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Proceedings Eurographics/IEEE VGTC Symposium Point-Based Graphics, 2005.

20-21 June 2005

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Displaying Results 1 - 25 of 32
  • Point sampling with uniformly distributed lines

    Publication Year: 2005, Page(s):109 - 118
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (538 KB) | HTML iconHTML

    In this paper we address the problem of extracting representative point samples from polygonal models. The goal of such a sampling algorithm is to find points that are evenly distributed. We propose star-discrepancy as a measure for sampling quality and propose new sampling methods based on global line distributions. We investigate several line generation algorithms including an efficient hardware... View full abstract»

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  • DUODECIM - a structure for point scan compression and rendering

    Publication Year: 2005, Page(s):99 - 146
    Cited by:  Papers (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (584 KB) | HTML iconHTML

    In this paper we present a compression scheme for large point scans including per-point normals. For the encoding of such scans we introduce a particular type of closest sphere packing grids, the hexagonal close packing (HCP). HCP grids provide a structure for an optimal packing of 3D space, and for a given sampling error they result in a minimal number of cells if geometry is sampled into these g... View full abstract»

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  • A practical structured light acquisition system for point-based geometry and texture

    Publication Year: 2005, Page(s):89 - 145
    Cited by:  Papers (19)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (880 KB) | HTML iconHTML

    We present a simple and high-quality 3D scanning system based on structured light. It uses the common setup of a video projector, a computer-controlled turntable and a single camera. Geometry is acquired using a combination of gray code and phase-shift projections, and it is stored and processed in a point-based representation. We achieve high accuracy by careful calibration of camera, projector, ... View full abstract»

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  • Progressive splatting

    Publication Year: 2005, Page(s):25 - 142
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (564 KB) | HTML iconHTML

    Surface splatting enables high quality and efficient rendering algorithms for dense point-sampled datasets. However, with increasing data complexity, the need for multiresolution models becomes evident. For triangle meshes, progressive or continuous level of detail hierarchies have proven to be very effective when it comes to (locally) adapt the resolution level of the 3D model to the application-... View full abstract»

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  • Computing variation modes for point set surfaces

    Publication Year: 2005, Page(s):63 - 69
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (404 KB) | HTML iconHTML

    Point sets have become a popular shape representation. In this paper, we present a novel approach to computing variation modes for point set surfaces, and represent the point set surface as a linear combination of the variation modes, called a generative representation for the point set surface. Given a point set, our approach consists of two steps: the first is to produce a set of new samples wit... View full abstract»

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  • Color Plates

    Publication Year: 2005, Page(s): 139
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (10 KB)

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  • Surface reconstruction with enriched reproducing kernel particle approximation

    Publication Year: 2005, Page(s):79 - 87
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (491 KB) | HTML iconHTML

    There are many techniques that reconstruct continuous 3D surfaces from scattered point data coming from laser range scanners. One of the most commonly used representations are point set surfaces (PSS) defined as the set of stationary points of a moving least squares (MLS) projection operator. One interesting property of the MLS projection is to automatically filter out high frequency noise, that i... View full abstract»

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  • High-quality surface splatting on today's GPUs

    Publication Year: 2005, Page(s):17 - 141
    Cited by:  Papers (23)  |  Patents (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (492 KB) | HTML iconHTML

    Point-based geometries evolved into a valuable alternative to surface representations based on polygonal meshes, because of their conceptual simplicity and superior flexibility. Elliptical surface splats were shown to allow for high-quality anti-aliased rendering by sophisticated EWA filtering. Since the publication of the original software-based EWA splatting, several authors tried to map this te... View full abstract»

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  • Conformal alpha shapes

    Publication Year: 2005, Page(s):55 - 61
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (338 KB) | HTML iconHTML

    We define a new filtration of the Delaunay triangulation of a finite set of points in Rd, similar to the alpha shape filtration. The new filtration is parameterized by a local scale parameter instead of the global scale parameter in alpha shapes. Since our approach shares many properties with the alpha shape filtration and the local scale parameter conforms to the local geometry we call... View full abstract»

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  • Conversion of point-sampled models to textured meshes

    Publication Year: 2005, Page(s):119 - 147
    Cited by:  Patents (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (338 KB) | HTML iconHTML

