Showing papers in "Computers & Graphics in 1987"

TL;DR: A theory for cross-sectional design of B-spline surfaces for CAD is described, which includes skinning, sweeping, swinging and interpolation, along with means of interaction.

TL;DR: This paper presents an expanded algorithm that not only handles the mappings of multiple contours per plane and partial contour mappings, but also allows human interaction to resolve mapping problems.

TL;DR: In this article, a method for adaptively controlling the number of required samples to the complexity of the picture is presented, where the quality of the obtained picture can be controlled by two wellunderstandable parameters, these parameters define an error interval size and the probability that a pixel lies within it.

TL;DR: The technique described in this paper is a new encoding approach, which encodes the end points of a line, and based on the line code, appropriate clipping actions are performed.

TL;DR: Based on this condition and the invariance of the geodesic curvature during isometric mapping, algorithms for development of these two classes of ruled surfaces have been developed and have been found to be suitable for developing computer programs so as to get the development of conical, cylindrical and convolute surfaces.

TL;DR: Portraits of time-discrete phase planes associated with the cyclic system are presented, where f is a frequency modulation term of the general form, and the resulting trajectories reveal a visually striking and intricate class of patterns.

TL;DR: By using SGML markup for both graphics and text, a document processing application can achieve a more uniform treatment and tighter coupling between these two types of materials.

TL;DR: A basic strategy for testing GKS implementations is outlined and progress towards the development of a test suite is reported, which is crucial to the success of GKS as an international standard for computer graphics.

TL;DR: Introduction au projet de norme ISO DIS8613 concernant l'architecture des documents de bureau, comment les informations graphiques ont ete incluses dans cette norme.

TL;DR: A linguistic model for two system elements, the knowledge base and recognition strategy, being an extension of pattern recognition approaches, is outlined, which consists of a powerful object specification language and a simultaneous syntactic-semantic analysis in this language.

TL;DR: A new geometric hidden-line algorithm applicable to complex three-dimensional vector graphics scenes that has advantages of generality, coding simplicity, and is particularly appropriate to parallel processing.

TL;DR: Algorithms are described for the computer graphics rendering of a particular class of chaotic structures created from complex iteration for one small region of the complex plane and on nonstandard convergence tests.

TL;DR: An interactive molecular data display program, called WAALSURF, implemented on two different personal computers, IBM's PC-AT equipped with a Professional Graphics Adapter and Commodore's Amiga, allowing the inspection of data bases containing data of molecules with some thousand atoms each.

TL;DR: One of the main contributions of this paper is an explicit, carefully programmed procedure, saving the reader the need for a laborious reconstruction based on a sketch of the method.

TL;DR: It is shown how sophisticated colour graphics techniques can be incorporated within an image display system to produce realistic three-dimensional scenes.

TL;DR: Abstract Systems for generating chinese stylistic painting are described, where basic sets of parameterized primetives for drawing writing-brush-like strokes are build and extensive sets of procedure for representing many of elements of pictures are built.

TL;DR: Interactive graphics provides transportation engineers with the means to merge their needs for computer-based methods and models with their desires to use and produce maps and diagrams as a principal means of communication.

TL;DR: The GKS-3D/PHIGS viewing pipeline as mentioned in this paper provides a view pipeline to generate the parallel or perspective view required for a 3D object, based on the GKS 3D standard.

TL;DR: This paper treats problems and proposes a solution for handling of fonts for the XPS-700 Xerox Publishing System, which uses a variety of different typefaces.

TL;DR: XGKS as discussed by the authors is the name of a GKS 7.2 implementation which is under development at the Computer and Automation Institute of the Hungarian Academy of Sciences (MAA).

TL;DR: An interactive system is presented which allows flexible shape preserving cubic spline interpolation by means of an interactive adjustment procedure for which the total amount in arithmetic operation is only 0(n).

TL;DR: The Integrated Display Controller (IDC) as mentioned in this paper is a display controller to accelerate the updating of the frame buffer in raster displays, which is designed for use in VLSI-design workstations where a great quantity of data has to be manipulated.

TL;DR: A semantics of bit-mapped graphics is presented, which carefully distinguishes among scenes, bit-maps, and images, and is used to prove some interesting results regarding the 2D rendering of scenes into images.

TL;DR: GKS-3D and PHIGS as discussed by the authors provide functions for three-dimensional graphics programming, and the mapping of user-defined 3-D graphical output onto physical graphics devices is performed by an output pipeline.

TL;DR: Investigation of the N -dimensional hypercube leads to the construction of a ternary code for representing the hypercube and the interconnection between levels of the polytopal mesh.

TL;DR: A program for educational use is described which offers various ways to represent a matrix on a graphics screen; techniques of monitoring the run of existing programs without any changes in program code are discussed.

TL;DR: Reversible data compression of computer-generated digital color pictures is studied and a simple algorithm called “skip-on-equal” is shown to result in a compression ratio around six.