对称模型的处理。实验结果显示了算法的有效性。
| [1] Vranic＇ D.3D model retrieval[D].Leipzig:University of Leipzig,2004 [2] Vranic＇ D,Saupe D.3D model retrieval[C] ∥Spring Conference on Computer Graphics and its Applications (SCCG2000).ACM,2000:89-93 [3] Chaouch M,Verroust-Blondet A.Alignment of 3D models[J].Graphical Model,2009,71:63-76 [4] 万丽莉.一种结合法线分布特征的三维模型旋转归一化方法[J].计算机辅助设计与图形学学报,2008,20(6):683-688 [5] Johan H,Li Bo,Wei Yuan-min,et al.3D model alignment based on minimum projection area[J].The Visual Computer,2011,27(6-8):565-574 [6] Joshua P,Philip S,Aleksey G,et al.A planar-reflective symmetry transform for 3D shapes[C]∥Proceedings of ACM SIGGRAPH 2006.ACM,2006:549-559 [7] Michael K,Thomas F,Szymon R.Symmetry descriptors and 3Dshape matching[C]∥Eurographics Symposium on Geometry Processing.ACM,2004:156-166 [8] Kazhdan M,Chazelle B,Dobkin D,et al.A reflective symmetry descriptor for 3D models[J].Algorithmica,2004,38(1):201-225 [9] Sfikas K,Theoharis T,Pratikakis I.ROSy+:3D Object PoseNormalization Based on PCA and Reflective Object Symmetry with Application in 3D Object Retrieval[J].International Journal of Computer Vision,2011,91(3):262-279 [10] Axenopoulos A,Litos G,Daras P.3D model retrieval using accurate pose estimation and view-based similarity[C]∥Proceedings of the 1st ACM International Conference on Multimedia Retrieval.ACM,2011:1-8 [11] Thompson D W.On Growth and Form[M].England:Cambridge University Press,1961 [12] Minovic P,Ishikawa S,Kato K.Symmetry identification of a 3-D object represented by octree[J].Pattern Analysis and Machine Intelligence,1993,15(5):507-514 [13] Princeton Shape Retrieval and Analysis Group.Princeton Shape Benchmark[DB/OL].2005-3-15.http://shape.cs.princeton.edu/benchmark [14] Osada R,Funkhouser T,Chazelle B,et al.Shape distributions[J].ACM Transaction on Graphics,2002,21(4):807-832 |
| No related articles found! |
|
||
首页