Statistics on Temporal Changes of Sparse Coding Coefficients in Spatial Pyramids for Human Action Recognition.
Yang LiJunyong YeTongqing WangShijian HuangPublished in: IEICE Trans. Inf. Syst. (2015)
Keyphrases
- sparse coding
- linear combination
- basis vectors
- dictionary learning
- reconstruction error
- sparse representation
- natural images
- sparsity constraints
- image representation
- image classification
- discriminative power
- spatial pyramid matching
- generative model
- image patches
- spatial information
- multiresolution
- unsupervised learning
- natural image statistics
- high dimensional
- single image super resolution
- sparse coefficients
- visual words
- feature space
- sparse codes
- action recognition
- small number
- object category recognition
- data sets