Efficient Sparse Coding Using Hierarchical Riemannian Pursuit.

Ye Xue Vincent K. N. Lau Songfu Cai

Published in: IEEE Trans. Signal Process. (2021)

Keyphrases

sparse coding
dictionary learning
sparse representation
natural images
image classification
unsupervised learning
generative model
linear combination
sparse codes
image representation
feature space
high dimensional
object category recognition
feature extraction
small number
visual words