Dictionary learning and sparse coding for unsupervised clustering.
Pablo SprechmannGuillermo SapiroPublished in: ICASSP (2010)
Keyphrases
- dictionary learning
- sparse coding
- sparse representation
- natural images
- linear combination
- image classification
- group sparsity
- unsupervised learning
- generative model
- object category recognition
- single image super resolution
- image patches
- clustering method
- image representation
- sparse codes
- visual words
- k means
- spectral clustering
- high dimensional
- higher order
- feature space
- data analysis
- computer vision