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Adaptive multistage weighted order statistic filters based on the backpropagation algorithm

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3 Author(s)
Lin Yin ; Dept. of Electr. Eng., Tampere Univ. of Technol., Finland ; Astola, J. ; Neuvo, T.

As a concise representation of stack filters, multistage weighted-order statistic (MWOS) filters are introduced, which correspond to multistage threshold logic gates or multilayer perceptrons in the binary domain. Two adaptive algorithms are derived for finding optimal MWOS filters under the mean absolute error criterion and the mean square error criterion, respectively. Experimental results from image enhancement are provided to compare the performance of adaptive MWOS filters and adaptive stack filters

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Signal Processing, IEEE Transactions on  (Volume:42 ,  Issue: 2 )