Keyphrases
- sparse codes
- alpha matte
- image classification
- sparse coding
- dictionary learning
- user input
- sparse representation
- image noise
- linear classifiers
- image patches
- foreground and background
- natural images
- bag of words
- foreground objects
- unsupervised learning
- generative model
- image features
- image representation
- visual words
- image processing
- multiscale
- face recognition
- image segmentation