Sparse image representations with shift-invariant tree-structured dictionaries.
Makoto NakashizukaHidenari NishiuraYouji IiguniPublished in: ICIP (2009)
Keyphrases
- shift invariant
- image representation
- sparse coding
- sparse representation
- image classification
- multiscale
- feature space
- bag of words
- visual words
- object recognition
- image features
- image patches
- image retrieval
- discrete wavelet transform
- wavelet coefficients
- wavelet domain
- rotation invariant
- dimensionality reduction
- edge preserving
- visual features
- computer vision
- scale space
- image quality
- face recognition
- image segmentation