中文说明：
图像压缩去噪增强锐化程序，供大家参考。 包括：数字图像矩阵数据的显示及其傅立叶变换 二维离散余弦变换的图像压缩 采用灰度变换的方法增强图像的对比度 采用二维中值滤波函数medfilt2对受椒盐噪声干扰的图像滤波 采用MATLAB中的函数filter2对受噪声干扰的图像进行均值滤波 图像的自适应魏纳滤波 运用5种不同的梯度增强法进行图像锐化 图像的高通滤波和掩模处理 利用巴特沃斯（Butterworth）低通滤波器对受噪声干扰的图像进行平滑处理 利用巴特沃斯（Butterworth）高通滤波器对图像进行锐化处理-
English Description：
Image compression denoising enhancement sharpening program for your reference. Including: the display of digital image matrix data and its Fourier transform, the image compression of two-dimensional discrete cosine transform, the gray transformation method is used to enhance the contrast of the image, the two-dimensional median filter function medfilt2 is used to filter the image disturbed by salt and pepper noise, the function Filter2 in MATLAB is used to filter the image disturbed by noise, and the adaptive Wiener filter of the image is used 5 Different gradient enhancement methods are used for high pass filtering and mask processing of image sharpening. The image disturbed by noise is smoothed by Butterworth low-pass filter, and the image is sharpened by Butterworth high pass filter-