On the use of hemispherical harmonics for modeling images of objects under unknown distant illumination.
Shireen Y. ElhabianHam M. RaraAly A. FaragPublished in: ICIP (2011)
Keyphrases
- viewing angle
- viewing conditions
- lighting conditions
- illumination conditions
- input image
- imaging conditions
- multiple objects
- outdoor scenes
- partial occlusion
- image database
- camera viewpoint
- spatial relationships
- image retrieval
- individual objects
- image pixels
- target object
- real world objects
- test images
- real world scenes
- single image
- complex scenes
- bounding box
- varying illumination
- object motion
- pixel intensities
- real objects
- image registration
- textured objects
- transformed images
- three dimensional
- cast shadows
- global illumination
- illumination direction
- illumination correction
- varying illumination conditions
- background clutter
- object recognition
- image regions
- object geometry
- geometric constraints
- raw image
- image data
- point light source
- feature points
- d objects
- image features
- object shape
- object segmentation
- lighting direction
- viewing position
- viewpoint
- computer graphics
- surface reflectance
- reflectance properties
- high frequency
- light source
- image matching
- object classes