高斯滤波是一种线性平滑滤波，适用于消除高斯噪声，广泛应用于图像处理的减噪过程。通俗的讲，高斯滤波就是对整幅图像进行加权平均的过程，每一个像素点的值，都由其本身和邻域内的其他像素值经过加权平均后得到。高斯滤波的具体操作是：用一个模板（或称卷积、掩模）扫描图像中的每一个像素，用模板确定的邻域内像素的加权平均灰度值去替代模板中心像素点的值。-Gaussian filter is a linear smoothing filtering, applicable to eliminate the gaussian noise, widely used in image processing of the noise reduction process.Popular speaking, gaussian filtering is a process to the weighted average of the whole image, each pixel values, all by itself and other neighborhood pixels after the weighted average.Gaussian filtering concrete operation is: use a template (or convolution mask), the each pixel in image scanning and templates are used to determine the weighted average grey value of pixels in neighborhood to replace template center pixel value.