Manifold based sparse representation for facial understanding in natural images.
Raymond W. PtuchaAndreas E. SavakisPublished in: Image Vis. Comput. (2013)
Keyphrases
- natural images
- sparse representation
- sparse coding
- image patches
- compressed sensing
- face recognition
- dictionary learning
- natural scenes
- multiscale
- object recognition
- higher order
- denoising
- image denoising
- test images
- input image
- random projections
- facial expressions
- superpixels
- image representation
- statistics of natural images
- low dimensional
- face images
- facial features
- natural image patches
- high dimensional data
- image classification
- signal processing
- markov random field
- single image
- feature points
- high dimensional
- image segmentation
- neural network
- data sets