cdma_recover.rar - Watermarking, as an important embranchment of information hiding, is the effective means for protect copyrights piracy. It can identify the signal’s integrity or property through embedding of additional information into multimedia signal.,2008-05-30 22:45:43,下载4次
dwt_recover.rar - we embed watermarks in the original circles. In this way, the synchronization issue for watermark embedding and detecting can be best solved. Simulation results show that this method can resist variety of Geometry Attack, such as rotation, scaling, shearing and other common signal attacks. ,2008-05-30 22:44:23,下载17次
dct1_embed.rar - research on against geometry attacks watermarking technology. A digital Watermarking scheme, which is based on combination of simple and reliable harries detector and image normalization, is proposed. The feather points remain holding after geometry attack. Applying image normalization to these non-overlapped circles which centered at the feature points, after that, we can determine area for watermark embedding. ,2008-05-30 22:43:07,下载23次
cor_embed_mod.rar - research on authentication watermarking technology. Here a watermarking scheme for color image authentication is proposed, which operates in the wavelet domain. ,2008-05-30 22:42:13,下载14次
dct1_watermarked.rar - Firstly, research on robust image watermarking. A digital watermarking scheme based on wavelet transform was proposed. It realizes the watermarking extract without the original image using 64×64×8 bit gray image as the watermark signal. In order to enhancing the security of the watermark, we employ an encryption technology based on chaos and bit plan. Simulation results show that our scheme have good invisibility and can survive low-quality JPEG compression, median filtering and so on. In addition, the analysis of the extracted watermark can help us to detect and localize tampers.,2008-05-30 22:39:12,下载160次