Shape Modeling and Applications, 2007. SMI '07. IEEE International Conference on

13-15 June 2007

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  • IEEE International Conference on Shape Modeling and Applications 2007 - Cover

    Publication Year: 2007, Page(s): c1
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  • IEEE International Conference on Shape Modeling and Applications 2007 - Title

    Publication Year: 2007, Page(s):i - iii
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  • IEEE International Conference on Shape Modeling and Applications 2007 - Copyright

    Publication Year: 2007, Page(s): iv
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  • IEEE International Conference on Shape Modeling and Applications 2007 - Table of contents

    Publication Year: 2007, Page(s):v - vii
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  • Preface

    Publication Year: 2007, Page(s): viii
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  • Conference Committees

    Publication Year: 2007, Page(s): ix
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  • External reviewers

    Publication Year: 2007, Page(s): xi
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  • Sponsors

    Publication Year: 2007, Page(s): xii
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  • Multivariate Density-Based 3D Shape Descriptors

    Publication Year: 2007, Page(s):3 - 12
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (917 KB) | HTML iconHTML

    We address the 3D object retrieval problem using multivariate density-based shape descriptors. Considering the fusion of first and second order local surface information, we construct multivariate features up to five dimensions and process them by the kernel density estimation methodology to obtain descriptor vectors. We can compute these descriptors very efficiently using the fast Gauss transform... View full abstract»

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  • Augmented Symmetry Transforms

    Publication Year: 2007, Page(s):13 - 20
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (174 KB) | HTML iconHTML

    "Perfect symmetries are all alike; every imperfect symmetry is imperfect in its own way." - adapted from Leo Tolstoy's "Anna Karenina". Symmetry has been playing an increasing role in 3D shape processing. Recently introduced planar reflective symmetry transform(PRST) has been found useful for canonical coordinate frame determination, shape matching, retrieval, and segmentation. Guided by the intui... View full abstract»

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  • Adapting Geometric Attributes for Expression-Invariant 3D Face Recognition

    Publication Year: 2007, Page(s):21 - 32
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1042 KB) | HTML iconHTML

    We investigate the use of multiple intrinsic geometric attributes, including angles, geodesic distances, and curvatures, for 3D face recognition, where each face is represented by a triangle mesh, preprocessed to possess a uniform connectivity. As invariance to facial expressions holds the key to improving recognition performance, we propose to train for the component-wise weights to be applied to... View full abstract»

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  • Realistic Hair from a Sketch

    Publication Year: 2007, Page(s):33 - 42
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1943 KB) | HTML iconHTML

    This paper explores a sketch-based interface for quickly yet accurately creating visually realistic hair for virtual characters. Recently, physically-based models have proved successful for generating a wide variety of hair types, but they do not provide a straightforward method for designing target hairstyles. The contribution of this paper is to propose a user-friendly method for controlling suc... View full abstract»

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  • "Do Like Me", "Do Like This": Creating Animations by Teaching a Virtual Human

    Publication Year: 2007, Page(s):43 - 50
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1024 KB) | HTML iconHTML

    In this paper, we propose a new animation creation process, based on the teacher-student concept. You are the teacher and want to teach someone a performance. First you show the student how to perform an action, you tell him "do like me". Then you correct his posture by moving with hands his arms, his torso, feet position and so forth by saying to him "do like this". To show the virtual human a mo... View full abstract»

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  • Knowledge-based extraction of control skeletons for animation

    Publication Year: 2007, Page(s):51 - 60
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1086 KB) | HTML iconHTML

    In this paper we propose a method for the automatic extraction and annotation of the animation control skeleton of virtual humans, which relies on an a-priori knowledge of the human anatomy. The method is based on a segmentation of the virtual human shape into semantically meaningful features, like arms or legs, and on an automatic location and labeling of joints of the control skeleton. The metho... View full abstract»

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  • Hierarchical Spatial Hashing for Real-time Collision Detection

    Publication Year: 2007, Page(s):61 - 70
    Cited by:  Papers (15)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (779 KB) | HTML iconHTML

    We present a new, efficient and easy to use collision detection scheme for real-time collision detection between highly deformable tetrahedral models. Tetrahedral models are a common representation of volumetric meshes which are often used in physically based simulations, e.g. in Virtual surgery. In a deformable models environment collision detection usually is a performance bottleneck since the d... View full abstract»

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  • Deforming surface simplification based on dynamic geometry sampling

    Publication Year: 2007, Page(s):71 - 80
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1151 KB) | HTML iconHTML

    Although deforming surfaces are frequently used in numerous domains (scientific applications, games...), only few works have been proposed until now for simplifying such data. However, these time-varying surfaces are generally represented as oversampled triangular meshes with a static connectivity, involving a large number of unnecessary details for some frames. Among the related works, some metho... View full abstract»

