Facial Expression Recognition via Non-Negative Least-Squares Sparse Coding.
Ying ChenShiqing ZhangXiaoming ZhaoPublished in: Inf. (2014)
Keyphrases
- facial expression recognition
- sparse coding
- least squares
- sparse representation
- natural images
- dictionary learning
- facial expressions
- image classification
- human computer interaction
- face recognition
- unsupervised learning
- generative model
- linear combination
- feature space
- feature extraction
- human faces
- local binary pattern
- image representation
- facial features
- facial images
- visual words
- optical flow
- high dimensional
- subspace learning
- data sets
- image patches
- denoising
- training data
- test images
- bag of words
- video sequences
- pattern recognition
- prior knowledge
- higher order
- co occurrence
- supervised learning