| Publication Type |
Technical report |
| School or College |
College of Engineering |
| Department |
Computing, School of |
| Creator |
Catmull, Edwin E. |
| Title |
Subdivision algorithm for computer display of curved surfaces |
| Date |
1974 |
| Description |
Abstract: 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 |
| Publisher |
University of Utah |
| Subject |
Curved surfaces; Computer shaded pictures; Curved patches |
| Subject LCSH |
Curves--Computer simulation; Surfaces--Computer simulation; Computer-aided design; Computer graphics--Research; Three-dimensional imaging--Research |
| Language |
eng |
| Series |
University of Utah Computer Science Technical Report |
| Relation is Part of |
ARPANET |
| Format Medium |
application/pdf |
| Format Extent |
81,015,338 bytes) |
| File Name |
Catmull-A_Subdivision_Algorithm.pdf |
| Conversion Specifications |
Original scanned with Kirtas 2400 and saved as 400 ppi uncompressed TIFF. PDF generated by LIMB™ for CONTENTdm display |
| ARK |
ark:/87278/s6q840c7 |
| Setname |
ir_computersa |
| ID |
106931 |
| Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6q840c7 |
