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Now showing items 11-20 of 40
Tessellation of Curved Surfaces under Highly Varying Transformations
(Eurographics Association, 1991)
We pursue the problem of step size determination for tessellating arbitrary degree polynomial and rational Bezier patches, under highly varying modeling and viewing transformations, to within post-viewing size and/or ...
Timewarps: A Temporal Reparameterization Paradigm for Parametric Animation
(Eurographics Association, 1991)
The ability to reparameterize the temporal axis in an animated sequence is a powerful and underexplored tool. Timewarps are described as extensions to previous work and the advantages of this tool are outlined. Timewarps ...
Constructive Page Description Opening Up the Prepress World
(Eurographics Association, 1991)
Constructive Page Description (CPD) is an overall approach allowing different kinds of data to be exchanged between a variety of systems and manipulated in arbitrary system environments. Fully changeable pages, which keep ...
Solid-Interpolating Deformations: Construction and animation of PIPs
(Eurographics Association, 1991)
Computer programs that simulate the deformations of geometric shapes have played a key role in the increasing popularity of software tools for artistic animation. Previously published techniques for specifying and animating ...
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 ...
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 ...
Animation of Landscapes Using Satellite Imagery
(Eurographics Association, 1991)
The paper presents methods to animate synthetic landscapes. The modeling of the landscape, the interactive specification of the flight path and the simulation of an explosion are described. The landscape is visualized by ...
Variable-Radius Blending by Using Gregory Patches in Geo- metric Modeling
(Eurographics Association, 1991)
Blending surfaces, which connect two curved surfaces smoothly, often appear in geometric modeling. Many of the blending surfaces are variable-radius blends. Variableradius blending surfaces are very important in the design ...
Radiosity for Furry Surfaces
(Eurographics Association, 1991)
Though radiosity method is an advanced rendering technique of global illumination, it is still not sufficiently to cope with many natural phenonmena such as furry surfaces. The rendering of furry surfaces has been a long ...
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 ...