Spectral Gradient: A Material Descriptor Invariant to Geometry and Incident Illumination.
Elli AngelopoulouSang Wook LeeRuzena BajcsyPublished in: ICCV (1999)
Keyphrases
- planar objects
- illumination invariant recognition
- material properties
- illumination correction
- image transformations
- viewing geometry
- orientation histogram
- object geometry
- color images
- projective geometry
- scene geometry
- spectral reflectance
- gradient orientation
- affine invariant
- reflectance properties
- affine transformation
- three dimensional
- d objects
- illumination conditions
- action recognition
- single image
- realistic rendering
- invariant features
- keypoints
- color texture
- shape descriptors
- discriminative power
- invariant descriptors
- feature extraction
- image descriptors
- real scenes
- invariant representations
- light source
- image retrieval
- object recognition
- linear subspace
- moment invariants
- color constancy
- partial occlusion
- local binary pattern
- photometric information
- lighting conditions
- edge detection
- geometric and photometric transformations
- multiscale