Dictionaries for sparse representation and recovery of reflectances.
Steven LanselManu ParmarBrian A. WandellPublished in: Computational Imaging (2009)
Keyphrases
- sparse representation
- dictionary learning
- sparse coding
- color constancy
- image patches
- image classification
- high dimensional data
- joint optimization
- reconstruction error
- face recognition
- compressive sensing
- test images
- sparse approximations
- dimensionality reduction
- signal processing
- negative matrix factorization
- compressed sensing
- sparse reconstruction
- learned dictionary
- image representation
- sparse learning
- machine learning
- regularized least squares
- lighting conditions
- sparse codes
- high dimensional
- sparsity constraints
- norm minimization
- natural images
- high resolution
- piecewise smooth
- input image
- denoising
- random projections
- multiscale
- surface normals