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 charact