Biological processes human vision

Methods based in traditional competitive learning are focused on data density representation to be optimal from the point of view of reducing the Shannon s information entropy for the use of codewords in a transmission task. However it is not always desirable a codebook representation with direct proportion between its codeword density and the data density. For example, in the human vision system, the attention is attracted to visually salient stimuli, and therefore only scene locations sufficiently different from their surroundings are processed in detail. A simple framework to think about how Saliency may be computed in biological brains has been developed over the past three decades [10,19]. 

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