scholarly journals A Hybrid Digital Watermarking Approach Using Wavelets and LSB

2017 ◽  
Vol 7 (5) ◽  
pp. 2483 ◽  
Author(s):  
V. Ashok Kumar ◽  
C. Dharmaraj ◽  
Ch. Srinivasa Rao
Keyword(s):  
Digital Watermarking ◽  
Copyright Protection ◽  
Discrete Wavelet ◽  
Watermark Image ◽  
Least Significant Bit ◽  
N Level ◽  
Novel Approach ◽  
Simulation Results ◽  
Authentication Security ◽  
Wavelet Image

The present paper proposed a novel approach called Wavelet based Least Significant Bit Watermarking (WLSBWM) for high authentication, security and copyright protection. Alphabet Pattern (AP) approach is used to generate shuffled image in the first stage and Pell’s Cat Map (PCM) is used for providing more security and strong protection from attacks. PCM applied on each 5×5 sub images. A wavelet concept is used to reduce the dimensionality of the image until it equals to the size of the watermark image. Discrete Cosign Transform is applied in the first stage; later N level Discrete Wavelet Transform (DWT) is applied for reducing up to the size of the watermark image. The water mark image is inserted in LH<sub>n</sub> Sub band of the wavelet image using LSB concept. Simulation results show that the proposed technique produces better PSNR and similarity measure. The experimental results indicate that the present approach is more reliable and secure efficient.The robustness of the proposed scheme is evaluated against various image-processing attacks.

Defending Multimedia Content Embedded in Online Social Networks (OSNs) Using Digital Watermarking

2020 ◽  
pp. 90-113
Author(s):  
Brij B. Gupta ◽  
Somya Rajan Sahoo ◽  
Prashant Chugh ◽  
Vijay Iota ◽  
Anupam Shukla
Keyword(s):  
Digital Watermarking ◽  
Copyright Protection ◽  
Online Social Networks ◽  
Internet Usage ◽  
Multimedia Content ◽  
Least Significant Bit ◽  
Text Documents ◽  
Bit Plane ◽  
Embedded Process ◽  
The Web

In global internet usage, increasing multimedia message, which includes video, audio, images, and text documents, on the web raised a lot of consequences related to copyright. For copyright protection, authentication purpose and forgery detection digital watermarking is the robust way in social network content protection. In this technique, the privacy information is embedded inside the multimedia content like image and video. The protected content embedded inside multimedia content is called watermark-enabled information. To make more effective the process of watermarking, the content encrypted before embedding to the image. Basically, the digital watermarking embedded process implemented in two different domains called spatial and frequency domain. In spatial domain digital watermarking, the watermark information is embedded in the least significant bit of the original image on the basis of bit plane selected and on the basis of the pixels of image, embedding, and detection is performed.

A New Robust Color Image Watermarking Based on DWT and DRT

2013 ◽  
Vol 278-280 ◽  
pp. 1366-1373 ◽  
Author(s):  
Zi Teng ◽  
Xiu Feng Qiu ◽  
Jian Wei Liu
Keyword(s):  
Digital Watermarking ◽  
Copyright Protection ◽  
Color Image ◽  
Image Watermarking ◽  
Discrete Wavelet ◽  
Color Image Watermarking ◽  
Ridgelet Transform ◽  
Color Image Watermark ◽  
Robust Image ◽  
Watermarking Scheme

The copyright protection of multimedia information is more and more important in the digital age, digital watermarking is a solution to address the topic. This paper proposes a new robust image watermarking scheme based on discrete ridgelet transform (DRT) and discrete wavelet transform (DWT). The scheme respectively embeds a copy of color image watermark into DWT domain and DRT domain, and uses a conception of semi-watermark. Experiment results demonstrate that the watermark can resist various attacks such as adding Gaussian or Union Distribution Noise, JPEG compression, brightness adjustment, contrast adjustment, altering color balance, lens blur, zooming in or out, cropping and some combined attacks etc.

scholarly journals Design of a Hybrid Digital Watermarking Algorithm with High Robustness

