PCA-based dictionary building for accurate facial expression recognition via sparse representation.
Mohammad Reza MohammadiEmad FatemizadehMohammad H. MahoorPublished in: J. Vis. Commun. Image Represent. (2014)
Keyphrases
- sparse representation
- facial expression recognition
- face recognition
- facial expressions
- dictionary learning
- sparse coding
- human computer interaction
- principal component analysis
- expression recognition
- feature extraction
- image classification
- dimensionality reduction
- local binary pattern
- signal processing
- image patches
- human faces
- compressive sensing
- joint optimization
- computer vision
- manifold learning
- sparse approximations
- object tracking
- facial images
- random projections
- subspace learning
- high dimensional data
- active appearance models
- image representation
- sparse coefficients
- feature space
- multiscale
- data mining
- image super resolution
- data sets