Blockwise coordinate descent schemes for sparse representation.
Bao-Di LiuYu-Xiong WangBin ShenYu-Jin ZhangYanjiang WangPublished in: ICASSP (2014)
Keyphrases
- sparse representation
- dictionary learning
- sparse coding
- image patches
- image classification
- face recognition
- random projections
- reconstruction error
- compressive sensing
- signal processing
- image representation
- sparse approximations
- piecewise smooth
- joint optimization
- high dimensional data
- compressed sensing
- regularized least squares
- test images
- decision trees
- computer vision
- sparse reconstruction
- group sparsity
- data sets
- machine learning
- sparsity constraints