Accession Number:

ADP000157

Title:

Simplified Scene Modeling Using Curved Surfaces and Texturing,

Descriptive Note:

Corporate Author:

GRUMMAN AEROSPACE CORP BETHPAGE NY

Personal Author(s):

Report Date:

1982-01-01

Pagination or Media Count:

7.0

Abstract:

Constructing a scene data base for current computer image generation systems is a costly and time-consuming task. Thousands of edges must be defined by positioning the end points, or vertices, of each edge. In addition, edges bounding a common surface or face must be linked in a list. Data for each face must include information for a normal vector, and data for faces representing curved objects must include information for normal interpolation to simulate smooth shading across the object. This paper describes a more efficient scene model that is earlier to construct and yet produces a more faithful representation of the real world. Scene geometry is modeled by quadric surface bounded by planes. Scene detail is modeled by a mathematical texturing function which modulates surface shading intensity and translucence. The paper describes how the new model simplifies modeling terrain, cultural features, moving targets, and special effects. Author

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE