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Geometric Modeling and Imaging--New Trends (GMAI'06)

Date 5-7 July 2006

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Displaying Results 1 - 25 of 49
  • Geometric Modeling and Imaging--New Trends - Cover

    Publication Year: 2006, Page(s): c1
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  • Geometric Modeling and Imaging--New Trends - Title

    Publication Year: 2006, Page(s):i - iii
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  • Geometric Modeling and Imaging--New Trends - Copyright

    Publication Year: 2006, Page(s): iv
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  • Geometric Modeling and Imaging - New Trends - TOC

    Publication Year: 2006, Page(s):v - vii
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  • Preface

    Publication Year: 2006, Page(s): viii
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  • Reviewers

    Publication Year: 2006, Page(s): ix
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  • Modeling Deformable Objects for Computer-Aided Sculpting (CAS)Modeling Deformable Objects for Computer-Aided Sculpting (CAS)

    Publication Year: 2006, Page(s):3 - 8
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (423 KB) | HTML iconHTML

    Software tools for modeling complex freeform objects require the designer to use sophisticated procedures and complex protocols that do not inherently support the creative design process. Typical tasks include tedious control point manipulation and manual surface patch stitching operations. An interactive computer-aided sculpting (CAS) framework based upon deformable geometric models is described ... View full abstract»

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  • 3D Object Reconstruction Using Geometric Computing

    Publication Year: 2006, Page(s):9 - 14
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB) | HTML iconHTML

    Fragmented objects are encountered in a variety of diverse engineering and scientific fields including industrial inspection, customized medical prosthesis design, forensic science, paleontology, and archaeology. The arbitrarily broken pieces must be reassembled and new material often added to complete the process of shape reconstruction. To prevent physical damage of the pieces during reconstruct... View full abstract»

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  • Manipulation of Elastically Deformable Surfaces through Maya Plug-in

    Publication Year: 2006, Page(s):15 - 21
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (791 KB) | HTML iconHTML

    In this paper, we develop a mathematical model from the theory of plate bending in elasticity which relates physical properties of a surface to its elastic deformation. We present the finite difference solution of the mathematical model and implement it using the Maya API and the MEL scripting language. We examine the effects of material properties and other factors on surface shapes and demonstra... View full abstract»

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  • High-Performance Rendering on Clusters of Workstations

    Publication Year: 2006, Page(s):22 - 27
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (210 KB) | HTML iconHTML

    The computer-graphics aspects of the visualization of large data sets, in particular, digital models of real or planned solid objects in a heterogeneous distributed environment are investigated. It is demonstrated that binary-swap compositing does not scale well on networks of workstations. A multi-server system, based on scanline algorithms and using Java technology, is proposed. The proposed sys... View full abstract»

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  • Orthogonal Least Squares in Partition of Unity Surface Reconstruction with Radial Basis Function

    Publication Year: 2006, Page(s):28 - 33
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (363 KB) | HTML iconHTML

    In this paper, a least squares formulation with radial basis function for surface reconstruction is presented and OLS (orthogonal least squares) algorithm is proposed to select centers and eliminate numerical ill-conditioning. The two objectives are fused into a single iterative process in OLS algorithm, which makes the reconstruction fast and robust. In the end, in order to deal with large point ... View full abstract»

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  • Video Classification Using Normalized Information Distance

    Publication Year: 2006, Page(s):34 - 40
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (198 KB) | HTML iconHTML

    There has been a vast collection of multimedia resources on the net. This has opened an opening for researchers to explore and advance the science in the field of research in storing, handling, and retrieving digital videos. Video classification and segmentation are fundamental steps for efficient accessing; retrieving, browsing and compressing large amount of video data. The basic operation video... View full abstract»

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  • Constrained Shape Control of Bicubic B-Spline Surfaces by Knots

    Publication Year: 2006, Page(s):41 - 46
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (434 KB) | HTML iconHTML

    Constrained modification of B-spline surfaces is essential in geometric design. Modification tools by purely knot alteration are presented in this paper: moving an isoparametric line to a specified location and dragging a point of the surface to a predefined point. Both methods yield smoother change than the well-known control point repositioning, while in the first case symmetric bodies can be de... View full abstract»

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  • FGS: Computer Simulation System in Generating Fractals

    Publication Year: 2006, Page(s):47 - 50
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (239 KB) | HTML iconHTML

    Fractal can be represented as an irregular and fragmented geometric shape that can be subdivided in parts, where each part appears to be the same in all ranges of scale. The generation of each fractal is dependent on the approach and algorithm used. Thus it is important to understand the properties of each type of fractals as this will influence the procedure during the generation of fractal. This... View full abstract»

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  • Modeling and Rendering of DPP-Based Light Fields

    Publication Year: 2006, Page(s):51 - 56
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (765 KB) | HTML iconHTML

    Autostereoscopic displays are a subject of recent research efforts in computer graphics. Such displays have to be fed graphics information in order to produce spatial images. This information is typically 4D radiance data called a light field. Traditionally light-field models were based on the two-plane parameterization. In this paper, however, we present a light-field representation that is based... View full abstract»

