Progressive Performance of Watermarking Using Spread Spectrum Modulation
Arunothpol Debnath, Anirban Saha, Tirtha Sankar Das, Abhishek Basu, Avik Chattopadhyay · 2021
This chapter discusses digital watermarking methods, providing a detailed discussion of how and why various digital watermarking techniques came into practice and what hurdles we still face while implementing a digital watermarking system. It provides an outline of cryptography that is intended to highlight how important cryptography is for securing information against outside intrusion. The chapter aims to develop a secure digital watermarking scheme that is sufficiently robust against most common signal processing operations and intentional or unintentional distortions and can provide a good level of imperceptibility. It describes different classifications of existing watermarking methods. The chapter discusses different aspects of a watermarking algorithm that can be used to evaluate its performance. It explains the comprehensive approach used to develop the algorithm proposed in this work. The chapter also describes a general model of spread spectrum watermarking along with the proposed watermarking algorithm. It documents all the results and relevant discussions.