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  • Polyhedral simplification preserving character lines extracted from images

    Publication Year: 2007, Page(s):81 - 90
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1779 KB) | HTML iconHTML

    Visualisation, assembling/disassembling simulation, reverse engineering, or finite element analyses are so many applications where a polyhedral simplification can be mandatory. In most of the configurations, such an operation must preserve the significant shapes of the original model. This paper addresses the way these simplifications can be performed while preserving character lines, i.e. those l... View full abstract»

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  • GPU-Accelerated Shape Simplification for Mechanical-Based Applications

    Publication Year: 2007, Page(s):91 - 102
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3790 KB) | HTML iconHTML

    In this paper we present a GPU-based method for removing shape details of 3D models. 3D models used in finite element analysis (FEA) are often either constructed for the purpose of manufacturing, or a result of 3D scanning. The models therefore contain shape details that are neither important for FEA nor compatible with the mechanical hypotheses. Vertex removal is a popular method for removing geo... View full abstract»

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  • Topological Correction of Hypertextured Implicit Surfaces for Ray Casting

    Publication Year: 2007, Page(s):103 - 112
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (588 KB) | HTML iconHTML

    Hypertextures are a useful modelling tool in that they can add three-dimensional detail to the surface of otherwise smooth objects. Hypertextures can be rendered as implicit surfaces, resulting in objects with a complex but well defined boundary. However, representing a hypertexture as an implicit surface often results in many small parts being detached from the main surface, turning an object int... View full abstract»

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  • Topological Generators and Cut-Graphs of Arbitrary Triangle Meshes

    Publication Year: 2007, Page(s):113 - 122
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2181 KB) | HTML iconHTML

    Recent advances in the parameterization and adaptive sampling of disc-like surfaces have brought a renewed interest on the global parameterization problem and, more specifically, on the cut-graph search. This paper focuses on the calculation of a family of generators and cut-graphs for the global parameterization of arbitrary triangle meshes. This result is achieved by combining the construction o... View full abstract»

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  • Robust Smooth Feature Extraction from Point Clouds

    Publication Year: 2007, Page(s):123 - 136
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7120 KB) | HTML iconHTML

    Defining sharp features in a given 3D model facilitates a better understanding of the surface and aids visualizations, reverse engineering, filtering, simplification, non-photo realism, reconstruction and other geometric processing applications. We present a robust method that identifies sharp features in a point cloud by returning a set of smooth curves aligned along the edges. Our feature extrac... View full abstract»

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  • Automatic multiview quadruple alignment of unordered range scans

    Publication Year: 2007, Page(s):137 - 146
    Cited by:  Papers (3)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2657 KB) | HTML iconHTML

    This paper presents a new multiview alignment algorithm that performs both the coarse and fine alignment of unordered sets of range scans. Our algorithm selects quadruples of range scans, which have feature points of their 2D projections in common. These quadruples are then verified using an iterative closest point (ICP) algorithm. The accepted quadruples form incomplete models of an object that c... View full abstract»

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  • A Partition-of-Unity Based Algorithm for Implicit Surface Reconstruction Using Belief Propagation

    Publication Year: 2007, Page(s):147 - 155
    Cited by:  Papers (5)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB) | HTML iconHTML

    In this paper, we propose a new algorithm for the fundamental problem of reconstructing surfaces from a large set of unorganized 3D data points. The local shapes of the surface are recovered by variational implicit surface represented as a weighted combination of radial basis functions. The variational implicit patches are then combined together to form the overall surface via a set of blending fu... View full abstract»

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  • Texture Atlas Generation for Inconsistent Meshes and Point Sets

    Publication Year: 2007, Page(s):156 - 168
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1370 KB) | HTML iconHTML

    In order to compute texture atlases with low stretch and hardly visible texture seams existing texture mapping tools pose high demands on the quality of surface representations like consistent orientation, watertightness, or manifoldness which many models commonly used in day-to-day modeling practice fail to meet. In this paper we propose an approach that bridges the gap between requirements of hi... View full abstract»

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  • Anisotropic filtering on normal field and curvature tensor field using optimal estimation theory

    Publication Year: 2007, Page(s):169 - 178
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1483 KB) | HTML iconHTML

    In this paper, we study the problem of mesh denoising for improving the single pass surface estimation on normals and curvature tensors. We focus mainly on the engineering objects represented as dense triangle meshes. In particular, a two run nonlinear diffusion algorithm based on optimal estimation theory is proposed to adoptively filter out the undesired discontinuities introduced by noise while... View full abstract»

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