图像锐化：梯度算子、Roberts算子、Sobel算子边缘检测处理和Laplace算子边缘增强处理，使图像的某些特征(如边缘、轮廓等)得以进一步的增强及突出。

图像平滑主要目的是减少噪声对图像的影响。平滑线性滤波和中值滤波两种。-Image Sharpening: gradient operator, Roberts operator, Sobel operator edge detection processing, and the Laplace operator edge enhancement processing, some of the characteristics of the image (such as edge, contour, etc.) can be further enhanced and prominent.

The main purpose of image smoothing is to reduce the impact of noise on the image. Two kinds of smooth linear filtering and median filtering.