Natural signal statistics and sensory gain control

@article{Schwartz2001NaturalSS,
  title={Natural signal statistics and sensory gain control},
  author={Odelia Schwartz and Eero P. Simoncelli},
  journal={Nature Neuroscience},
  year={2001},
  volume={4},
  pages={819-825}
}
We describe a form of nonlinear decomposition that is well-suited for efficient encoding of natural signals. Signals are initially decomposed using a bank of linear filters. Each filter response is then rectified and divided by a weighted sum of rectified responses of neighboring filters. We show that this decomposition, with parameters optimized for the statistics of a generic ensemble of natural images or sounds, provides a good characterization of the nonlinear response properties of typical… CONTINUE READING
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