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  3. Computers & Graphics
  4. 2004
Showing papers in "Computers & Graphics in 2004"
Journal Article•10.1016/J.CAG.2004.08.009•
A survey of point-based techniques in computer graphics

[...]

Leif Kobbelt1, Mario Botsch1•
RWTH Aachen University1
01 Dec 2004-Computers & Graphics
TL;DR: This paper reviews and evaluates different shape representations, geometric algorithms, and rendering methods, which use points as a universal graphics primitive, both for efficient rendering and for flexible geometry processing of highly complex 3D-models.

373 citations

Journal Article•10.1016/J.CAG.2004.08.014•
Point-based rendering techniques

[...]

Miguel Sainz1, Renato Pajarola1•
University of California, Irvine1
01 Dec 2004-Computers & Graphics
TL;DR: This paper revisit and compare a number of recently developed point-based rendering implementations within a common testbed, based on a common view-dependent level-of-detail (LOD) rendering framework.

122 citations

Journal Article•10.1016/J.CAG.2003.10.018•
Advanced techniques for high-quality multi-resolution volume rendering

[...]

Stefan Guthe1, Wolfgang Strasser1•
University of Tübingen1
01 Feb 2004-Computers & Graphics
TL;DR: Using a prototype implementation of this compression-based multi-resolution rendering of very large volume data sets at interactive to real-time frame rates on standard PC hardware, a high-quality interactive rendering of large data sets on a single off-the-shelf PC is performed.

101 citations

Journal Article•10.1016/J.CAG.2003.12.003•
FIT-recommend ing TV programs to family members

[...]

Dina Goren-Bar1, Oded Glinansky1•
Ben-Gurion University of the Negev1
01 Apr 2004-Computers & Graphics
TL;DR: This work introduces FIT, a Family Interactive TV system that aims to filter TV programs according to the different viewer's preferences, and evaluation results indicate that FITs performance resembles the system that asks for user identification, and considerably outperforms the random system.

67 citations

Journal Article•10.1016/J.CAG.2004.08.002•
Watermarking 3D mesh by spherical parameterization

[...]

Li Li1, David Zhang2, Zhigeng Pan1, Jiaoying Shi1, Kun Zhou1, Kai Ye1 •
Zhejiang University1, Hong Kong Polytechnic University2
01 Dec 2004-Computers & Graphics
TL;DR: A robust 3D trianglular mesh watermarking algorithm is presented by applying spherical parameterization, which shows that watermarks can be extracted without mesh alignment or re-meshing under a variety of attacks.

56 citations

Journal Article•10.1016/J.CAG.2004.08.003•
Technical Section: PDE blending surfaces with C2 continuity

[...]

Lihua You1, Peter Comninos1, Jian J. Zhang1•
Bournemouth University1
01 Dec 2004-Computers & Graphics
TL;DR: Comparison with the existing methods indicates that this method is capable of generating blending surfaces almost as fast and accurately as the closed-form method and it is more efficient and accurate than other extant PDE-based methods.

47 citations

Journal Article•10.1016/J.CAG.2004.06.007•
Gulliver's Genie: Agency, Mobility, Adaptivity

[...]

Michael J. O'Grady1, Gregory M. P. O'Hare1•
University College Dublin1
01 Oct 2004-Computers & Graphics
TL;DR: Gulliver's Genie is presented, an archetypical ubiquitous computing application that embraces three central constructs; those of agency, mobility and adaptivity, and adopts a Multi-Agent Systems metaphor whereby agents manage and maintain a context within which mobile users exist and, based upon this context, seeks to adapt and personalize content based upon perceived individual user needs.

46 citations

Journal Article•10.1016/J.CAG.2004.04.010•
Evaluation of difference bounds for computing rational Bézier curves and surfaces

[...]

Wu Zhongke1, Lin Feng1, Seah Hock Soon1, Chan Kai Yun1•
Nanyang Technological University1
01 Aug 2004-Computers & Graphics
TL;DR: This short paper proposes very large difference bounds for rational Bezier curves and surfaces, with focus on the derivation and mathematical proof of the bound evaluation, in the form of two theorems.

46 citations

Journal Article•10.1016/J.CAG.2004.04.002•
Where computers disappear, virtual humans appear

[...]

Anton Nijholt
01 Aug 2004-Computers & Graphics
TL;DR: The role of virtual humans (or embodied conversational agents) in smart and ambient intelligence environments is surveyed and it is argued that, rather than is common in traditional human–computer interface research, it needs to look at multi-party interaction.

46 citations

Journal Article•10.1016/J.CAG.2004.06.010•
A refined data addressing and processing scheme to accelerate volume raycasting

[...]

