Convolutional sparse dictionary learning with smoothed l0 norm and projected gradient descent.
Kazuki KitajimaAkira SuganoYoshimitsu KurokiPublished in: ISPACS (2019)
Keyphrases
- dictionary learning
- sparse coding
- sparse representation
- natural images
- linear combination
- group sparsity
- objective function
- image classification
- sparse codes
- unsupervised learning
- image representation
- generative model
- object category recognition
- image patches
- sparsity constraints
- feature space
- dictionary learning for sparse
- visual words
- loss function
- compressive sensing
- face recognition
- signal processing
- multiscale
- denoising
- image features
- active learning
- discriminative dictionary