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Emergence of complex cell properties by decomposition of natural images into independent feature subspaces

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2 Author(s)
A. Hyvarinen ; Lab. of Comput. & Inf. Sci., Helsinki Univ. of Technol., Finland ; P. Hoyer

Olshausen and Field (1996) applied the principle of independence maximization by sparse coding to extract features from natural images. This leads to the emergence of oriented linear filters that have simultaneous localization in space and in frequency, thus resembling Gabor functions and simple cell receptive fields. In this paper, we show that the same principle of independence maximization can explain the emergence of phase and shift invariant features, similar to those found in complex cells. This new kind of emergence is obtained by maximizing the independence between norms of projections on linear subspaces (instead of the independence of simple linear filter outputs). The norms of the projections on such “independent feature subspaces” then indicate the values of invariant features

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Artificial Neural Networks, 1999. ICANN 99. Ninth International Conference on (Conf. Publ. No. 470)  (Volume:1 )

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