Sören Grimm1, Stefan Bruckner1, Armin Kanitsar1, M. Eduard Gröller1•
Vienna University of Technology1
01 Oct 2004-Computers & Graphics
TL;DR: A new processing scheme for volume raycasting is introduced which exploits thread-level parallelism—a technology now supported by commodity computer architectures.

45 citations

Journal Article•10.1016/J.CAG.2004.08.012•
Point cloud surfaces using geometric proximity graphs

[...]

Jan Klein1, Gabriel Zachmann2•
University of Paderborn1, University of Bonn2
01 Dec 2004-Computers & Graphics
TL;DR: A new definition of an implicit surface over a noisy point cloud is presented, based on the weighted least-squares approach, and can be integrated into other surface definitions, such as moving least squares, so that these benefits carry over.
Journal Article•10.1016/J.CAG.2003.10.004•
Multi-threading and clustering for scene graph systems

[...]

Marcus Roth, Gerrit Voss1, Dirk Reiners•
MediaTech Institute1
01 Feb 2004-Computers & Graphics
TL;DR: This work presents an approach for a very general multi-threading framework that allows total separation of threads without total replication of data, and also supports extensions to clusters, both for sort-first and sort-last rendering configurations.
Journal Article•10.1016/J.CAG.2003.12.007•
Reverse engineering of a NURBS surface from digitized points subject to boundary conditions

[...]

Zhongwei Yin1•
Shanghai Jiao Tong University1
01 Apr 2004-Computers & Graphics
TL;DR: The proposed method uses chosen data points as control points to construct initial NURBS surfaces and then modifies them using minimization of deviation under boundary condition constraints, solved by the method of Lagrange multipliers.
Journal Article•10.1016/J.CAG.2003.10.011•
Reflectance field based real-time, high-quality rendering of bidirectional texture functions

[...]

Jan Meseth1, Gero Müller1, Reinhard Klein1•
University of Bonn1
01 Feb 2004-Computers & Graphics
TL;DR: A new real-time rendering paradigm based on linear interpolation of reflection fields, which provides significant improvements with respect to realism for such highly structured materials without sacrificing the general applicability and speed of previous algorithms is proposed.
Journal Article•10.1016/J.CAG.2004.06.006•
A novel interaction metaphor for personal environment control: direct manipulation of physical environment based on 3D visualization

[...]

Ali Asghar Nazari Shirehjini1•
Fraunhofer Society1
01 Oct 2004-Computers & Graphics
TL;DR: The Personal Environment Controller provides an intuitive and novel interaction metaphor which tightly integrates the user, his media and physical environment and extends the well known and accepted interaction paradigm of direct manipulation from the virtual computer world to the physical real world.
Journal Article•10.1016/J.CAG.2004.03.009•
Polynomiography and applications in art, education, and science

[...]

Bahman Kalantari1•
Rutgers University1
01 Jun 2004-Computers & Graphics
TL;DR: Polynomiography has tremendous applications in the visual arts, education, and science, and provides not only a tool for viewing polynomials, present in virtually every branch of science, but also a tool to discover new theorems.
Journal Article•10.1016/J.CAG.2003.10.006•
Adaptive Tesselation of Subdivision Surfaces

[...]

Volker Settgast, Kerstin Müller, Christoph Fünfzig, Dieter W. Fellner
01 Feb 2004-Computers & Graphics
TL;DR: This paper presents a rendering algorithm which dynamically adapts to static surface properties like curvature as well as to view-dependent properties like silhouette location and projection size, which can be adapted to achieve a desired frame rate in the scenegraph system OpenSG.
Journal Article•10.1016/J.CAG.2003.12.004•
User interface development for interactive television: extending a commercial DTV platform to the virtual channel API

[...]

Konstantinos Chorianopoulos1, Diomidis Spinellis1•
Athens University of Economics and Business1
01 Apr 2004-Computers & Graphics
TL;DR: An animated character is employed in an interactive music television application that was evaluated by consumers, and was developed using the Virtual Channel Control Library, a custom high-level API that was built using Microsoft Windows and TV technologies.
Journal Article•10.1016/J.CAG.2004.06.002•
Real-time detection of emotional changes for inhabited environments

[...]

Enrique Leon1, Graham Clarke1, Victor Callaghan1, Francisco Sepulveda1•
University of Essex1
01 Oct 2004-Computers & Graphics
TL;DR: It is argued that the proposed methodology will be able to detect emotional changes in real time utilising physiological measures and a combination of Artificial Neural Networks and statistical mechanisms.
Journal Article•10.1016/J.CAG.2003.12.005•
A reference architecture supporting hypervideo content for ITV and the internet domain

[...]

