Browsing Issue 3 by Title
Now showing items 18-37 of 42
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An Image based Measurement System for Anisotropic Reflection
(Blackwell Science Ltd and the Eurographics Association, 1996)This paper introduces an image based method for measuring bidirectional reflectance distribution functions (BRDF). The measurement system uses a CCD camera connected to a workstation to capture images from the material ... -
Implicit Sweep Objects
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Incremental constraint modelling in a feature modelling system
(Blackwell Science Ltd and the Eurographics Association, 1996)The techniques of constraint propagation have recently been successfully applied to feature-based design. Because of their speed, constraint propagation methods allow incremental design and rapid local modifcations of the ... -
Incremental Volume Rendering Using Hierarchical Compression
(Blackwell Science Ltd and the Eurographics Association, 1996)We present a new algorithm here for efficient incremental rendering of volumetric datasets. The primary goal of this algorithm is to give average workstations the ability to efficiently render volume data received over ... -
Integrating Computer Animation and Multimedia
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Intelligent Control for Haptic Displays
(Blackwell Science Ltd and the Eurographics Association, 1996)Usually, a mouse is used for input activities only, whereas output from the computer is sent via the monitor and one or two loudspeakers. But why not use the mouse for output, too? For instance, if it would be possible to ... -
Interactive Occlusion and Automatic Object Placement for Augmented Reality
(Blackwell Science Ltd and the Eurographics Association, 1996)We present several techniques for producing two visual and modeling effects in augmented reality. The first effect involves interactively calculating the occlusions between real and virtual objects. The second effect ... -
Interpolatory Subdivision on Open Quadrilateral Nets with Arbitrary Topology
(Blackwell Science Ltd and the Eurographics Association, 1996)A simple interpolatory subdivision scheme for quadrilateral nets with arbitrary topology is presented which generates C1 surfaces in the limit. The scheme satisfies important requirements for practical applications in ... -
Matching and Interpolation of Shapes using Unions of Circles
(Blackwell Science Ltd and the Eurographics Association, 1996)While the notion of shape of an object is very intuitive, its precise definition is very elusive, and defining a useful metric for the shape distance between objects is a difficult endeavor. At the same time many successful ... -
Mesh Simplification
(Blackwell Science Ltd and the Eurographics Association, 1996)Mesh simplification is an important stage after surface reconstruction since the models produced can contain a large number of polygons making them difficult to manipulate. In this paper we present a mesh simplification ... -
Method for Calculation of Sky Light Luminance Aiming at an Interactive Architectural Design
(Blackwell Science Ltd and the Eurographics Association, 1996)Recently, computer graphics are frequently used for both architectural design and visual environmental assessment. Using computer graphics, designers can easily compare the effect of the natural light on their architectural ... -
Modelling Megalithic Sites
(Blackwell Science Ltd and the Eurographics Association, 1996)In this paper, we present the MegaFormes project which deals with the modelling of megalithic sites. The goal is to enable virtual visits of megalithic sites and to help archaeologists in picturing the evolution of a ... -
Output-SensitiveVisibility Algorithms for Dynamic Scenes with Applications to Virtual Reality
(Blackwell Science Ltd and the Eurographics Association, 1996)An output-sensitive visibility algorithm is one whose runtime is proportional to the number of visible graphic primitives in a scene model-not to the total number of primitives, which can be much greater. The known practical ... -
Physically-Based Deformations Constrained in Displacements and Volume
(Blackwell Science Ltd and the Eurographics Association, 1996)This paper presents a method of constraining physically-based deformable objects. In this method, an object can be defined locally in terms of kinetic and dynamic (mass, position, speed), and physical parameters (compressibility, ... -
A Platform for User-Tailored Interaction Development in 2D, 3D, and VR
(Blackwell Science Ltd and the Eurographics Association, 1996)The discussion on the advantages and disadvantages of 2D, 3D, and VR interfaces and their applicability to different types of systems, users, and information led to a series of stand-alone implementations that lack the ... -
Radiosity for dynamic scenes in flatland with the visibility complex
(Blackwell Science Ltd and the Eurographics Association, 1996)The radiosity method is particularly suitable for global illumination calculations in static environments. Nonetheless, recent applications of image synthesis such as architectural simulation or lighting design require the ... -
Real-time Volumetric Deformable Models for Surgery Simulation using Finite Elements and Condensation
(Blackwell Science Ltd and the Eurographics Association, 1996)This paper discusses the application of 3D solid volumetric Finite Element models to surgery simulation. In particular it introduces three new ideas for solving the problem of achieving real-time performance for these ... -
Reusable Radiosity Objects
(Blackwell Science Ltd and the Eurographics Association, 1996)Because of the view independence and photo realistic image generation in a diffuse environment, radiosity is suitable for an interactive walk through system. The drawback of radiosity is that it is time-consuming in form ... -
Simplification of Global-Illumination Meshes
(Blackwell Science Ltd and the Eurographics Association, 1996)We present a methodfor simplifying the meshes produced as solutions to global illumination problems, reducing geometric complexity while retaining the perceived imagefidelity. The method has been applied to produce meshes ... -
Special Effects with Half-Toning
(Blackwell Science Ltd and the Eurographics Association, 1996)Half-toning is the process by which gray-scale images are approximated with sets of black and white pixels. The process works because our eyes perceive a local average, thus half-toning seeks to approximate the local ...