2D - Spread spectrum watermark framework for multimedia copyright protection

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.