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A simple formula for the variance of the median filter output with Laplacian input

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2 Author(s)
Lee Yong-Hwan ; Codex Corp., Mansfield, MA, USA ; Tantaratana, Sawasd

An approximation formula for the variance of the output of the median filter when the input is a sequence of independent and identically distributed random variables with Laplacian probability density function is proposed. Numerical results show that the proposed formula agrees very well with the exact results for a wide range of N

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Signal Processing, IEEE Transactions on  (Volume:39 ,  Issue: 4 )