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LSB.rar
- 利用LSB算法去实现了电子水印技术。代码完全实现了嵌入以及提取， 算法同时包含了4种攻击算法以及利用psnr测量提取的水印和攻击后提取的水印,This algorithm describes digital watermark technique by using LSB. This code implement embedding and extraction. At the meanwhile, this algorithm includes 4 different kinds of att
dwtwm
- This program embed watermark in the wavelet coefficients.Recovery of watermark possible even in presence of noise.Evaluated with psnr
watermark
- 文件夹LSB中是空域LSB算法程序，文件夹COX中是Cox算法主要程序，文件夹DCT中是频域加在中频的算法的程序。 步骤：把LSB，COX，DCT三个文件夹考在MATLAB目录下； 运行lsb_embed,programme,dct2_embed_mod即可。其中PSNR.m是计算峰值信噪比程序；attact.m & robust.m是攻击程序。-Content: folder LSB of spatial LSB algorithm program, folder COX Cox a
psnr
- 峰值信噪比（PSNR），一种评价图像的客观标准。水印提取判断效果。-Peak Signal to Noise Ratio (PSNR), objective criteria for evaluating image. Determine the effect of watermark extraction.
watermark-and-psnr
- DIGITAL WATERMARKING USING LSB
Image-Watermarking-using-Tetrolet-Transform
- This paper proposes new watermarking technique based on Tetrolet domain. The Tetrolet transform is a new adaptive Haar-type wavelet transform based on tetrominoes. It avoids Gibbs oscillation because it applies the Haar function at the edge of the im
DWT水印1
- 实现水印的嵌入与提取，计算PSNR值 同时对水印进行攻击(Embedding and extracting the watermark and calculating the PSNR value Attack the watermark at the same time)