Local illumination III: texture mapping

CS 248 - Introduction to Computer Graphics
Spring Quarter, 1995
Marc Levoy
Lecture notes for Tuesday, June 6

Table of contents:

• Texture mapping
  • Coordinate spaces
  • The compound mapping
  • Inverting the compound mapping
  • Resampling
• What are textures good for? (slide show!)
  • color - e.g. the kd in a Phong model
  • opacity - can be used for surprising 3D effects (Gardner's ellipsoidal clouds)
  • mixing - a selector between two other textures or two shading models (Cook's shade trees)
  • bump mapping - the texture perturbs the surface normals
  • displacement mapping - the texture perturbs the surface geometry (also in Cook's shade trees)
    Requires shading before visibility
  • generative modeling - the texture decides where primitives are placed (Reeves's trees)
    May be non-invertible, so ray tracing becomes hard
  • solid texturing - consistent texture across the surface of a solid (Perlin's marble vase)
  • volume rendering - color and opacity throughout a volume (Kajiya's teddy bear)

Press here for part I of this lecture.
Press here for part II of this lecture.