Keyphrases
- color invariants
- object geometry
- invariant representations
- illumination invariant
- illumination conditions
- varying illumination
- background subtraction
- lighting conditions
- color constancy
- quasi invariant
- face recognition under varying
- single image
- invariant features
- object recognition
- global illumination
- moment invariants
- imaging conditions
- color images
- robust face recognition
- partial occlusion
- image registration
- viewpoint