2020 ◽  
Author(s):  
Yi Xie ◽  
Yulin Wang ◽  
Maode Ma
Keyword(s):  
Digital Watermarking ◽  
Singular Value ◽  
The Internet ◽  
Discrete Wavelet ◽  
Magic Square ◽  
Digital Multimedia ◽  
Security Scheme ◽  
Simulation Based ◽  
Simulation Results ◽  
Value Decomposition

With the development of the Internet, storage and transmission technologies such as printers and scanners, digital multimedia products are rapidly transmitted through the Internet broadcasting, multimedia works becoming easy to obtain and illegally tampering and copying. The copyright of media works urgently needs to be protected. As an important information security scheme, digital watermarking technology provides a powerful solution to the protection of multimedia works. In this paper, we propose an image digital watermarking algorithm combining discrete wavelet transform, discrete cosine transform and matrix singular value decomposition and new scrambling technique. Furthermore, to improve the robustness of the algorithm, grayscale scrambling and pseudo magic square transform are used. To evaluate our proposed algorithm, we realize the simulation based on Python 3.7.  All the simulation results show that our proposed algorithm has strong imperceptibility and robustness.    

scholarly journals Blind Adaptive Watermarking Based on Wavelet Transform and HVS

2012 ◽  
pp. 280-285
Author(s):  
T Mita Kumari
Keyword(s):  
Wavelet Transform ◽  
Copyright Protection ◽  
Discrete Wavelet ◽  
Original Image ◽  
Image Simulation ◽  
Adaptive Watermarking ◽  
Blind Adaptive ◽  
Simulation Results ◽  
Watermarking Scheme ◽  
Blind Image

This paper proposes a novel blind image adaptive watermarking scheme in Discrete Wavelet Transform (DWT) domain for copyright protection or robust tagging applications. Watermarking scheme effectively utilizes the contrast sensitivity model of Human Visual System (HVS) to embed the watermark adaptively without degradation of the original image. Watermark can be extracted without referring to the original image. Simulation results show the robustness of the proposed algorithm against various attacks.

A Robust Image Watermarking Algorithm Based on PCA and NN

2013 ◽  
Vol 709 ◽  
pp. 654-657
Author(s):  
Wei Wang ◽  
Wen Hui Li ◽  
Jiang Chao Zheng
Keyword(s):  
Copyright Protection ◽  
Image Watermarking ◽  
Principal Component ◽  
Redundant Information ◽  
Gray Level ◽  
Watermark Image ◽  
Gray Level Image ◽  
Robust Image ◽  
Simulation Results ◽  
Better Than

In this paper, a novel gray-level image watermarking algorithm is presented for copyright protection. A method which encodes the gray-level secret information into bit sequence is developed. It uses the principal component analysis to extract the most valuable features of the watermark image and reduces lots of redundant information. The application of the proposed scheme makes the gray-level watermark capable of transparent hiding. Simulation results show that our method performs better than traditional methods.

scholarly journals Blind Image Watermarking in Canonical and Cepstrum Domains Based on 4-Connected t-o’clock Scrambling

Symmetry ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 266
Author(s):  
Farhana Shirin Chowdhury ◽  
Pranab Kumar Dhar ◽  
Kaushik Deb ◽  
Takeshi Koshiba
Keyword(s):  
Digital Watermarking ◽  
Copyright Protection ◽  
Image Watermarking ◽  
Superior Performance ◽  
Easy Access ◽  
Multimedia Content ◽  
Watermark Image ◽  
Tree Property ◽  
Multimedia Contents ◽  
Blind Image

Copyright protection of multimedia content is confronted with great challenges such as easy access to the Internet. Digital watermarking is widely applicable technique for copyright protection of multimedia contents. In this paper, a blind symmetric watermarking method in canonical and cepstrum domains based on four-connected t-o’clock scrambling is proposed. Initially, the watermark image is scrambled using the four-connected t-o’clock method to enhance the security. Then, the rotation operation is applied to the host image to extract the region where the watermark bits are embedded. After that, discrete linear canonical transform (DLCT) is applied to the extracted region to obtain the DLCT region. Cepstrum transform (CT) is performed on DLCT region to attain CT region. The CT region is then divided into non-overlapping blocks. The watermark bits are inserted into each block using max-heap and min-heap tree property. Experimental results illustrate that the proposed method shows high robustness against numerous attacks. Moreover, it produces high quality watermarked images and provides high security. Furthermore, it has superior performance to recent methods in terms of imperceptibility, robustness, and security.

