Digital Video Watermarking Using Diverse Watermarking Schemes

Digital Video Watermarking Using Diverse Watermarking Schemes

Yash Gupta (Maulana Abul Kalam Azad University of Technology, India), Shaila Agrawal (Maulana Abul Kalam Azad University of Technology, India), Susmit Sengupta (Maulana Abul Kalam Azad University of Technology, India) and Aruna Chakraborty (Maulana Abul Kalam Azad University of Technology, India)
Copyright: © 2018 |Pages: 12
DOI: 10.4018/978-1-5225-2255-3.ch422
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Abstract

As the significance of the internet is increasing day by day so is the need of protecting the media over the internet. So in order to protect the copyright information of the media over the internet we use the technique of Watermarking. Watermarking is the process of embedding a watermark in the media and then extracting it for ownership verification. Different types of watermarking schemes exist in the world but we always look for techniques which are highly imperceptible and does not lead to loss of fidelity. Here the researchers have put forward a technique which instills different watermarking schemes to different set of frames.
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Background

What Is Digital Watermarking?

Copyright Protection incorporates a logo or some ownership information into the digital media without affecting its perceptibility (Agrawal, Gupta, & Chakraborty, 2015; Yeo, & Yeung, 1997). Hence, in case of a conflict, the logo can effectively be extracted from the digital media in order to claim the ownership rights. Watermarking is a process of embedding some data called the watermark or the digital signature into the digital media (Sinha, Bardhan, Pramanick, Jagatramka, Kole, & Chakraborty, 2011). Here the researchers will primarily focus on Digital Video Watermarking.

What Is Digital Video Watermarking?

Digital Video Watermarking is a method of copyright protection of videos in which a watermark is added to the original video without affecting its perceivable quality (Yeo, & Yeung, 1997; Doerr, & Dugelay, 2003). For a watermarking scheme to be used for copyright protection, it should fulfill two criterions i.e. it must be robust against attacks like signal processing and lossy compression and it should not lead to loss of fidelity (Al-Khatib, Al-Haj & Lama-Rajab, 2008). Some watermarking techniques require the original video for the detection of the watermark. This is called a non-blind watermark detection method while there are some watermarking techniques which do not require the original video for watermark detection (Maity & Kundu, 2002). This is called blind watermark detection method and is usually preferred.

Types of Watermarks

As per human perception the watermark can be of three types, visible, invisible and dual. (Potkar, & Ansari, 2014).As the name suggests, a visible watermark is perceivable but an invisible watermark is not. For e.g. a watermark is to be added to an image or a video then in case of a visible watermark, the watermark can be seen on the image or on the video frames but in case of invisible watermarks, a layman would not be able to differentiate whether a watermark has been added to the digital media or not. A Dual watermark incorporates both visible and invisible watermarks to the video. Here the invisible watermark is kept as a backup for the visible watermark. The researchers’ can choose anyone of them as per our requirements and necessities.

Key Terms in this Chapter

Verification: The watermark can be extracted from the media and compared with the original watermark to prove ownership.

Fidelity: The quality of the media (image, video and other) should not degrade on addition of the watermark to it.

Robustness: The watermark should be robust against a wide range of attacks, so that the attacker cannot extract or manipulate the watermark.

Watermarking: It is the process of embedding a logo or digital signature in a media (image, video and other) for Copyright protection.

Security: It should be impossible to create a duplicate watermark as this will lead to ambiguity during ownership verification.

Imperceptibility: The watermark should not be visible in the copyrighted video.

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