Proceedings Shape Modeling Applications, 2004.

7-9 June 2004

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  • Proceedings Shape Modeling International 2004

    Publication Year: 2004, Page(s): 0_1
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  • Proceedings. Shape Modeling International 2004 (IEEE Cat. No.04PR2075)

    Publication Year: 2004
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  • [Blank page]

    Publication Year: 2004, Page(s): ii
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  • Proceedings Shape Modeling International 2004

    Publication Year: 2004, Page(s): iii
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  • Copyright page

    Publication Year: 2004, Page(s): iv
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  • Table of contents

    Publication Year: 2004, Page(s):v - ix
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  • Preface

    Publication Year: 2004, Page(s): x
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  • Conference committees

    Publication Year: 2004, Page(s): xi
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  • Program Committee

    Publication Year: 2004, Page(s): xii
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  • Reviewers

    Publication Year: 2004, Page(s): xiii
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  • Dynamic body transformation and matching from scanned data

    Publication Year: 2004
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (187 KB) | HTML iconHTML

    Summary form only given. Appropriate combinations of statistical and geometric methods permit modeling and estimation of complex objects. This paper investigates such combinations in the modeling of human body models in computer graphics. By concentrating on such a particular class of objects, we show how example based techniques together with interpolation ones can exploit existing data and knowl... View full abstract»

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  • A hybrid shape representation for free-form modeling

    Publication Year: 2004, Page(s):7 - 18
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1284 KB) | HTML iconHTML

    We introduce a hybrid modeling framework for creating complex objects. Our system relies on an extended CSG tree that assembles skeletal implicit surfaces and polygonal meshes in a coherent fashion: we call this structure the hybridtree. Editing operations are performed by exploiting the complementary abilities of both implicit and parametric surface representations. Implicit surfaces are powerful... View full abstract»

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  • Multi-scale reconstruction of implicit surfaces with attributes from large unorganized point sets

    Publication Year: 2004, Page(s):19 - 30
    Cited by:  Papers (21)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1115 KB) | HTML iconHTML

    We present a new method for the multi-scale reconstruction of implicit surfaces with attributes from large unorganized point sets. The implicit surface is reconstructed by subdividing the global domain into overlapping local subdomains using a perfectly balanced binary tree, reconstructing the surface parts in the local subdomains from non-disjunct subsets of the points by variational techniques u... View full abstract»

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  • 3D scattered data approximation with adaptive compactly supported radial basis functions

    Publication Year: 2004, Page(s):31 - 39
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1538 KB) | HTML iconHTML

    We develop an adaptive RBF fitting procedure for a high quality approximation of a set of points scattered over a piecewise smooth surface. We use compactly supported RBFs whose centers are randomly chosen from the points. The randomness is controlled by the point density and surface geometry. For each RBF, its support size is chosen adoptively according to surface geometry at a vicinity of the RB... View full abstract»

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  • Fitting and manipulating freeform shapes by extendable freeform templates

    Publication Year: 2004, Page(s):43 - 52
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (869 KB) | HTML iconHTML

    Finding effective and efficient methods to fit and manipulate an existing freeform shape is one of the state-of-the-art topics in computer-aided design. Although general approaches give satisfied results, the computation time and the complexity often prevent their further developments in more complex cases especially in reusing an existing design. In this paper, for a better control of existing fr... View full abstract»

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  • Multi-minimisations for shape control of fully free-form deformation features (/spl delta/-F/sup 4/)

    Publication Year: 2004, Page(s):53 - 62
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (644 KB) | HTML iconHTML

    Fully free form deformation features (/spl delta/-F/sup 4/) have been proposed to overcome the limits of low-level manipulations of free form surfaces. They correspond to shapes obtained by deformation of a surface part according to geometric constraints. In our approach, a /spl delta/-F/sup 4/ is a result of the indirect manipulation of external forces applied to the nodes of a bar network couple... View full abstract»

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  • Sweepers: swept user-defined tools for modeling by deformation

    Publication Year: 2004, Page(s):63 - 73
    Cited by:  Papers (7)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1245 KB) | HTML iconHTML

