Browsing Volume 10 (1991) by Title
Now showing items 21-40 of 65
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Development of an Intelligent Wheelchair Using Computer Graphics Animation and Simulation
(Blackwell Science Ltd and the Eurographics Association, 1991)A new robot simulator JC-1 is used as a control software development tool in a project in progress where an intelligent wheelchair for a blind user is being developed. The intelligent wheelchair is planned to be able to ... -
Discrepancy as a Quality Measure for Sample Distributions
(Eurographics Association, 1991)Discrepancy, a scalar measure of sample point equidistribution, is discussed in the context of Computer Graphics sampling problems. Several sampling strategies and their discrepancy characteristics are examined. The ... -
FACES: Facial Animation, Construction and Editing System
(Eurographics Association, 1991)The aim of the Facial Animation, Construction and Editing System (FACES) is to provide a software simulation of the human face. Attention has focused on the face as an important means of non-verbal communication. The ... -
Fast Rendering of General Ellipses
(Eurographics Association, 1991)Even though GKS did not include circles and, in a more general form, ellipses and elliptical arcs in the list of elementary graphics primitives, CGM settled this omission with its standardization in 1987. According to CGM ... -
Fat curves
(Blackwell Science Ltd and the Eurographics Association, 1991)Fat curves in two-dimensional Euclidean space are discussed. Previous work on fat curves is reviewed and a new definition is given for a fat curve having a smooth axis. The joining of two fat curves is discussed and a ... -
The Formal Specification of Level la of GKS
(Blackwell Science Ltd and the Eurographics Association, 1991)In this paper the formal specification of a part of level la of GKS is given in the algebraic specification language OBJ. It shows that it is possible to produce a formal specification of a substantial part of GKS which ... -
From Math Comes Beauty: Monkey Curves, Spirals, and Saddles
(Blackwell Science Ltd and the Eurographics Association, 1991)This informal note presents computational recipes for producing visually interesting surfaces. -
Geometric Modelling from Range Image Data
(Eurographics Association, 1991)An adaptive surface fitting algorithm is proposed for modelling the digitized surface of a real object described by an array of 3D points sampled on a rectangular mesh and stored in the form of a range image. A G1 -piecewise ... -
The GKS Input Model in Manifold
(Blackwell Science Ltd and the Eurographics Association, 1991)This paper describes the specification of the GKS input model in Manifold. The aim of the work reported in this paper was two-fold: first, to review the communication patterns implied by the GKS input model, and second, ... -
Inspection of Lace Using Machine Vision
(Blackwell Science Ltd and the Eurographics Association, 1991) -
Integrating Inheritance and Composition in an Objective Presentation Model for Multiple Media
(Eurographics Association, 1991)A formal model is presented which combines, in a single structure called a tangle, the power to express both the composition of aggregate objects, and the selective inheritance of object properties over a number of instances ... -
Integrating PHIGS and User Interface Systems
(Blackwell Science Ltd and the Eurographics Association, 1991)The past five years has seen an explosion of rich and effective user interface management systems and toolkits and an increase in the expectations regarding application portability. Nearly a decade old, the PHIGS input ... -
Interactive Conformance Testing for PHIGS
(Eurographics Association, 1991)Conformance testing for the Programmer’s Hierarchical Interactive Graphics System (PHIGS) standard presents certain novel difficulties, especially the indirect effect of many functions, and the inaccessibility to the program ... -
Interrogation of Offsets of Polynomial Surface Patches
(Eurographics Association, 1991)This paper presents an algorithm for computing the intersection of the offset (or parallel) surface of a polynomial surface patch ( rogenitor) of arbitrary degree, with a straight line. The rogenitor patch is expressed in ... -
Inverse Displacement Mapping
(Blackwell Science Ltd and the Eurographics Association, 1991)Inverse displacement mapping is a variant of displacement mapping which does not actually perturb the geometry of the surface being mapped. It is thus a true texture mapping technique which can be applied during rendering ... -
Liberation from Flatland: 3D Interaction Based on the Desktop Bat
(Eurographics Association, 1991)A novel device for 3D interaction is introduced, the Desktop Bat. This device is an evolutionary development of a mouse. It is like a mouse in that it is used on a desktop, but provides 5 degrees of freedom since in ... -
Low Sampling Densities using a psychovisual approach
(Eurographics Association, 1991)It has long been observed that the keenness of sight is lower for diagonal directions than for horizontal or vertical ones. This anisotropy of the human eye response can be exploited by using a non-orthogonal sampling ... -
A Methodology And Tool Set For Supporting The Development Of Graphical User Interfaces
(Blackwell Science Ltd and the Eurographics Association, 1991)A methodology and tool set for building application (assumed to be inherently non-graphical) software with graphical user interface is described. Initially, pure application software is built from a set of basic building ... -
Million-Point Sculptures
(Blackwell Science Ltd and the Eurographics Association, 1991)Visually interesting chaotic attractors resembling sculpture are described. -
MOVE-X: A System for Combining Video Films and Computer Animation
(Eurographics Association, 1991)The objective of the presented project was to implement a system for the visualization of buildings. The system is used to create movies of buildings and interior rooms before they are built. For a realistic impression of ...