编制程序，实现图像文件（如bmp等）的读取、显示、图像平滑（高斯滤波、中值滤波）及图像锐化（分别用Roberts算子、Prewitt算子及Sobel算子）。-Programming, image files (such as bmp, etc.) to read, display, image smoothing (Gaussian filtering, median filtering) and image sharpening (respectively Roberts operator,