Sparse image representation by discrete cosine/spline based dictionaries
James BowleyLaura Rebollo-NeiraPublished in: CoRR (2009)
Keyphrases
- image representation
- sparse representation
- discrete cosine
- transform domain
- sparse coding
- image classification
- multiscale
- compressive sensing
- bag of words
- feature space
- object recognition
- image patches
- spatial domain
- transform coding
- quadtree
- discrete fourier transform
- image retrieval
- coarse to fine
- image features
- visual words
- visual features
- bag of visual words
- transform coefficients
- coding scheme
- test images
- radon transform
- image processing
- image coding
- feature extraction