Matthias Finke, Dirk Balfanz
01 Apr 2004-Computers & Graphics
TL;DR: A generic view of new media as Interactive TV, Interactive Video or collaborative Hypervideo based on the key concepts of combining video content, interactivity and support for communities is elaborate on.
Journal Article•10.1016/J.CAG.2004.06.011•
CyberTape: an interactive measurement tool on polyhedral surface

[...]

Charlie C. L. Wang1•
The Chinese University of Hong Kong1
01 Oct 2004-Computers & Graphics
TL;DR: An approach to measure the curve distance between two points on a polyhedral surface in the manner that simulates dragging a tapeline at the two points is presented, to allow users to perform measurement tasks in an intuitive and natural way in virtual space.
Journal Article•10.1016/J.CAG.2003.10.014•
Efficient representation and streaming of 3D scenes

[...]

Jörg Sahm, Ingo Soetebier, Horst Birthelmer
01 Feb 2004-Computers & Graphics
TL;DR: This paper introduces a system in order to stream the data of even large 3D scenes to remote devices and focuses on the selection of the information according to the user's interest and the reduction of the selected data.
Journal Article•10.1016/J.CAG.2003.12.009•
A stratification approach for modeling two-dimensional cell complexes

[...]

Sinesio Pesco, Geovan Tavares, Hélio Lopes
01 Apr 2004-Computers & Graphics
TL;DR: The concept of combinatorial stratification is introduced and the Handlebody theory for cell complexes is used so as to propose a new representation called Handle-Cell (HC-Rep), which deals not only with objects with different dimensionality but also with non-manifolds models.
Journal Article•10.1016/J.CAG.2003.10.008•
Occlusion Culling in OpenSG PLUS

[...]

Dirk Staneker1, Dirk Bartz1, Wolfgang Straßer1•
University of Tübingen1
01 Feb 2004-Computers & Graphics
TL;DR: Techniques utilizing image-space and temporal coherence are used to optimize occlusion query efficiency and only the standard OpenSG data structures are used and no precomputation is necessary.
Journal Article•10.1016/J.CAG.2004.03.012•
Hierarchical graph maps

[...]

James Abello1•
Rutgers University1
01 Jun 2004-Computers & Graphics
TL;DR: The main tasks behind the computation of Graph Maps are highlighted and the techniques have been used experimentally in the navigation of graphs defined on vertex sets ranging from 100 to 250 million vertices.
Journal Article•10.1016/J.CAG.2004.04.012•
Procedural 3D texture synthesis using genetic programming

[...]

Adam Hewgill1, Brian J. Ross1•
Brock University1
01 Aug 2004-Computers & Graphics
TL;DR: The automatic synthesis of procedural textures for 3D surfaces using genetic programming is investigated, and a variety of experiments successfully generated procedural textures that displayed visual characteristics similar to the target textures used during training.
Journal Article•10.1016/J.CAG.2003.10.005•
API Design for adaptive subdivision schemes

[...]

Abhijit Sovakar1, Leif Kobbelt1•
RWTH Aachen University1
01 Feb 2004-Computers & Graphics
TL;DR: An API for adaptive subdivision schemes is presented which is generic in the sense that it allows to define a composite subdivision operator as a sequence of atomic splitting and averaging rules.
Journal Article•10.1016/J.CAG.2003.12.013•
MiniVR: a portable virtual reality system ☆

[...]

Marta Fairén, Pere Brunet, Torsten Techmann
01 Apr 2004-Computers & Graphics
TL;DR: A semi-immersive interaction system based on a movable stereoscopic projection screen with a tracking system to capture the movement of the screen with respect to the virtual model, allowing very simple interaction among users and designers at distant locations.
Journal Article•10.1016/J.CAG.2004.08.013•
Surface processing methods for point sets using finite elements

[...]

Ulrich Clarenz, Martin Rumpf, Alexandru Telea1•
Eindhoven University of Technology1
01 Dec 2004-Computers & Graphics
TL;DR: This framework efficiently and effectively brings well-known PDE-based processing techniques to the field of point-based surfaces via partial differential equations via a finite element discretization of PDEs on point surfaces.
Journal Article•10.1016/J.CAG.2004.06.005•
Computer Aided Emotional Fashion

[...]

Petar Goulev1, Lisa Stead2, Ebrahim Mamdani1, Caroline Evans2•
Imperial College London1, Central Saint Martins2
01 Oct 2004-Computers & Graphics
TL;DR: CAEF, which stands for Computer Aided Emotional Fashion, aims to create clothing that is personalised by the emotions of the individual and is able to represent and stimulate emotional response in human–human interaction.
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