    We present an algorithm to convert point-sampled objects to textured meshes. The output mesh carries the geometric information present in the input model, while information about color and other surface attributes is separated and stored in textures. The point cloud is triangulated and decimated so it adequately represents the object geometry. Using EWA splatting, we compute textures patches for a... View full abstract»

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  • Color Plates

    Publication Year: 2005, Page(s):139 - 149
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (335 KB) | HTML iconHTML

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  • Voronoi rasterization of sparse point sets

    Publication Year: 2005, Page(s):33 - 143
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (301 KB) | HTML iconHTML

    Point-based representations are becoming increasingly common in computer graphics, especially for visualizing data sets where the number of points is large relative to the number of pixels involved in their display. When dealing with sparse point sets, however, many traditional rendering algorithms for point data perform poorly, either by generating blurry or non-occluding surface representations ... View full abstract»

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  • Cover Image Credits

    Publication Year: 2005, Page(s): 138
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (16 KB)

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  • A unified Lagrangian approach to solid-fluid animation

    Publication Year: 2005, Page(s):125 - 148
    Cited by:  Papers (21)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (535 KB) | HTML iconHTML

    We present a framework for physics-based animation of deforming solids and fluids. By merging the equations of solid mechanics with the Navier-Stokes equations using a particle-based Lagrangian approach, we are able to employ a unified method to animate both solids and fluids as well as phase transitions. Central to our framework is a hybrid implicit-explicit surface generation approach, which is ... View full abstract»

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  • Robust filtering of noisy scattered point data

    Publication Year: 2005, Page(s):71 - 144
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (502 KB) | HTML iconHTML

    In this paper, we develop a method for robust filtering of a noisy set of points sampled from a smooth surface. The main idea of the method consists of using a kernel density estimation technique for point clustering. Specifically, we use a mean-shift based clustering procedure. With every point of the input data we associate a local likelihood measure capturing the probability that a 3D point is ... View full abstract»

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  • Interactive ray tracing of point-based models

    Publication Year: 2005, Page(s):9 - 16
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (460 KB) | HTML iconHTML

    Point-based methods have recently gained significant interest, as their simplicity and independence of connectivity make them a simple and powerful tool in both modelling and rendering. Still, their use for high-quality and photorealistic rendering is still in its infancy, in particular for interactive applications. This paper describes a framework for interactively ray tracing point-based models ... View full abstract»

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  • Symposium on Point-Based Graphics 2005

    Publication Year: 2005, Page(s): 0_1
    IEEE is not the copyright holder of this material | PDF file iconPDF (73 KB)
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  • [Blank page]

    Publication Year: 2005, Page(s): 0_2
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  • Point-Based Graphics 2005 (IEEE Cat. No. 05EX1159)

    Publication Year: 2005
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  • Copyright

    Publication Year: 2005, Page(s): 2
    IEEE is not the copyright holder of this material | PDF file iconPDF (66 KB)
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  • Table of contents

    Publication Year: 2005, Page(s):3 - 4
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  • Preface

    Publication Year: 2005, Page(s): 5
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  • Ubiquitous 3D

    Publication Year: 2005
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (51 KB)

    Summary form only given. A decade ago 3D graphics moved from dedicated and expensive engineering graphics workstations to normal PCs. Sophisticated graphics was now accessible to a much larger audience and developer pool than before. A similar revolution is happening right now as mobile devices such as PDAs and cellular phones have their own standard 3D APIs, high-quality color displays, and even ... View full abstract»

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  • Attraction and projection

    Publication Year: 2005
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (39 KB)

    Summary form only given. Point-set surfaces can be characterized by the "projection" operators, which are used to bring nearby points onto the surfaces, and by the properties of the surfaces themselves. We survey some point-set surfaces and review some recent results. On the way we point out the close connections to other problems such as normal estimation and segmentation. View full abstract»

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  • Normal estimation for point clouds: a comparison study for a Voronoi based method

    Publication Year: 2005, Page(s):39 - 46
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1135 KB) | HTML iconHTML

    Many applications that process a point cloud data benefit from a reliable normal estimation step. Given a point cloud presumably sampled from an unknown surface, the problem is to estimate the normals of the surface at the data points. Two approaches, one based on numerical optimizations and another based on Voronoi diagrams are known for the problem. Variations of numerical approaches work well e... View full abstract»

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