    We present Sweepers, a new class of space deformations suitable for interactive virtual sculpture. The artist describes a basic deformation as a path through which a tool is moved. Our tools are simply shapes, subsets of 3D space. So we can use shapes already created as customized tools to make more complex shapes or to simplify the modeling process. When a tool is moved it causes a deformation of... View full abstract»

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  • Computing planar sections of surfaces of revolution with revolute quadric decomposition

    Publication Year: 2004, Page(s):77 - 86
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (501 KB) | HTML iconHTML

    Computing the planar sections of objects is a fundamental operation in solid modeling. Subdivision method is commonly used for solving such intersection problems. In this paper, a revolute quadric decomposition is proposed for surfaces of revolution, which are subdivided into a set of coaxial revolute quadrics along the generatrix. This reduces the intersection problem of a plane and a surface of ... View full abstract»

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  • Nonlinear polynomial systems: multiple roots and their multiplicities

    Publication Year: 2004, Page(s):87 - 98
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (399 KB) | HTML iconHTML

    We present methods for the computation of roots of univariate and bivariate nonlinear polynomial systems as well as the identification of their multiplicity. We first present an algorithm, called the TDB algorithm, which computes the values and the multiplicities of roots of a univariate polynomial. The procedure is based on the concept of the degree of a certain Gauss map, which is deduced from t... View full abstract»

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  • Polygonal decomposition of the 1-ring neighborhood of the Catmull-Clark scheme

    Publication Year: 2004, Page(s):101 - 109
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (489 KB) | HTML iconHTML

    We propose a polygonal decomposition of the 1-ring neighborhood of a quadrilateral mesh, which is suitable for the study of the Catmull-Clark subdivision scheme. The initial configuration consists of 2n planar 2n-gons and under the Catmull-Clark subdivision they transform into 4n planar n-gons coming in pairs of coplanar polygons and quadruples of parallel polygons. We calculate the eigenvalues an... View full abstract»

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  • Semiregular pentagonal subdivisions

    Publication Year: 2004, Page(s):110 - 118
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1145 KB) | HTML iconHTML

    Triangular and quadrilateral meshes are commonly used in computer graphics applications. We analyze the topological existence of meshes that consist of n-sided faces where n is greater than 4 such as pentagonal and hexagonal meshes. We show that it is possible to represent any 2-manifold with a mesh that is made up of only pentagons. We also show that the meshes that consist of only polygons with ... View full abstract»

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  • Detail-preserving variational surface design with multiresolution constraints

    Publication Year: 2004, Page(s):119 - 128
    Cited by:  Papers (4)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1049 KB) | HTML iconHTML

    We present a variational framework for rapid shape prototyping. The modeled shape is represented as a Catmull-Clark multiresolution subdivision surface which is interactively deformed by direct user input. Free-form design goals are formulated as constraints on the shape and the modeling problem is cast into a constrained optimization one. The focus of this paper is on handling multiresolution con... View full abstract»

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  • Surface quality assessment of subdivision surfaces on programmable graphics hardware

    Publication Year: 2004, Page(s):129 - 138
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1317 KB) | HTML iconHTML

    We propose a method of subdivision surface quality assessment by reflection lines on programmable graphics hardware (GPU). Using reflection lines is effective for surface quality assessment because the shapes of these lines are changed according to a slight variance of surface shapes. This fact also implies that reflection lines should be calculated precisely. We introduce an intuitive, fast and r... View full abstract»

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  • A generative theory of shape

    Publication Year: 2004, Page(s): 141
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (186 KB) | HTML iconHTML

    This talk gives an introduction to my book, A Generative Theory of Shape (Springer-Verlag, 550pages). The purpose of the book is to develop a generative theory of shape that has two properties regarded as fundamental to intelligence - maximizing transfer of structure and maximizing recoverability of the generative operations. These two properties are particularly important in the representation of... View full abstract»

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  • A survey of content based 3D shape retrieval methods

    Publication Year: 2004, Page(s):145 - 156
    Cited by:  Papers (147)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (474 KB) | HTML iconHTML

    Recent developments in techniques for modeling, digitizing and visualizing 3D shapes has led to an explosion in the number of available 3D models on the Internet and in domain-specific databases. This has led to the development of 3D shape retrieval systems that, given a query object, retrieve similar 3D objects. For visualization, 3D shapes are often represented as a surface, in particular polygo... View full abstract»

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