数字图像平滑处理可以在空间域或频率域中进行。
It can be accomplished in spatial domain and frequency domain. This chapter presents the ways of the smoothing of digital image.
其次采用合适空间尺寸的空间域非线性平滑滤波器进行滤波处理，对噪声干扰的抑制能力较强，能起到较好作用；
Firstly, picking up of the foreground is based on the method of background difference. Secondly, choosing a proper median filter is significant to suppress the noise interference.
其次采用合适空间尺寸的空间域非线性平滑滤波器进行滤波处理，对噪声干扰的抑制能力较强，能起到较好作用；
Firstly, picking up of the foreground is based on the method of background difference. Secondly, choosing a proper median filter is significant to suppress the noise interference.
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