Orthogonal matching pursuit: recursive function approximation with applications to wavelet decomposition

  title={Orthogonal matching pursuit: recursive function approximation with applications to wavelet decomposition},
  author={Yagyensh C. Pati and Ramin Rezaiifar and Perinkulam S. Krishnaprasad},
  journal={Proceedings of 27th Asilomar Conference on Signals, Systems and Computers},
  pages={40-44 vol.1}
We describe a recursive algorithm to compute representations of functions with respect to nonorthogonal and possibly overcomplete dictionaries of elementary building blocks e.g. affine (wavelet) frames. We propose a modification to the matching pursuit algorithm of Mallat and Zhang (1992) that maintains full backward orthogonality of the residual (error) at every step and thereby leads to improved convergence. We refer to this modified algorithm as orthogonal matching pursuit (OMP). It is shown… 

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