A subdivision algorithm for computer display of curved surfaces (CSTD-74-006)

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Publication Type report
School or College University Libraries
Department J. Willard Marriott Library
Creator Catmull, Edwin
Title A subdivision algorithm for computer display of curved surfaces (CSTD-74-006)
Date 1974-12
Description This report presents a method for producing computer shaded pictures of curved surfaces. Three-dimensional curved patches are used, as contrasted with conventional methods using polygons. The method subdivides a patch into successively smaller subpatches until a subpatch is as small as a raster-element, at which time it can be displayed. In general this method could be very time consuming because of the great number of subdivisions that must take place; however, there is at least one very useful class of patches -- the bicubic patch -- that can be subdivided very quickly. Pictures produced with the method accurately portray the shading and silhouette of curved surfaces. In addition, photographs can be "mapped" onto patches thus providing a means for putting texture on computer-generated pictures.
Type Text
Subject Computer animation
Language eng
Rights Management Edwin Catmull
Format Medium application/pdf
Format Extent 97,936,322 Bytes
Identifier uspace/id/10694
ARK ark:/87278/s6wt23bb
Setname ir_uspace
Date Created 2014-09-25
Date Modified 2021-05-06
ID 712681
Reference URL https://collections.lib.utah.edu/ark:/87278/s6wt23bb
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