EG 1996 Conference Proceedings: Recent submissions
Now showing items 21-40 of 42
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Compositing Computer and Video Image Sequences: Robust Algorithms for the Reconstruction of the Camera Parameters
(Blackwell Science Ltd and the Eurographics Association, 1996)Augmented reality shows great promises in fields where a simulation in situ would be impossible or too expensive. When mixing synthetic and real objects in the same animated sequence, we must be sure that the geometrical ... -
Vector Field Based Texture Mapping of Animated Implicit Objects
(Blackwell Science Ltd and the Eurographics Association, 1996)This paper shows that an adequate use of vectorfields can solve most inconsistencies related to texture mapping that appear in current animation and rendering systems based on implicit objects. The method used is based on ... -
Fractal modeling using free form techniques
(Blackwell Science Ltd and the Eurographics Association, 1996)IFS models have become a powerful tool for the construction of fractal sets. They offer a straightforward way to generate complex, self-similar figures as attractors. However, they present the fundamental disadvantage of ... -
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 ... -
Extraction of Typographic Elements from Outline Representations of Fonts
(Blackwell Science Ltd and the Eurographics Association, 1996)Digital typefaces for computer graphics and multimedia applications should be capable of supporting operations such as font variations, transformations. deformations and blending. A powerful implementation of such operations ... -
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 ... -
A Three Dimensional Image Cache for Virtual Reality
(Blackwell Science Ltd and the Eurographics Association, 1996)Despite recent advances in rendering hardware, large and complex virtual environments cannot be displayed with a sufficiently highframe rate, because of limitations in the available rendering performance.This paper presents ... -
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 ... -
CCD-Camera Based Optical Beacon Tracking for Virtual and Augmented Reality
(Blackwell Science Ltd and the Eurographics Association, 1996)We introduce a scheme for optical beacon tracking using two CCD-cameras and LED beacons. Due to the sub-pixel accuracy of the beacon detection algorithm a very high precision can be achieved so that the tracking method is ... -
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 ... -
Head-Tracked Stereo Viewing with Two-Handed 3 D Interaction for Animated Character Construction
(Blackwell Science Ltd and the Eurographics Association, 1996)In this paper, we demonstrate how a new interactive 3 D desktop metaphor based on two-handed 3 D direct manipulation registered with head-tracked stereo viewing can be applied to the task of constructing animated characters. ... -
Data Dependent Thin Plate Energy and its use in Interactive Surface Modeling
(Blackwell Science Ltd and the Eurographics Association, 1996)When modeling spline surfaces of complex shape, one has to deal with an overwhelming number of control points. Modeling by direct manipulation of the control points is a tedious task. In particular, it is very difficult ... -
Implicit Sweep Objects
(Blackwell Science Ltd and the Eurographics Association, 1996) -
Generation of Smooth Surfaces by Controlling Curvature Variation
(Blackwell Science Ltd and the Eurographics Association, 1996)To satisfy a designer s intention for constructing aesthetic shapes such as automotive bodies, we propose a surface generation method. In the surface design process, designers determine shapes according to their great ... -
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, ... -
Blob Metamorphosis based on Minkowski Sums
(Blackwell Science Ltd and the Eurographics Association, 1996)This paper addresses the metamorphosis of soft objects built from skeletons. We propose a new approach that may be split into three steps. The first step consists in an original splitting of the initial and the final shapes ... -
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 ... -
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 ... -
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 ...