Graph regularized nonnegative sparse coding using incoherent dictionary for approximate nearest neighbor search.
Yupei ZhangMing XiangBo YangPublished in: Pattern Recognit. (2017)
Keyphrases
- sparse coding
- sparse non negative
- sparse representation
- approximate nearest neighbor search
- sparse codes
- dictionary learning
- natural images
- sparsity constraints
- image classification
- discriminative dictionary
- linear combination
- discriminative power
- nearest neighbor
- image representation
- image patches
- metric space
- unsupervised learning
- face recognition
- feature space
- hash functions
- generative model
- visual words
- high dimensional
- high dimensional data
- signal processing
- nearest neighbor search
- test images
- locality sensitive hashing
- objective function
- image retrieval
- sparse representation based classification
- object recognition
- dimensionality reduction
- kd tree
- image features
- super resolution
- higher order
- image processing
- co occurrence