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本文提出了一种设计任意幅度频响的二维线性相位ＦＩＲ数字滤波器的新方法。通过最小化频域平方误差函数可得到滤波器系数的简单公式，从而根据给定的任意幅度频响直接计算滤波器的系数，大大降低了运算量。文中还给出了滤波器设计实例，其结果证实了该设计方法的简便性与有效性
In this paper, a new method of designing a two-dimensional linear phase FIR digital filter with arbitrary amplitude and frequency response is proposed. By minimizing the square error function in the frequency domain, a simple formula for the filter coefficient can be obtained, so that the filter coefficient can be directly calculated according to a given arbitrary frequency response, which greatly reduces the computational complexity. The article also gives examples of filter design, the results confirm the simplicity and effectiveness of the design method