基于FFT的数字图像水印技术，数字图像水印的嵌入-FFT-based digital image watermarking techniques, digital image watermark embedding

这是一个图像水印的程序，可以把水印内容嵌入到图像中，也可以从图像中提取出加密之后的水印。-This is an image watermarking program, you can embed a watermark into the image can also be extracted from the image watermark after encryption.