An Investigation of Kernels for Shading of Elevation Data,

Abstract

This report examines the results of enhancing displays of an elevation array by using mathematical shading. The variable examined in this report is the shape of the primitive region by which shading is calculated. This primitive region is called a kernel. Three kernels are examined; triangles, quadrilaterals (actually squares), and a hybrid shape that seemed as though it might have fewer artifacts. The result is that shaded quadrilaterals seem to be more isotropic and to have fewer artifacts than the other shapes examined. Shading using quadrilateral kernels is also the easiest to calculate. All shading was done using the Gouraud technique. (AN)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1995
Accession Number
ADA296595

Entities

People

  • Michael M. Mcdonnell

Tags

DTIC Thesaurus Topics

  • Army
  • Army Corps Of Engineers
  • Artifacts
  • Artificial Intelligence
  • Asymmetry
  • Computational Science
  • Computer Graphics
  • Elevation
  • Engineering
  • Geometry
  • Graphics
  • Light Sources
  • Models
  • Numbers
  • Specular Reflection
  • Three Dimensional
  • Triangles

Readers

  • Calculus or Mathematical Analysis
  • Computer Vision.