The “independent components” of natural scenes are edge filters

@article{Bell1997TheC,
  title={The “independent components” of natural scenes are edge filters},
  author={Anthony J. Bell and Terrence J. Sejnowski},
  journal={Vision Research},
  year={1997},
  volume={37},
  pages={3327-3338}
}

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References

SHOWING 1-10 OF 56 REFERENCES

Natural image statistics and efficient coding.

It is suggested that a good objective for an efficient coding of natural Scenes is to maximize the sparseness of the representation, and it is shown that a network that learns sparse codes of natural scenes succeeds in developing localized, oriented, bandpass receptive fields similar to those in the mammalian striate cortex.

Natural Image Statistics and Eecient Coding

It is suggested that a good objective for an eecient coding of natural Scenes is to maximize the sparseness of the representation, and it is shown that a network that learns sparse codes of natural scenes succeeds in developing localized, oriented, bandpass receptive elds similar to those in the primate striate cortex.

Relations between the statistics of natural images and the response properties of cortical cells.

  • D. Field
  • Computer Science
    Journal of the Optical Society of America. A, Optics and image science
  • 1987
The results obtained with six natural images suggest that the orientation and the spatial-frequency tuning of mammalian simple cells are well suited for coding the information in such images if the goal of the code is to convert higher-order redundancy into first- order redundancy.

Convergent Algorithm for Sensory Receptive Field Development

An unsupervised developmental algorithm for linear maps is derived which reduces the pixel-entropy at every update and thus removes pairwise correlations between pixels, and is biologically plausible since in a neural network implementation it requires only data available locally to a neuron.

Self-organization in a perceptual network

It is shown that even a single developing cell of a layered network exhibits a remarkable set of optimization properties that are closely related to issues in statistics, theoretical physics, adaptive signal processing, the formation of knowledge representation in artificial intelligence, and information theory.

Optimal Sampling of Natural Images: A Design Principle for the Visual System

The resulting optimal filters are remarkably similar to those observed in the mammalian visual cortex and the retinal ganglion cells of lower vertebrates.

Finding compact and sparse-distributed representations of visual images

An artificial neural network which self-organizes on the basis of simple Hebbian learning and negative feedback of activation is introduced and it is shown that it is capable both of forming compact codings of data distributions and of identifying filters most sensitive to sparse-distributed codes.

Searching for filters with 'interesting' output distributions: an uninteresting direction to explore?

It is argued that other constraints are required in order to understand the development of visual receptive fields and that filters can produce 'interesting' output distributions simply because natural images have variable local intensity variance.

Orientation selectivity of thalamic input to simple cells of cat visual cortex

It is reported that the orientation tuning of these potentials is almost unaffected by cooling the cortex, in agreement with Hubel and Wiesel's original proposal.

Optimal unsupervised learning in a single-layer linear feedforward neural network

...