此代码可以实现对图片的灰度值转换、直方图统计、直方图均衡化；可以主动加入椒盐、高斯噪声；噪声处理支持中值、线性、自适应滤波等操作。代码可以直接运行。-This code can be implemented to the image grey value transformation and histogram statistics and histogram equalization Can actively engage with salt and pepper, gaussian nois

对图像进行灰度变化，高频低频图像通过，椒盐和高斯噪声加噪的变换(The gray level of the image is changed, and the high frequency and low frequency images are transformed by adding salt, pepper and Gauss noise)