SPBG: Symposium on Point Based Graphics: Recent submissions
Now showing items 41-60 of 89
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Octree-Based Progressive Geometry Coding of Point Clouds
(The Eurographics Association, 2006)We propose a generic point cloud encoder that compresses geometry data including positions and normals of point samples corresponding to 3D objects with arbitrary topology. In this work, the coding process is led by an ... -
A Fast k-Neighborhood Algorithm for Large Point-Clouds
(The Eurographics Association, 2006)Algorithms that use point-cloud models make heavy use of the neighborhoods of the points. These neighborhoods are used to compute the surface normals for each point, mollification, and noise removal. All of these primitive ... -
Approximating Geodesics on Point Set Surfaces
(The Eurographics Association, 2006)We present a technique for computing piecewise linear approximations of geodesics on point set surfaces by minimizing an energy function defined for piecewise linear path. The function considers path length, closeness to ... -
Interactive Out-Of-Core Texturing with Point-Sampled Textures
(The Eurographics Association, 2006)The visualization of huge 3D objects becomes available on common workstations thanks to highly optimized data-structures and out-of-core frameworks for rendering. However, the editing, and in particular, the texturing of ... -
GPU-Based Ray-Casting of Quadratic Surfaces
(The Eurographics Association, 2006)Quadratic surfaces are frequently used primitives in geometric modeling and scientific visualization, such as rendering of tensor fields, particles, and molecular structures. While high visual quality can be achieved using ... -
Splat/Mesh Blending, Perspective Rasterization and Transparency for Point-Based Rendering
(The Eurographics Association, 2006)In this paper we present multiple simple and efficient improvements for splatting based rendering systems. In a first step we derive a perspectively correct splat rasterization algorithm suitable for both efficient ... -
A Dynamic Surface Reconstruction Framework for Large Unstructured Point Sets
(The Eurographics Association, 2006)We present a method to reconstruct simplified mesh surfaces from large unstructured point sets, extending recent work on dynamic surface reconstruction. The method consists of two core components: an efficient selective ... -
Template Deformation for Point Cloud Fitting
(The Eurographics Association, 2006)The reconstruction of high-quality surface meshes from measured data is a vital stage in digital shape processing. We present a new approach to this problem that deforms a template surface to fit a given point cloud. Our ... -
Single-Pass Point Rendering and Transparent Shading
(The Eurographics Association, 2006)Hardware accelerated point-based rendering (PBR) algorithms have suffered in the past from multiple rendering passes; possibly a performance limiting factor. Two passes over the point geometry have been necessary because ... -
Laser Scanner Super-resolution
(The Eurographics Association, 2006)We give a method for improving the resolution of surfaces captured with a laser range scanner by combining many very similar scans. This idea is an application of the 2D image processing technique known as superresolution. ... -
A Unified Lagrangian Approach to Solid-Fluid Animation
(The Eurographics Association, 2005)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 ... -
Conversion of Point-Sampled Models to Textured Meshes
(The Eurographics Association, 2005)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 ... -
DUODECIM - A Structure for Point Scan Compression and Rendering
(The Eurographics Association, 2005)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 ... -
Point Sampling with Uniformly Distributed Lines
(The Eurographics Association, 2005)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 ... -
Computing Variation Modes for Point Set Surfaces
(The Eurographics Association, 2005)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 ... -
Robust Filtering of Noisy Scattered Point Data
(The Eurographics Association, 2005)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. ... -
A Practical Structured Light Acquisition System for Point-Based Geometry and Texture
(The Eurographics Association, 2005)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 ... -
Surface Reconstruction with Enriched Reproducing Kernel Particle Approximation
(The Eurographics Association, 2005)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 ... -
A Sampling Theorem for MLS Surfaces
(The Eurographics Association, 2005)Recently, point set surfaces have been the focus of a large number of research efforts. Several different methods have been proposed to define surfaces from points and have been used in a variety of applications. However, ... -
Conformal Alpha Shapes
(The Eurographics Association, 2005)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 ...