Virtual dictionary based kernel sparse representation for face recognition.

Zizhu Fan Da Zhang Xin Wang Qi Zhu Yuan-Fang Wang

Published in: Pattern Recognit. (2018)

Keyphrases

sparse representation
face recognition
regularized least squares
dictionary learning
sparse coding
signal processing
image patches
joint optimization
image classification

face images
test images
object tracking
random projections
negative matrix factorization
kernel function
subspace learning
compressed sensing
sparse approximations

kernel methods
sparsity constraints
linear discriminant analysis
high dimensional data
feature space
image representation
dimensionality reduction
gabor features
pattern recognition

norm minimization
machine learning
data sets
principal component analysis
reproducing kernel hilbert space
denoising
feature analysis
face recognition systems
feature extraction