Browsing Eurographics Workshops and Symposia by Title
Now showing items 3201-3220 of 5413
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An O(log N) Parallel Time Exact Hidden-LineAlgorithm
(The Eurographics Association, 1987)"Parallel algorithms are given for the exact solution of the hidden-line problem. Most of the parallel algorithms proposed for visibility problems in the literature give approximate solutions. and thus cannot yield an upper ... -
Object Partitioning Considered Harmful: Space Subdivision for BVHs
(The Eurographics Association, 2009)A major factor for the efficiency of ray tracing is the use of good acceleration structures. Recently, bounding volume hierarchies (BVHs) have become the preferred acceleration structures, due to their competitive performance ... -
Object Snapping Method using Multi-Resolution Fuzzy Grid Snapping Technique
(The Eurographics Association, 2005)We propose the automatic snapping of objects using the Multi-resolution Fuzzy Grid Snapping (MFGS) for a sketch based CAD system. The sketch based CAD system, which has already been realized, identifies sketch drawings as ... -
Objective and Subjective Evaluation of Virtual Relighting from Reflectance Transformation Imaging Data
(The Eurographics Association, 2018)Reflectance Transformation Imaging (RTI) is widely used to produce relightable models from multi-light image collections. These models are used for a variety of tasks in the Cultural Heritage field. In this work, we carry ... -
Obscurance-based Volume Rendering Framework
(The Eurographics Association, 2008)Obscurances, from which ambient occlusion is a particular case, is a technology that produces natural-looking lighting effects in a faster way than global illumination. Its application in volume visualization is of special ... -
Occlusion Culling for Sub-Surface Models in Geo-Scientific Applications
(The Eurographics Association, 2004)Modern graphics cards support occlusion culling in hardware. We present a three pass algorithm, which makes efficient use of this feature. Our geo-scientific sub-surface data sets consist typically of a set of high resolution ... -
Occlusion-free Camera Control for Multiple Targets
(The Eurographics Association, 2012)Maintaining the visibility of target objects is a fundamental problem in automatic camera control for 3D graphics applications. Practical real-time camera control algorithms generally only incorporate mechanisms for the ... -
Ocean Waves Animation using Boundary Integral Equations and Explicit Mesh Tracking
(The Eurographics Association, 2014)We tackle deep water simulation in a scalable way, solving 3D irrotational flow using only variables stored in a mesh of the surface of the water, in time proportional to the rendered mesh. The heart of our method is a ... -
OCHRE a Powerful Tool for Culture Historical Research - A Chronological Model for Historical Roads and Paths
(IEEE, 2015)In this paper the Online Cultural and Historical Research Environment (OCHRE) will be presented as a tool that facilitates the dating of historical roads and paths. It is makes use of extracted roads and paths from Airborne ... -
Octree-based Point-Cloud Compression
(The Eurographics Association, 2006)In this paper we present a progressive compression method for point sampled models that is specifically apt at dealing with densely sampled surface geometry. The compression is lossless and therefore is also suitable for ... -
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 ... -
Octreemizer: A Hierarchical Approach for Interactive Roaming Through Very Large Volumes
(The Eurographics Association, 2002)We have developed a hierarchical paging scheme for handling very large volumetric data sets at interactive frame rates. Our system trades texture resolution for speed and uses effective prediction strategies. We have tested ... -
Olfactory Display: Fluid Dynamic Considerations for Realistic Odor Presentation
(The Eurographics Association, 2009)This paper describes some fluid dynamic considerations for attaining realistic odor presentation using an olfactory display. Molecular diffusion is an extremely slow process and, therefore, odor molecules released from ... -
OmniTiles - A User-Customizable Display Using An Omni-Directional Camera Projector System
(The Eurographics Association, 2022)We present OmniTiles, a manually changeable interface that enables the user to customize their own display. This is achieved by using tiles in basic shapes that are clipped together via magnets. The created structures are ... -
On Accuracy of Marching Isosurfacing Methods
(The Eurographics Association, 2008)Representational accuracy of the isosurface meshes produced by well-known marching isosurfacing methods is considered. Accuracy is determined versus the isosurface given by trilinear interpolation and quantified using a ... -
On Ancient Coin Classification
(The Eurographics Association, 2007)Illegal trade and theft of coins appears to be a major part of the illegal antiques market. Image based recognition of coins could substantially contribute to fight against it. Central component in the permanent identification ... -
On Approximation of the Laplace-Beltrami Operator and the Willmore Energy of Surfaces
(The Eurographics Association and Blackwell Publishing Ltd., 2011)Discrete Laplace Beltrami operators on polyhedral surfaces play an important role for various applications in geometry processing and related areas like physical simulation or computer graphics. While discretizations of ... -
On Combining Epigraphy, TLS, Photogrammetry, and Interactive Media for Heritage Documentation: The Case Study of Djehutihotep's Tomb in Dayr al-Barsha
(The Eurographics Association, 2018)The governors' tombs located at Dayr al-Barsha are considered among the most important monuments of the Egyptian Middle Kingdom. Unfortunately, due to quarrying activities, looting, and natural catastrophes, the archaeological ... -
On Creating Animated Presentations
(The Eurographics Association, 2003)Computers are used to display visuals for millions of live presentations each day, and yet only the tiniest fraction of these make any real use of the powerful graphics hardware available on virtually all of today s machines. ... -
On Discrete Killing Vector Fields and Patterns on Surfaces
(2010)Symmetry is one of the most important properties of a shape, unifying form and function. It encodes semantic information on one hand, and affects the shape's aesthetic value on the other. Symmetry comes in many flavors, ...