Robust Wavelet based Watermarking Using Particle Swarm Optimization

Abstract

Abstract: From the 13th century we are using watermarking techniques and first time watermarking used by paper industry because the benefit of watermarking in this industry to unique identify of papers. Thus we can use this technique for authentication and copyright purpose. Watermarking is a pattern which is used to insert in a entity. When we insert any watermark then it will not change any functionality or structure of an entity. We can say digital entities like audio, video, computer programs, software, hardware like chips. Main purpose of watermark is to provide authenticity and illegal distribution of work attacks.