• COMPREHENSIVE SURVEY ON DIGITAL WATERMARKING TECHNIQUES

Abstract

Due to high speed computer networks, the use of digitally formatted data has increased the need for the protection of digital media. Digital media includes text, digital audio, images, video and software. Many approaches are available for protecting digital data; these include encryption, authentication and time stamping. This creates a high demand for content protection technique like watermarking, which is one of the most efficient ways to protect the digital properties in recent years. "Watermarking" is the process of hiding digital information in a carrier signal. Embedding a digital signal (audio, video or image) with information which cannot be removed easily is called digital watermarking. Digital watermarks may be used to verify the authenticity or integrity of the carrier signal or to show the identity of its owners. In this paper, we present a comprehensive survey on various digital watermarking techniques. A number of watermarking techniques have been discussed. This paper is a complete survey on general watermarking principles and focuses on describing various watermarking techniques and applications.