Multiple image watermarking is an advanced concept of singular watermarking techniques. The existing singular digital image watermarking techniques cannot obtain all the design goals, such as imperceptibility, robustn...
The advent of the Internet in these last years encouraged a considerable traffic of digital images. In the sanitary field, precisely in telemedicine branch, medical images play a very important role for therapeutic di...
In this paper, we evaluate the readability of optically written watermarking from an image compressed by JPEG. We previously proposed an optical watermarking technique that can protect the portrait rights of real obje...
A recent trend of the digital watermark requires not only the robustness but also speed. To achieve these requirements, we propose a watermark synchronization scheme based on two kinds of templates. The first one is t...
In mobile environment, a low-complexity is the significant feature because the mobile device has very limited resources due to power consumption. In this paper, we propose a low-complexity watermarking scheme for mobi...