Precision Normals (Beyond Phong)
Links to Files
Permanent Link
Author/Creator
Author/Creator ORCID
Date
Type of Work
Department
Program
Citation of Original Publication
Rights
This item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.
Subjects
Abstract
Almost all graphics architectures today support Gouraud shading, linearcolor interpolation between vertices; system designers aim toward aPhong shading model, linear interpolants of surface normals with alighting model that supports both diffuse and specular components, as asuperior means of rendering accurate images. However, the Phongmodel still retains serious artifacts. In this paper, we point out theshortcomings of linear interpolation of normals, and present a surfaceinterrogation method for parametrically defined surfaces.