请高手帮忙翻译一段话，翻译成英语，谢谢

The image smoothing the goal is the noise elimination influence, improves the image the quality. The image smoothing in fact is the low-pass filtering, lets the signal the low frequency part pass, obstruction high-frequency unit noise signal. The good smooth method should be both can eliminate the noise which in the image exists, and does not cause the image the edge contour and the line changes fuzzy, this is the image smoothing processing pursue main purpose. The image smoothing filter's method mainly has the air zone law and the frequency range law two broad headings.

Purpose of image level and smooth is the effect removing noise, to improve the image mass. In effect of image level and smooth is low wave filtering, let the signal low frequency part pass , block and intercept high frequency part noise signal. Good method level and smooth ought to be the noise there existing in middle now that the energy removes an image , the border outline and line unexpected turn of ev