2007 | OriginalPaper | Buchkapitel
Noise Masking for Pattern Recall Using a Single Lattice Matrix Associative Memory
verfasst von : Gonzalo Urcid, Professor Dr. Gerhard X. Ritter
Erschienen in: Computational Intelligence Based on Lattice Theory
Verlag: Springer Berlin Heidelberg
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Summary. Lattice matrix associative memories have been developed as an alternative way to work with a set of associated pattern pairs for which the storage and retrieval stages are based in the theory of minimax algebra. Several methods have been proposed to cope with the problem of binary or real valued pattern recall from corrupted inputs and recent results on fixed point sets of matrix lattice transforms have provided for an algebraic characterization as well as a geometrical description of the canonical lattice min and max auto-associative memories. Compared to other correlation type associative memory models, the lattice associative memory schemes have shown better performance for both storage and recall capability; however, the computational techniques devised to achieve that purpose are still cumbersome when inputs have undetermined noise bounds. The procedures explained in this chapter makes use of noise masking to boost the recall performance of either the min or max morphological auto-associative memories. Examples using image patterns show the enhanced recovery of almost correct associations from noisy inputs by a single lattice matrix associative memory.