2D - Spread spectrum watermark framework for multimedia copyright protection

In this paper we propose two dimensional spread spectrum watermarking framework based on Direct Spread Spectrum theory using PN sequences. The presenting schema allows acquiring a high level of robustness with desired imperceptibility. The aim of this paper was to present robust and adaptive watermarking system for multimedia protection, where hidden watermark provides a desired requisition against copyright infringement. Media content delivery system incorporated by cryptographic public-key was proposed in the paper as part of. The framework concept was applied to digital video content to simulate 2D-level spreading technique of hidden watermark data.