Recurrent sequences in median filters (II) |
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Institution: | ZHOU Xingwei and YAN Ning
(Department of Mathematics, Nankai University, Tianjin 300071, China) |
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Abstract: | 1 Introduction Throughout this note k denotes a fixed integer and k>1. Let x={x(n)}_n=0, ±, ±2,… be a real sequence. For each integer n, we denote by x(n) the median value of the following 2k+1 numbers: x(n-k), x(n-k+1), …, x(n),…, x(n+k-1), x(n+k). By this permuting operation, the sequence x={x(n)} is transformed in |
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Keywords: | median filters recurrent sequences |
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