We present a smoothing algorithm based on the main direction combined with mean curvature flow and normal filter method.
本文主要提出了基于主方向的平滑算法，并结合平均曲率流算法和法向滤波算法进行了改进。
The paper presents a smoothing algorithm based on the main direction combined with the mean curvature flow and the normal filter method.
该文给出了基于主方向的平滑算法，并结合平均曲率流算法和法向滤波算法进行了改进。
It is difficult to reduce the noise signal in the cab signal by normal filter because the frequency of it is similar to themodulate signal.
由于铁道机车信号中噪音信号频率与调频信号频率较为接近，使用普通滤波器很难在滤除噪音时尽可能少地影响有用信号。
It is difficult to reduce the noise signal in the cab signal by normal filter because the frequency of it is similar to themodulate signal.
由于铁道机车信号中噪音信号频率与调频信号频率较为接近，使用普通滤波器很难在滤除噪音时尽可能少地影响有用信号。
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