Estimating Specular Roughness and Anisotropy from Second Order Spherical Gradient Illumination.
Abhijeet GhoshTongbo ChenPieter PeersCyrus A. WilsonPaul E. DebevecPublished in: Comput. Graph. Forum (2009)
Keyphrases
- surface roughness
- specular reflection
- light source
- single image
- directional derivatives
- lighting conditions
- tensor scale
- surface reflectance
- dichromatic reflection model
- illumination conditions
- spherical harmonics
- photometric stereo
- specular highlights
- higher order
- object surface
- reflectance properties
- subsurface scattering
- diffuse reflection
- point light source
- diffuse reflectance
- three dimensional
- varying illumination
- scene geometry
- illumination direction
- edge detection
- image filtering
- stereo pair
- color constancy
- reflection components