Space-frequency domain based joint dictionary learning and collaborative representation for face recognition.
Yali PengLiping LiShigang LiuTao LeiPublished in: Signal Process. (2018)
Keyphrases
- frequency domain
- dictionary learning
- sparse representation
- face recognition
- dictionary learning for sparse
- spatial domain
- fourier transform
- sparse coding
- sparse representation based classification
- feature extraction
- image representation
- denoising
- subband
- prolate spheroidal
- low dimensional
- image processing
- power spectra
- data sets
- unsupervised learning
- machine learning
- spectral signatures
- principal component analysis
- image classification
- probabilistic model
- optical flow
- pattern recognition
- negative matrix factorization
- test images
- filter bank
- face images
- dimensionality reduction