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  • Visualization of Temporal-Oriented Datasets

    Publication Year: 2006, Page(s):57 - 62
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (423 KB) | HTML iconHTML

    Visualization and interpolation naturally go together and strengthen each other. The paper presents an interpolation method as a pre-processing tool to generate the missing data to be visualized. The method is applied in election prediction, a typical temporal-oriented spatiotemporal dataset. The experimental results demonstrate the ability of the methods to accurately predict the presidential ele... View full abstract»

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  • Multiresolution Hierarchy for Real-Time Cartoon-Style Rendering

    Publication Year: 2006, Page(s):63 - 68
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (743 KB) | HTML iconHTML

    In this paper we present a new approach for real time cartoon-style rendering for large datasets. It uses color quantization to determine the different shadow regions and utilizes multiresolution hierarchy to maintain appropriate level of detail over the various regions of the mesh. To comply with visual requirements, our algorithm performs real time mesh subdivision on selected regions to reach t... View full abstract»

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  • An Analysis of Linear and Non-Linear Interpolation Techniques for Three-Dimensional Rendering

    Publication Year: 2006, Page(s):69 - 76
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (566 KB) | HTML iconHTML

    Many research papers indicate the use of various linear and non-linear interpolation techniques for the shading of three-dimensional objects. This paper presents a comparative study of the linear and non-linear interpolation techniques for the shading of three-dimensional objects. It presents an analysis of different linear and non-linear interpolation techniques with respect to various parameters... View full abstract»

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  • Toolpath Pattern Comparison: Contour-Parallel with Direction-Parallel

    Publication Year: 2006, Page(s):77 - 82
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB) | HTML iconHTML

    During rough cut machining of sculptured parts, appropriate selection of a tool path pattern in each cutting plane can significantly improve productivity. In this paper, various feasible toolpath patterns are investigated. A feedrate machining time model that takes into account CNC machine acceleration and deceleration for automatically identifying the most productive toolpath pattern is developed... View full abstract»

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  • Interoperability among CAD/CAM/CAE Systems: A Review of Current Research Trends

    Publication Year: 2006, Page(s):82 - 89
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (194 KB) | HTML iconHTML

    Interoperability among CAD/CAM/CAE systems is a well known problem in product design and development. At present geometrical data exchange among different software packages is usually carried out through neutral file formats (IGES or STEP) or through proprietary formats. Data exchange processes are usually afflicted by several problems, such as: information loss, redundancy, one-way data exchange ... View full abstract»

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  • Collaborative Design: From Concept to Application

    Publication Year: 2006, Page(s):90 - 96
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4559 KB) | HTML iconHTML

    Collaborative work invests product design process to integrate as soon as possible all the partners and all necessary information in order to improve quality delay and costs. Design is then defined as collaborative and can be optimized by allowing upstream integration of data, resources and knowledge. In this context, CAD model becomes a digital mock-up (DMU) which is at the centre of communicatio... View full abstract»

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  • Lattice Boltzmann Method for Real-Time Simulation of Lava Flows

    Publication Year: 2006, Page(s):97 - 106
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (627 KB) | HTML iconHTML

    Methods for simulating viscous liquid flows, such as volcanic lava, are developed for use in real-time interactive graphical applications such as computer games. Eulerian lattice Boltzmann methods are implemented and compared to simpler models based on cellular automata and particle systems. A new storage method, the chunky octree, a technique for removing instabilities through velocity limiting a... View full abstract»

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  • Graphics and the Understanding of Perceptual Mechanisms: Analogies and Similarities

    Publication Year: 2006, Page(s):107 - 112
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1061 KB) | HTML iconHTML

    Graphics give an alternative representation model for images and graphic rewriting gives another viewpoint for image matching, image retrieval and identity of shape constancy - all subjects that have raised passionate discussion of mathematical models for both machine and human vision. Attributed graph grammars are a powerful way of describing transformations of complex structures. Attributed grap... View full abstract»

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  • Generating Surface Textures based on Cellular Networks

    Publication Year: 2006, Page(s):113 - 120
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3030 KB) | HTML iconHTML

    This paper describes a method allowing the automatic multi-texturing and simulation of surface imperfections based on a cellular network. In this representation, networks of connected cells are constructed in a natural and dynamic way allowing simultaneously real-time and multi-behavior simulation. We also introduce an original technique to store cells in space in a fast and boundless manner witho... View full abstract»

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  • An Integrated System for Virtual Scene Rendering, Stereo Reconstruction and Accuracy Estimation.

    Publication Year: 2006, Page(s):121 - 126
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (707 KB) | HTML iconHTML

    This article depicts an integrated system capable of generating virtual stereo scenes, reconstructing a three-dimensional map of distances, and calculating the accuracy of the results obtained. This tool is particularly useful for verifying the validity of distance reconstruction techniques, and is robust enough to use in a wide variety of scenarios since it avoids the need for an image-capture sy... View full abstract»

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