Benchmarking digital watermarking algorithms is not an easy task because different applications of digital watermarking often have very different sets of requirements and trade-offs between conflicting requirements. While there have been some general-purpose digital watermarking benchmarking systems available, they normally do not support complicated benchmarking tasks and cannot be easily reco...

Watermarking is the process of hiding digital information in a carrier signal. Embedding a digital signal with information which cannot be removed easily is called digital watermarking. This work presents an adaptive watermarking method based on Arnold Transforms, which can improve the security of data during transmission more effectively. In this method a logo message is embedded into a cover ...

Digital data can be easily copied and modified to create duplicate copies. These modified images are then redistributed through the Internet. As these illegal activities are becoming more and more common, mechanisms to protect digital resources are in high demand. Watermarking is an effective method for restricting abuses of published digital contents and to protect ownership rights of the owne...

Digital watermarking has been widely used in copyright protection for digital images, but most of the watermarking algorithm can't resist print-and-scan process. Print-and-scan attack is a challenging problem for most of digital watermarks. A watermarking algorithm against print-and-scan attack based on PSO (Particle Swarm Optimization) is proposed in this paper. The watermark information is em...