Keyphrases
- shape from shading
- light source
- surface reflectance
- intensity images
- single image
- shape recovery
- multiple images
- lighting direction
- photometric stereo
- surface normals
- surface orientation
- input image
- lighting conditions
- illumination conditions
- facial shape
- perspective projection
- intrinsic images
- reflectance model
- image irradiance
- three dimensional
- point light source
- multiple light sources
- specular surfaces
- provably convergent
- lambertian reflectance
- shape reconstruction
- illumination direction
- viewing conditions
- illumination insensitive
- diffuse reflectance
- real objects
- photometric information
- lambertian surface
- smooth surfaces
- intensity values
- color constancy
- viewpoint