Action Recognition Using Sparse Representation on Covariance Manifolds of Optical Flow.
Kai GuoPrakash IshwarJanusz KonradPublished in: AVSS (2010)
Keyphrases
- sparse representation
- optical flow
- manifold learning
- dictionary learning
- sparse coding
- high dimensional data
- face recognition
- image classification
- compressive sensing
- signal processing
- dimensionality reduction
- image representation
- compressed sensing
- joint optimization
- negative matrix factorization
- random projections
- object tracking
- image patches
- sparse approximations
- low dimensional
- image sequences
- computer vision
- covariance matrix
- high dimensional
- flow field
- piecewise smooth
- data sets
- sparse reconstruction
- data points
- test images
- norm minimization
- decision trees
- object recognition
- regularized least squares
- neural network
- three dimensional
- data analysis
- feature space
- knn
- facial expressions