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Construction of multiresolution triangular B-Spline surfaces using hexagonal filters
(1999)CS technical reportReport -
A new method to approximate the volume rendering equation using wavelet bases and piecewise polynomials
(1994)ETH, Eidgenössische Technische Hochschule Zürich, Departement Informatik, Institut für InformationssystemeIn the following paper we describe a new generic method to find an approximate solution for the volume rendering equation using hierarchical, orthonormal wavelet basis functions. The approach is based on the idea that an initial volume data set can be decomposed into a pyramidal representation by means of a 3D wavelet transform. Once the wavelet function is described analytically, it is possible to approximate the volume density function. ...Report -
Two methods for wavelet-based volume rendering
(1996)Comp. Sc. Dept. internal reportThis paper describes two methods for wavelet domain rendering of volume data sets, which base on entire different paradigms for the approximation of the underlying volume rendering equation. The first approach comprises a ray-tracing algorithm for cardinal B-spline wavelet representations of both color and opacity values and carries out high quality images. We especially propose elaborated integration and evaluation schemes, where the ...Report -
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Wiener splines
(1997)ETH-CS-internal reportWe describe an alternative way of constructing interpolating B-spline curves, surfaces or volumes in Fourier space which can be used for visualization. In our approach the interpolation problem is considered from a signal processing point of view and is reduced to finding an inverse B-spline filter sequence. The Fourier approach encompasses some advantageous features, such as successive approximation, compression, fast convolution and ...Report -
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A framework for facial surgery simulation
(1999)CS technical report / ETH ZurichThe accurate prediction of the post-surgical facial shape is of paramount importance for surgical planning in facial surgery. In this paper we present a framework for facial surgery simulation which is based on volumetric finite element modeling. We contrast conventional procedures for surgical planning against our system by accompanying a patient during the entire process of planning, medical treatment and simulation. In various preprocessing ...Report -
Compression domain volume rendering for distributed environments
(1997)Internal report / Computer Science Department, ETH ZürichThis paper describes a method for volume data compression and rendering which bases on wavelet splats. The underlying concept is especially designed for distributed and networked applications, where we assume a remote server to maintain large scale volume data sets, being inspected, browsed through and rendered interactively by a local client. Therefore, we encode the server‘s volume data using a newly designed wavelet based volume ...Report -
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Simulating facial surgery using finite element models
(1996)Technischer Bericht / Eidgenössische Technische Hochschule, Departement InformatikReport