在最优滤波器理论基础上，推导出离散域的最优平滑算子，抑制了图像的分割错误、噪声和伪边缘的影响。

The smooth operator is inferred based on the Optimal Discrete Filter's theory, which can reduce the influence of noise, false edges and image error.

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给出了一种离散系统最优滤波器的线性矩阵不等式（LMI） 设计方法。

This paper studies the problem of getting the optimal unbiased filter for discrete system using the method of linear matrix inequality(LMI).

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