Hyperspectral imagery denoising using covariance matrix estimation based structured sparse coding and intra-cluster filtering.
Lei ZhangWei WeiYanning ZhangCong WangPublished in: IGARSS (2016)
Keyphrases
- covariance matrix
- sparse coding
- denoising
- natural images
- image denoising
- sparse representation
- covariance matrices
- linear combination
- image classification
- image patches
- principal component analysis
- image representation
- sample size
- image processing
- unsupervised learning
- generative model
- feature space
- objective function
- face recognition
- input image
- higher order
- training set
- pattern recognition