Sparse Approximation by Matching Pursuit Using Shift-Invariant Dictionary.
Karl SkrettingKjersti EnganPublished in: SCIA (1) (2017)
Keyphrases
- shift invariant
- matching pursuit
- pursuit algorithm
- sparse approximation
- sparse coding
- image coding
- basis functions
- sparse representation
- linear combination
- wavelet coefficients
- natural images
- image classification
- image representation
- subband
- visual words
- machine learning
- unsupervised learning
- wavelet transform
- filter bank
- image compression
- road signs
- multiscale