Duane W. Storti

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This paper describes a new technique that combines numerical optimization methods with triangulation methods for generating mathematical representations of solids from 3D point data. The solid representation obtained takes the form of an algebraic function whose level surface closely approximates the surface described by the data, The algebraic function is(More)
This paper presents a multilevel algorithm to accelerate the numerical solution of thin shell finite element problems de-scribed by subdivision surfaces. Subdivision surfaces have become a widely used geometric representation for general curved three dimensional boundary models and thin shells as they provide a compact and robust framework for mod-eling 3D(More)
The skeleton is a lower-dimensional geometric abstraction that is useful for performing a number of important geometric operations on solid models. In this paper we develop skeleton-based algorithms that demonstrat,e the utility of the skeleton in addressing: (1) 1 evel-of-detail control, the generation of hierarchical representations that preserve overall(More)
This paper explores the concept of using skeletons as the basis for constructing a solid-editing system. Skeletal data (i.e., the skeleton and the associated maximal sphere radii) offers a valid solid representation scheme, and we examine the capability of the skeletal representation to support shape editing operations. In addition to general discussion of(More)
The haptic rendering algorithms for object with implicit surface representation are proposed. The basic rendering algorithm for a regular two-dimensional manifold is used to represent a solid volumetric object. For applications where information about the internal content of an object is concerned, the haptic rendering algorithm for internal content of an(More)
SUMMARY In this paper, we present a simple system of coupled oscillators as a model of pattern generation for jellyfish locomotion. Coupled oscillator models have been successfully applied to model pattern generation in numerous biological systems including jellyfish locomotion, but the previous jellyfish models have required complicated oscillators or(More)