Facial Micro-Expression Recognition Using Quaternion-Based Sparse Representation.
Hang YangQingshan WangQi WangPeng LiuWei HuangPublished in: ICCCN (2020)
Keyphrases
- sparse representation
- face recognition
- expression recognition
- dictionary learning
- facial animation
- facial expressions
- sparse coding
- face images
- fourier transform
- signal processing
- human faces
- facial images
- image classification
- facial expression recognition
- compressive sensing
- joint optimization
- object tracking
- reconstruction error
- image patches
- negative matrix factorization
- facial features
- dimensionality reduction
- random projections
- face detection
- image representation
- compressed sensing
- facial surface
- regularized least squares
- sparse reconstruction
- neural network
- test images
- high dimensional data
- feature extraction
- norm minimization
- sparse approximations
- unsupervised learning
- principal component analysis
- sparse codes
- video sequences
- data mining