Effect of top-down connections in Hierarchical Sparse Coding.
Victor BoutinAngelo FranciosiniFranck RuffierLaurent PerrinetPublished in: CoRR (2020)
Keyphrases
- sparse coding
- dictionary learning
- unsupervised learning
- sparse representation
- natural images
- image classification
- linear combination
- discriminative power
- single image super resolution
- generative model
- person re identification
- image representation
- object category recognition
- sparse codes
- deep belief networks
- feature space
- group sparsity
- discriminative dictionary
- alternating optimization
- image patches
- high dimensional
- image segmentation
- visual words
- denoising
- feature extraction
- face recognition
- feature selection