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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
271

High performance algorithms for texture mapping

Demirer, Mehmet January 1995 (has links)
No description available.
272

Shape-preserving algorithms for curve and surface design

Iqbal, Rafhat January 1998 (has links)
This thesis investigates, develops and implements algorithms for shape- preserving curve and surface design that aim to reflect the shape characteristics of the underlying geometry by achieving a visually pleasing interpolant to a set of data points in one or two dimensions. All considered algorithms are local and useful in computer graphics applications. The thesis begins with an introduction to existing methods which attempt to solve the shape-preserving 1 curve interpolation problem using C cubic and quadratic splines. Next, a new generalized slope estimation method involving a parameter t, which is used to control the size of the estimated slope and, in turn, produces a more visually pleasing shape of the resulting curve, is proposed. Based on this slope generation formula, new automatic and interactive algorithms for constructing 1 shape-preserving curves from C quadratic and cubic splines are developed and demonstrated on a number of data sets. The results of these numerical experiments are also presented. Finally, a method suggested by Roulier which 1 generates C surfaces interpolating arbitrary sets of convex data on rectangular grids is considered in detail and modified to achieve more visually pleasing surfaces. Some numerical examples are given to demonstrate the performance of the method.
273

Development of an active computer vision system for 3 dimensional modelling

Antonis, Jan January 1999 (has links)
No description available.
274

Graphics function standard specification validation with GKS

Fraser, Steven D. January 1987 (has links)
A validation methodology is proposed for natural language software specifications of standard graphics functions. Checks are made for consistency, completeness and lack of ambiguity in data element and function descriptions. Functions and data elements are maintained in a relational database representation. The appropriate checks are performed by sequences of database operations. The relational database manager INGRES was used to support a prototype implementation of the proposed technique. / The methodology supports the development of a scenario-based prototype from the information available in the specification. This permits various function sequences to be checked without implementation of the environment specified. / The application of a prototype implementation of the proposed methodology, to the specification of the GKS software package, demonstrates the practicability of the method. Several inconsistencies in GKS, related to the definition of data elements, have been identified.
275

Duotone Surfaces: Division of a Closed Surface into Exactly Two Regions

Garigipati, Pradeep 03 October 2013 (has links)
In this thesis work, our main motivation is to create computer aided art work which can eventually transform into a sculpting tool. The work was inspired after Taubin’s work on constructing Hamiltonian triangle strips on quadrilateral meshes. We present an algorithm that can divide a closed 2-manifold surface into exactly two regions, bounded from each other by a single continuous curve. We show that this kind of surface division is possible only if the mesh approximation of a given object is a two colorable quadrilateral mesh. For such a quadrilateral mesh, appropriate texturing of the faces of the mesh using a pair of Truchet tiles will give us a Duotone Surface. Catmull-Clark subdivision can convert any given mesh with arbitrary sided polygons into a two colorable quadrilateral mesh. Using such vertex insertion schemes, we modify the mesh and classify the vertices of the new mesh into two sets. By appropriately texturing each face of the mesh such that the color of the vertices of the face match with the colored regions of the corresponding Truchet tile, we can get a continuous curve that splits the surface of the mesh into two regions. Now, coloring the thus obtained two regions with two different colors gives us a Duotone Surface.
276

Generating customized layouts automatically

Wang, Xiaobo January 1995 (has links)
Thesis (Ph. D.)--University of Hawaii at Manoa, 1995. / Includes bibliographical references (leaves 134-138). / Microfiche. / xv, 138 leaves, bound ill. 29 cm
277

Automatic labeling, modeling and recognition for line-drawing interpretation

Chêng, Tsê January 1994 (has links)
Thesis (Ph. D.)--University of Hawaii at Manoa, 1994. / Includes bibliographical references (leaves 181-191). / Microfiche. / xvi, 191 leaves, bound ill. 29 cm
278

A demonstration of the Genigraphics : an interactive videodisc for computer graphics /

Cohen, Ruth. January 1989 (has links)
Thesis (M.F.A.)--Rochester Institute of Technology, 1989. / Includes bibliographical references (leaf 42).
279

Illustrative deformation of volumetric objects and other graphical models

Correa, Carlos D. January 2007 (has links)
Thesis (Ph. D.)--Rutgers University, 2007. / "Graduate Program in Electrical and Computer Engineering." Includes bibliographical references (p. 174-183).
280

A high performance colour graphics display system /

Fang, Chong he. January 1987 (has links) (PDF)
Thesis (M. Sc.)--University of Adelaide, 1988. / Includes bibliographical references (leaves 173-176).

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