通过理想高通滤波器实现对图像的锐化，图像锐化的目的是突出图像的边缘信息，加强其图像的轮廓特征，以便于人眼和机器的识别。-Through the realization of the ideal high-pass filter for image sharpening, image sharpening is designed to highlight the edge of the image information, to enhance the outline of the characteristics of their images in order to facilitate the human eye and machine identification.