scholarly journals Audio Watermarking Schemes: A Comparative Analysis

2020 ◽  
Vol 4 (4) ◽  
pp. 57-61
Author(s):  
Jasmine Jolly ◽  
Mehbooba P Shareef
Keyword(s):  
Comparative Analysis ◽  
Auditory System ◽  
Copyright Protection ◽  
Digital Images ◽  
Video Watermarking ◽  
Audio Watermarking ◽  
Digital Data ◽  
Secret Key ◽  
Human Auditory System ◽  
Copyright Violation

The growth of internet and its reachability to all sectors of people have never been greater. Internet has become the best marketplace, the best library and may be the best guide for everything. But this revolution comes with some bigger problems. One of the most challenging problems among them would be copyright protection of digital data being transferred over internet. Digital images, videos and audios undergo illegal re-production and re-distributions, tampering and other acts of copyright violation. This is proved to have leading the film and other prominent industries to loss of millions of dollars per year. Encrypting the data provides security to it. In this case only people who pay to buy the secret key that should be used for decryption can use the data. But the problem is that once decrypted, the data can be re-produced into any number of copies and can be re-distributed without any permission from the author. Watermarking is an intelligent solution for this problem where the presence of watermark can be checked to distinguish pirated copies from the actual ones. A lot of methods have been developed for image and video watermarking, but the research on audio watermarking started a little bit later. The reason might be the fact that audio watermarking is tedious compared to image and video as Human Auditory System (HAS) is more sensitive compared to Human Visionary System. So ensuring the imperceptibility of audio watermarks is a tougher task. In this thesis various audio watermarking schemes introduced so far in the literature and their merits and demerits are studied.

Robust and Secured Digital Audio Watermarking using Improved DWT-SVD-DFT Approach

2018 ◽  
Vol 7 (3.12) ◽  
pp. 1112
Author(s):  
Krunalkumar N. Patel ◽  
Saurabh A. Shah ◽  
Dipti B. Shah
Keyword(s):  
Wavelet Transformation ◽  
Audio Watermarking ◽  
Digital Data ◽  
Digital Audio ◽  
Secret Key ◽  
Digital Audio Watermarking ◽  
Copyright Information ◽  
Transformation Methods ◽  
Value Decomposition ◽  
Internet Revolution

Today, the use of digital data like image, audio and video is tremendously increasing due to the advancement in technology and internet revolution. With this advancement to attain the one’s ownership and copyrights for this digital data is the biggest challenge. Digital watermarking is one of the technique to attain one’s ownership and copyrights with securely. It is the technique in which the owner’s copyright information can be embedded into the original media either in the form of an image, audio, text or video. There are two main factors we need to observe for this digital audio watermarking to maintain the robustness as well as imperceptibility against the piracy, malicious attacks, and various transformation operations. Though there are many challenges to achieve this results, in this paper, our proposed audio watermarking technique is used to improve the robustness, imperceptibility of the embedded information with security. For Security, in our proposed work we are using synchronized secret key concept with DSSS encryption algorithm and two important powerful transformation methods used that are DWT (Discreet Wavelet Transformation) up to 4-level to get lowest frequency sub-band and after that DFT is applied to get lowest frequency from sub-band found by DWT in which the modifications are done and then SVD (Singular value Decomposition)is applied to it, so that original audio file does not have any impact of watermark bits to get the better robustness and imperceptibility.  

Watermarking on Compressed/Uncompressed Video Using Communications with Side Information Mechanism

2002 ◽  
pp. 173-189 ◽  
Author(s):  
Chun-Shien Lu ◽  
Hong-Yuan Mark Liao ◽  
Jan-Ru Chen ◽  
Kuo-Chin Fan
Keyword(s):  
Copyright Protection ◽  
Side Information ◽  
Video Watermarking ◽  
Digital Data ◽  
3D Objects ◽  
Advantages And Disadvantages ◽  
Video Watermark ◽  
Audio Video ◽  
Future Work ◽  
Watermarking Scheme