Robust Digital Watermarking Algorithm on Combination of Fractal and Wavelet

2013 ◽  
Vol 401-403 ◽  
pp. 1462-1465
Author(s):  
Yu Hong Chang
Keyword(s):  
Digital Watermarking ◽  
Haar Wavelet ◽  
Image Distortion ◽  
Jpeg Compression ◽  
Watermark Image ◽  
Host Image ◽  
Fractal Images ◽  
Self Similar ◽  
Simulation Results

To improve the robustness of watermarking algorithms, this paper proposes a robust digital watermarking algorithm based on combination of fractal and wavelet. By key the algorithm transfers watermark information into self-similar fractal images, discretes Haar wavelet to host image, and embeds two fractal watermark image after fractal into Haar wavelet sub-band. Simulation results show that the algorithm has good robustness to image distortion as noise, JPEG compression, shear, filtering, etc.

scholarly journals Copyright Protection for Digital Certificate using Blind Watermarking Technique

2018 ◽  
Vol 3 (1) ◽  
pp. 75-79
Author(s):  
Harith Raad Hasan
Keyword(s):  
Wavelet Transform ◽  
Discrete Wavelet Transform ◽  
Copyright Protection ◽  
Color Space ◽  
Experimental Results ◽  
Digital Certificate ◽  
Discrete Wavelet ◽  
Blind Watermarking ◽  
Transform Domain ◽  
Watermark Image

This paper proposes a copyright protection system for digital certificate image using blind watermarking technique by applying discrete wavelet transform algorithm (DWT). The proposed technique utilizes three interrelated watermarks namely, Red watermark (RW), Green-watermark (GW) and Blue-watermark (BW). Firstly, RGB cover and RGB watermark image are divided for three color space R,G,B. Then the R component is chosen for embedding (RW), the B component is selected for embedding the (BW) and the G component is selected for embedding the (GW), R,G and B of the cover image are converted into the transform domain using DWT, and is subsequently decomposed into three levels viz.  LH1, LL2 and LL3 sub-bands. RW, GW and BW are then embedded onto LL3. Experimental results show that the performance of the proposed technique is very encouraging with average PSNR of 44 db, and NCC value of more than 0.99 for extracted watermarks after performing several types of attacks.

Research on Digital Watermarking Algorithm Based on Discrete Wavelet Transform and Singular Value Decomposition

2015 ◽  
Vol 713-715 ◽  
pp. 1843-1846
Author(s):  
Yan Yu Wang
Keyword(s):  
Wavelet Transform ◽  
Discrete Wavelet Transform ◽  
Digital Watermarking ◽  
Singular Values ◽  
Discrete Wavelet ◽  
Watermark Image ◽  
Original Image ◽  
Host Image ◽  
Important Means ◽  
Value Decomposition

Digital watermarking technology has become an important means of integrity and respect for people's authenticity, as well as users of copyright and intellectual property security and other interests such as the protection of digital works. In this paper, we proposed a watermarking algorithm based on discrete wavelet transform (DWT) of image and singular valued composition (SVD). The original image is decomposed with DWT,the watermarking image is decomposed with SVD after chaotic scrambling,and then the singular values of watermarking are embedded into some coefficients of decomposed original image. In this algorithm, after decomposing the original host image into four bands, we apply the SVD to watermark image,and modify DWT coefficients of the host image with the singular values of the watermark image. The outstanding features of the proposed algorithm are that it provides larger watermarking capacity and is more robust than others.

Sign in / Sign up

Export Citation Format

Share Document