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用matlab实现的DCT水印处理，并附有图像显示。-Matlab implementation of the DCT with watermark treatment, together with image display.
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Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection an
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DCT给灰度图像加二值的水印信息，运行显示四幅图，分别是原图像，水印图像，加水印的图像和提取的水印图像-DCT to gray image plus two watermark values, run the show four maps are the original image, watermark image, add watermark image and extracted watermark image
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本文算法是将24 位真彩图的亮度分量分块
DCT ,然后利用DCT 量化系数的奇偶特性嵌入8
位灰度水印图,并通过PN 序列加密来保证水印的
安全性。算法中,将灰度图像转换为二进制数据
流,置乱后扩频调制,隐藏在宿主DCT 系数量化值
中,提取时不需要宿主信号,实现水印信号的盲提
取。-This algorithm is 24-bit true color pictures of the luminance component of block DCT, quantiza
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it is a file to watermark the image file in matlab
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基于DCT数字水印算法的Matlab实现源代码,1. 将文字水印和图像水印转换为二值序列水印；
2. 对水印进行置乱，提高其安全性；
3. 选择合适大小的块，给出DCT域中频分块编码方案；-DCT-based digital watermarking algorithm Matlab source code, a text watermark and image watermark converted into a binary sequence watermark .. 2 wa
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一种采用dct离散余弦变换的图像水印算法的MATLAB实现。-MATLAB implementation of image watermarking algorithm based on DCT discrete cosine transform.
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perform dct on image
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