中文说明：这个程序能清楚显示灰度图形的灰度直方图，并能进行平滑与滤波处理，方便程序员观察了解图像。
English Description：
This program can clearly display the gray histogram of gray graphics, and can smooth and filter processing, convenient for programmers to observe and understand the image.
This program can clearly display the gray histogram of gray graphics
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中文说明：这个程序能清楚显示灰度图形的灰度直方图，并能进行平滑与滤波处理，方便程序员观察了解图像。
English Description：
This program can clearly display the gray histogram of gray graphics, and can smooth and filter processing, convenient for programmers to observe and understand the image.