图像噪声会使原图像形成虚假的边缘或轮廓。减弱、抑制这类噪声改善图像质量的方法称为图像平滑。采用邻域平均法对含有随机噪声的图像进行平滑处理，在CCS中观察结果并进行分析。(Image noise causes false edges or contours of the original image. Image smoothing is a way to reduce and suppress such noise and improve image quality. Neighborhood averaging method is used to smooth the image with random noise, and the results are analyzed in CCS.)