Proceedings International Conference on Shape Modeling and Applications最新文献_第3页

Subdivision-curve primitives: a new solution for interactive implicit modeling 细分曲线原语:一种交互式隐式建模的新方法

Proceedings International Conference on Shape Modeling and Applications Pub Date : 2001-05-07 DOI: 10.1109/SMA.2001.923378

Marie-Paule Cani, S. Hornus

引用次数: 36

Constant-time neighbor finding in hierarchical tetrahedral meshes 分层四面体网格的恒时邻居查找

Proceedings International Conference on Shape Modeling and Applications Pub Date : 2001-05-07 DOI: 10.1109/SMA.2001.923400

M. Lee, H. Samet, L. Floriani

引用次数: 43

Turning the approximating Catmull-Clark subdivision scheme into a locally interpolating surface modeling tool 将近似的Catmull-Clark细分方案转化为局部插值曲面建模工具

Proceedings International Conference on Shape Modeling and Applications Pub Date : 2001-05-07 DOI: 10.1109/SMA.2001.923374

J. Claes, Koen Beets, F. Reeth, A. Iones, A. Krupkin

{"title":"Turning the approximating Catmull-Clark subdivision scheme into a locally interpolating surface modeling tool","authors":"J. Claes, Koen Beets, F. Reeth, A. Iones, A. Krupkin","doi":"10.1109/SMA.2001.923374","DOIUrl":"https://doi.org/10.1109/SMA.2001.923374","url":null,"abstract":"Recursive subdivision schemes have become one of the most important paradigms to model 3D surfaces of arbitrary topology used in computer graphics applications. A number of researchers, both with a mathematical background and from the computer graphics community, have added-and still are adding-different algorithms and features to further improve their capabilities. This paper describes a new modeling tool, providing the possibility to locally choose an interpolating variant of the conventionally approximating Catmull-Clark (1978) subdivision scheme. Our approach combines the advantages of approximating schemes with the precise control of interpolating schemes. Unlike other solutions that mostly narrow down to locally change the weighting factors of the subdivision scheme, we keep the underlying uniform scheme intact. Our method is based upon introducing additional control points on well-chosen locations, with optional interactive user control over the tangent plane (or surface normal) and the tension of the surface near the interpolating control points. Although this paper is concentrating on the Catmull-Clark scheme, the proposed techniques can be extended to other subdivision schemes.","PeriodicalId":247602,"journal":{"name":"Proceedings International Conference on Shape Modeling and Applications","volume":"C-23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126478608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 4

Interpolating implicit surfaces from scattered surface data using compactly supported radial basis functions 利用紧支持的径向基函数从分散的表面数据插值隐式曲面

Proceedings International Conference on Shape Modeling and Applications Pub Date : 2001-05-07 DOI: 10.1109/SMA.2001.923379

B. Morse, T. Yoo, P. Rheingans, David T. Chen, K. Subramanian

{"title":"Interpolating implicit surfaces from scattered surface data using compactly supported radial basis functions","authors":"B. Morse, T. Yoo, P. Rheingans, David T. Chen, K. Subramanian","doi":"10.1109/SMA.2001.923379","DOIUrl":"https://doi.org/10.1109/SMA.2001.923379","url":null,"abstract":"Describes algebraic methods for creating implicit surfaces using linear combinations of radial basis interpolants to form complex models from scattered surface points. Shapes with arbitrary topology are easily represented without the usual interpolation or aliasing errors arising from discrete sampling. These methods were first applied to implicit surfaces by V.V. Savchenko, et al. (1995) and later developed independently by G. Turk and J.F. O'Brien (1998) as a means of performing shape interpolation. Earlier approaches were limited as a modeling mechanism because of the order of the computational complexity involved. We explore and extend these implicit interpolating methods to make them suitable for systems of large numbers of scattered surface points by using compactly supported radial basis interpolants. The use of compactly supported elements generates a sparse solution space, reducing the computational complexity and making the technique practical for large models. The local nature of compactly supported radial basis functions permits the use of computational techniques and data structures such as k-d trees for spatial subdivision, promoting fast solvers and methods to divide and conquer many of the subproblems associated with these methods. Moreover, the representation of complex models permits the exploration of diverse surface geometry. This reduction in computational complexity enables the application of these methods to the study of the shape properties of large, complex shapes.","PeriodicalId":247602,"journal":{"name":"Proceedings International Conference on Shape Modeling and Applications","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116790923","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 429

Mesh simplification using four-face clusters 使用四面聚类简化网格

Proceedings International Conference on Shape Modeling and Applications Pub Date : 2001-05-07 DOI: 10.1109/SMA.2001.923391

L. Velho

引用次数: 25

Fairing recursive subdivision surfaces with curve interpolation constraints 具有曲线插值约束的整流罩递归细分曲面

Proceedings International Conference on Shape Modeling and Applications Pub Date : 2001-05-07 DOI: 10.1109/SMA.2001.923375

A. Nasri, Tae-wan Kim, Kunwoo Lee

引用次数: 7

Dynamic meshes for accurate polygonization of implicit surfaces with sharp features 具有尖锐特征的隐式曲面的精确多边形化的动态网格

Proceedings International Conference on Shape Modeling and Applications Pub Date : 2001-05-07 DOI: 10.1109/SMA.2001.923377

Y. Ohtake, A. Belyaev, A. Pasko

引用次数: 55

Marching intersections: an efficient resampling algorithm for surface management 行进路口:一种有效的曲面管理重采样算法

Proceedings International Conference on Shape Modeling and Applications Pub Date : 2001-05-07 DOI: 10.1109/SMA.2001.923401

C. Rocchini, Paolo Cignoni, F. Ganovelli, C. Montani, P. Pingi, Roberto Scopigno

引用次数: 43

Parameterization of freeform features 自由形状特征的参数化

Proceedings International Conference on Shape Modeling and Applications Pub Date : 2001-05-07 DOI: 10.1109/SMA.2001.923371

J. Vergeest, I. Horváth, S. Spanjaard

引用次数: 43

Fast navigation through an FRep sculpture garden 快速导航通过一个FRep雕塑花园

Proceedings International Conference on Shape Modeling and Applications Pub Date : 2001-05-07 DOI: 10.1109/SMA.2001.923381

M. Kazakov, A. Pasko, V. Adzhiev

{"title":"Fast navigation through an FRep sculpture garden","authors":"M. Kazakov, A. Pasko, V. Adzhiev","doi":"10.1109/SMA.2001.923381","DOIUrl":"https://doi.org/10.1109/SMA.2001.923381","url":null,"abstract":"Function representation (FRep) allows for the construction of quite complex shapes, such as isosurfaces of real-valued functions composed using functionally defined primitives and operations. Calculating such functions in complex cases can be very time-consuming. Interactive extraction and visualization of isosurfaces for them can hardly be imagined. In this paper, we present a method for interactive navigation through a \"sculpture garden\" containing non-intersecting FRep objects defined in terms of the specialized high-level language HyperFun. Before the actual isosurface extraction and visualization occurs, the objects are voxelized on a regular 3D grid with the possibility of further adaptive voxelization. The polygonization employs a hierarchical representation of the voxelized data and a view-dependent isosurface reconstruction at different levels of detail. To speed up the extraction process, an isosurface is constructed only in the visible part of the data set, with its updates performed incrementally as the observer moves. Due to the low pre-processing costs required for isosurface mesh construction, it is possible to visualize time-dependent objects, if the hardware is capable of calculating the updates in real time.","PeriodicalId":247602,"journal":{"name":"Proceedings International Conference on Shape Modeling and Applications","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125061321","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7