Page 18

Contents | 18 of 79

Download PDF | | Reference URL | Gallery View | Parent Record

Publication Type	technical report
School or College	College of Engineering
Department	Computing, School of
Creator	Wilcox, Christopher G.
Title	Surface perturbations for texture mapping
Date	1987-03
Description	This thesis present a new method of texture mapping which can be used in conjunction with the above techniques to improve textured images. The proposed method uses surface perturbations for texture mapping. Surface perturbations enhance traditional texture mapping techniques by allowing the texture map to alter the shape of the object. The technique works by developing a model of the actual three dimensional textured surface. The model is then used to create a surface perturbation map that can be directly applied to the model during rendering to create very realistic texture. This thesis presents surface perturbation texture mapping in detail and discusses the problems and promises of the new technique.
Type	Text
Publisher	University of Utah
Subject	surface perturbations; texture mapping; computers
Subject LCSH	Texture mapping; Computer graphics; Surfaces, Models of
Language	eng
Bibliographic Citation	Wilcox, C. G. (1987). Surface perturbations for texture mapping.
Series	University of Utah Computer Science Technical Report
Relation is Part of	ARPANET
Format Medium	application/pdf
Format Extent	161,769 Bytes
File Name	Wilcox-Surface_Perturbations.pdf
Conversion Specifications	Original scanned with Kirtas 2400 and saved as 400 ppi uncompressed TIFF. PDF generated by Adobe Acrobat Pro X for CONTENTdm display
ARK	ark:/87278/s6sj3kmd
Setname	ir_computersa
ID	93054
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6sj3kmd

Page Metadata

Title	Page 18
Setname	ir_computersa
ID	92992
OCR Text	Show VERTEX = RECORD point : vector; normal : vector; next : vertexptr; END; POLYGON= RECORD surface : attributesptr; vertices : vertexptr; next : polygonptr; END; Figure 3: Representation of a Polygonal Object 2.1.3 Representation of Surface Attributes g The surface attributes for an object include color values, shading parameters, and texture features. The color value represents the red, green, and blue corn-ponents of the colors on a raster display and are ignored if the the object has a color texture map. The reflection and refraction values specify the percentage of light that is reflected from the object or transmitted through the object. The index contains the specific index of refraction for the object. An object also has a pointer to several texture maps: color variation, normal perturbation, or surface displacement. If any of these pointers are nil then no such texture map exists for the object. Surface attributes are stored in the data structure shown in Figure 4.
Reference URL	https://collections.lib.utah.edu/ark:/87278/s6sj3kmd/92992