A Toolbox for Shading

Abstract

IDA Paper P-2354, A Toolbox for Shading, documents the research performed under an internal research and development program, the Central Research Program (CRP) 9000-502. The research probed the shortcomings of existing shading algorithms. The investigation yielded seven new techniques to render more realistic images at a modest increase in computational costs. Specifically, quadratic interpolation of intensities and adaptive subdivision of surfaces are proposed to generate smoother intensity surfaces and thereby reduce Mach banding. Techniques are introduced to locate highlights and adaptively subdivide surfaces to capture the intensity peaks associated with specular reflection. Ambient cut-off and adaptive subdivision are applied to accurately render diffuse boundaries. Tradeoffs are examined so that a subset of this toolbox of shading techniques can be chosen to most effectively satisfy the processing and realism requirements of a given image-generating application and environment.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1990
Accession Number
ADA220847

Entities

People

  • Michael R. Kappel

Organizations

  • Institute for Defense Analyses

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • C Programming Language
  • Computer Graphics
  • Computer Programming
  • Computer Programs
  • Computer Science
  • Computers
  • Coordinate Systems
  • Floating Point Operations
  • Geometry
  • Mathematical Models
  • Numerical Analysis
  • Reflection
  • Specular Reflection
  • Three Dimensional
  • Two Dimensional
  • Uncertainty Principle

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Spectroscopy.
  • Systems Analysis and Design