Keyphrases
- lighting conditions
- input image
- multiscale
- image data
- image features
- image analysis
- single image
- image classification
- template matching
- image content
- segmentation method
- image retrieval
- image segmentation
- illumination conditions
- image representation
- image matching
- image pixels
- image regions
- high resolution
- image structure
- test images
- face recognition
- image set
- image gradient
- region of interest
- spatial information
- edge detection
- similarity measure
- image collections
- pixel values
- low level
- edge map
- cast shadows
- distortion correction
- gradient domain
- lighting variations
- color temperature