图像在采集的过程中，或者进行数字量化的过程中，都有可能引入噪声，所以对

图像在采集的过程中，或者进行数字量化的过程中，都有可能引入噪声，所以对图像进行平滑处理是有必要的。但是要减少图像中的噪声，必须具体境况具体分析即不同噪声要采用不同的方法，否则很难获得精确的图像信息。去噪方法有很多如邻域平均法、中值滤波法、低通滤波法等等。
对目标本文中采用的是中值滤波，基本原理是把数字图像或数字序列中一点的值用该点的一个邻域中各点值的中值代替，让周围的像素值接近的真实值，从而消除孤立的噪声点。方法是用某种结构的二维滑动模板，将板内像素按照像素值的大小进行排序，生成单调上升或单调下降的为二维数据序列。二维中值滤波输出为

結果 (英文) 1:

Images in the collection process, or numbers in the process are likely to introduce noise, so the image smoothing is necessary. To reduce noise in an image must be specific situations: different noise will use a different method, otherwise the image is difficult to obtain accurate information. Denoising method there are many neighborhood average, median filter, low pass filter, and so on.Filtering in the target is used in this article, the basic principle is the digital image or point value in a sequence of numbers used in a neighborhood of the point value of each point value, close to the true value of surrounding pixels values, eliminating the noise isolation. Method is to use a certain structure of two-dimensional slide templates, sort the pixels in the pixel size, monotonic increase or decrease of two-dimensional data sequence. Two-dimensional median filtering output

結果 (英文) 3:

In the process of image acquisition, or the process of digital quantization, it is possible to introduce noise, so the image smoothing is necessary. But in order to reduce the noise in the image, it is necessary to analyze the specific circumstances of the specific situation that different noise to use different methods, otherwise it is difficult to obtain accurate image information. There are many ways to noise, such as neighborhood average, median filter, low pass filter and so on.To this goal by the median filtering, the basic principle is the digital image or sequence in a value with median values in a neighborhood of the point instead, surrounding the pixel values close to the true value, so as to eliminate the isolated noise points. The method is to use a kind of structure of the two-dimensional sliding template, the pixel value of the pixel in accordance with the size of the order to generate a monotonous rise or decline of the two-dimensional data sequence. Two dimensional median filter output is