Reflection Models

Topics:

• Definition of reflection
• Properties of reflection
• Types of reflection functions: specular, diffuse, glossy
• Materials
• The BRDF and BTDF
• The reflection equation
• The BSSRDF
• Measuring BRDF's
• Linearity of reflection
• BRDF symmetry (sometimes called reciprocity)
• BTDF assymetry
• Isotropy
• Conservation of enerty
• Reflectance
• Ideal diffuse reflection
• Ideal specular reflection
• Snell's law and ideal specular transmission
• Scaling of radiance at a dielectric interface
• The Fresnel effect
• The Cook-Torrance reflection model