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MOS circuits for median filtering applications

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3 Author(s)
Lau, K.T. ; Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore ; Ng, E.S. ; Ng, K.M.

Several circuit configurations to sort or detect the highest voltage in a range of input signals are presented. These MOS-based circuits can generally be used as median filters in image processing to sort out the median pixel in a neighborhood of pixels. They can be generalized to n-input sorter circuits for generating the median at the output. They can also be used in maximum-voltage detection applications and in neural network systems where the winner-take-all subcircuit is required

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Consumer Electronics, IEEE Transactions on  (Volume:39 ,  Issue: 1 )