Dictionary Refinement for Compressive Sensing Based Device-Free Localization via the Variational EM Algorithm.
Dongping YuYan GuoNing LiDagang FangPublished in: IEEE Access (2016)
Keyphrases
- em algorithm
- compressive sensing
- sparse representation
- expectation maximization
- maximum likelihood
- mixture model
- sum product algorithm
- random projections
- image segmentation
- generative model
- signal processing
- dictionary learning
- orthogonal matching pursuit
- image representation
- gaussian mixture model
- image classification
- sparse coding
- face recognition
- probabilistic model
- multiscale
- maximum a posteriori
- image patches
- compressed sensing
- optical flow
- hyperparameters
- computer vision