Learning image representations from the pixel level via hierarchical sparse coding.
Kai YuYuanqing LinJohn D. LaffertyPublished in: CVPR (2011)
Keyphrases
- sparse coding
- image representation
- dictionary learning
- image classification
- sparse representation
- pixel level
- unsupervised learning
- natural images
- learning algorithm
- linear combination
- active learning
- image features
- supervised learning
- bag of words
- visual recognition
- data points
- high dimensional
- multiscale
- image sequences
- superpixels
- reconstruction error
- signal processing
- higher order
- co occurrence
- small number
- object recognition
- image segmentation
- computer vision