Digital watermarking has been proposed as very useful technology in the protection of digital data such as image, audio, video, formatted documents (PDF or PS), and 3D objects. In the literature, most of the existing watermarking approaches are conducted on images. However, video is even more useful and should be protected with higher priority. In particular, video sequences usually contain rich properties that images do not have. On the other hand, the types of attacks applied on a video are much different from those applied on an image. In this chapter, we will focus ourselves specifically on video watermarking. The content of this chapter is divided into two parts. In the first part, the existing video watermarking techniques are briefly reviewed. We have pointed out their advantages and disadvantages to realize what can be done about video watermarking. In the second part, we propose a compressed domain video watermarking scheme for copyright protection. For the sake of real-time video watermark detection, our method is directly conducted in the MPEG-2 bitstream. More specifically, watermarks are inserted into the VLC domain. We shall discuss how to select proper data in a video bitstream to embed watermarks while preserving perceptual fidelity. In addition, video watermarks are embedded by a new proposed watermarking technique, which is based on the concept of communications with side information. The power of our method is reflected by its robust capability against attacks. Future work will also be pointed out to further improve the current scheme

Video Watermarking Scheme Based on Candidates I-frames for Copyright Protection

2017 ◽  
Vol 5 (2) ◽  
pp. 391 ◽  
Author(s):  
Rakesh Ahuja ◽  
Dr. Sarabjeet Singh Bedi
Keyword(s):  
Video Processing ◽  
Copyright Protection ◽  
Intermediate Frequency ◽  
Video Watermarking ◽  
Perceptual Quality ◽  
Secret Key ◽  
Pulse Code Modulation ◽  
Temporal Synchronization ◽  
Differential Pulse Code Modulation ◽  
Watermarking Scheme

<p>This paper focuses on moving picture expert group ( MPEG) based digital video watermarking scheme for copyright protection services. The present work implemented the video watermarking technique in which discrete cosine transform (DCT) intermediate frequency coefficients from instantaneous decoder refresh (IDR) frames are utilized. The subset of IDR frames as candidate frames are chosen to reduces the probability of temporal synchronization attacks to achieve better robustness and high visual perceptual quality.  A secret key based cryptographic technique is used to enhance the security of embedded watermark. The proposed scheme embedded the watermark directly during the differential pulse code modulation (DPCM) process and extracting through decoding the entropy details. Three keys are required to extract the watermark whereas one of the key is used to stop the extraction process and the remaining two are used to display the watermark. The robustness is evaluated by testing spatial synchronization attacks, temporal synchronization attacks and re-encoding attacks. The present work calculates the simulation results that shows the watermarking scheme achieved high robustness against video processing attacks frequently occur in the real world and perceptibility also obtained without changing the motion vectors during the DPCM process of MPEG-2 encoding scheme.</p>

scholarly journals Design and Implementation of Robust Digital Watermarking using Hybrid technique for Copyright Protection Digital data

2021 ◽  
Vol 12 (3) ◽  
pp. 4839-4845
Author(s):  
Lakshman Ji Et. al.
Keyword(s):  
Image Processing ◽  
Comparative Analysis ◽  
Digital Watermarking ◽  
Copyright Protection ◽  
High Frequency ◽  
Error Rates ◽  
Digital Data ◽  
Hybrid Technique ◽  
Scene Detection ◽  
Design And Implementation

In this research paper, we concerned with the creation of a comprehensive digital watermarking framework based on DWT. In order to improve imperceptibility and robustness, the watermark is inserted only in chosen frames. The picked frames are the frames in which a change of scene happens. The key objective, therefore, is to detect the correct transformation of the scene. The Scene Shift Detector identifies correct frames that have been modified using the successive histogram discrepancy process. Two schemes proposed using the same method of scene detection. Both suggested schemes achieve a good watermark rating with good (PSNR) valuesThere, Because the watermark integration is done exclusively on the scene with low and high frequency DWT subbands, the image processing assaults, geometric aggressions, JPEG compression, high normalised image attacks are immune,and low-bit error rates (BER). Comparative analysis of two algorithms is also carried out.

scholarly journals A Novel Video Watermarking Algorithm using DTCWT

2021 ◽  
Vol 9 (VI) ◽  
pp. 1629-1634
Author(s):  
Sridevi Tumula
Keyword(s):  
Digital Watermarking ◽  
Copyright Protection ◽  
Video Watermarking ◽  
Multimedia Data ◽  
Digital Data ◽  
Robust Watermarking ◽  
Complex Wavelet Transform ◽  
Digital Multimedia ◽  
New Novel ◽  
Audio Data

In this paper a new novel color video watermarking algorithm has been proposed using Dual Tree Complex Wavelet Transform (DTCWT). Digital watermarking is an emerging technology for copyright protection for digital multimedia data. Now-a-days a lot of digital data are exchanged in the internet, so to protect the digital multimedia data, digital watermarking is used, the data may be an image or video or an audio data. The main objective of this paper is to maintain perceptivity of digital video and design a robust watermarking algorithm and maintaining the tradeoff between robustness and perceptivity.

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