scholarly journals Self embedding digital watermark using hybrid method against compression attack

2021 ◽  
Vol 24 (2) ◽  
pp. 864
Author(s):  
Nasr Eddine Touati ◽  
Abdelmounaim Moulay Lakhdar
Keyword(s):  
Digital Watermarking ◽  
Singular Value ◽  
Life Activity ◽  
New Methods ◽  
Digital World ◽  
Human Need ◽  
Joint Photographic Experts Group ◽  
Standard Life ◽  
Value Decomposition ◽  
Least Significant Bits

<p>In the modern time interacting with digital world become standard life activity, human need a way to protect properties as individuals or corporals, and we do that by embedding a digital mark to the target, and this technique call digital watermarking. But there still is a chance to manipulate or even remove this marks we embed for protection with various attacks like adding noises, compression-decompression or bits manipulations, and that why companions, individuals, laboratories are still developing new methods to embed this marks and make them more robust and more hard to detect for others. There are so many methods for digital watermarking, so we chose the least significant bits watermarking (LSB-watermarking) to provide an invisible digital watermarking, and on top of that we proceed with the blind LSB-watermarking method so that we don't get bind to the original image, and for our attack we chose compression joint photographic experts group (JPEG) compression because it’s the most used method for image and videos compression along with singular value decomposition (SVD) to make our mark as robust as possible. And the results we gain from our method are promising and it did give as high quality digital watermarking.</p>

scholarly journals Pengamanan Hak Cipta Citra Digital dengan Teknik Watermarking Menggunakan Metode Hybrid SVD dengan DWT

2021 ◽  
Vol 2 (11) ◽  
pp. 2145-2157
Author(s):  
Ondi Asroni ◽  
Dedy Ricardo Serumena
Keyword(s):  
Singular Value Decomposition ◽  
Digital Watermarking ◽  
Image Watermarking ◽  
Singular Value ◽  
Cover Image ◽  
Visible Watermark ◽  
Value Decomposition

Era zaman digital saat ini, internet telah menjadi sebuah kebutuhan sehari-hari, yang memberikan kemudahan terhadap pengguna untuk melakukan aktivitas transmisi file, namun demikian data tersebut membutuhkan proteksi dari tangan yang tidak bertanggung jawab. Dalam penelitian ini di ajukan sebuah metode digital watermarking dalam melakukan perlindungan terhadap motif batik. Adapun algoritma yang diterapkan yaitu Hybrid Singular Value Decomposition dengan Discrete Wavelete Transform, setelah dilakukan experimen penerapan Hybrid Image Watermarking DWT dengan SVD nilai alpha dapat mempengaruhi tingkat imperceptibility terhadap citra watermarked, karena nilai alpha menunjukkan tingkat ketampakan (visible) watermark pada cover image. Semakin rendah nilai alpha maka tingkat ketampakan watermark semakin berkurang dan tingkat imperceptibility semakin tinggi. Dari pengujian yang dilakukan dengan object motif batik ditemukan nilai alpha terbaik yaitu nilai alpha 0.01, karena mendapatkan nilai PSNR tertinggi dari yang lainnya, sedangkan Berdasarkan pengujian tingkat robustness metode Hybrid Image Watermarking DWT-SVD pada subband LL memiliki tingkat ketahanan yang cukup tinggi terhadap upaya menghilangkan watermark yang menjadi identitas kepemilikan sah terhadap suatu citra digital selama citra watermarked tidak direkayasa dengan serangan noise.

scholarly journals Texture Directionality-Based Digital Watermarking in Nonsubsample Shearlet Domain

2017 ◽  
Vol 2017 ◽  
pp. 1-14
Author(s):  
Jian Zhao ◽  
Shuaishuai Fan ◽  
Jian Jia ◽  
Shunli Zhang ◽  
Bo Jiang ◽  
...  
Keyword(s):  
Digital Watermarking ◽  
Wavelet Transforms ◽  
Rapid Development ◽  
Singular Value ◽  
Discrete Wavelet ◽  
Shearlet Transform ◽  
Multimedia Technologies ◽  
Edge Features ◽  
Value Decomposition ◽  
Transform Domains

Digital watermarking is a technique used to protect an author’s copyright and has become widespread due to the rapid development of multimedia technologies. In this paper, a novel watermarking algorithm using the nonsubsample shearlet transform is proposed, which combines the directional edge features of an image. A shearlet provides an optimal multiresolution and multidirectional representation of an image based on distributed discontinuities such as edges, which ensures that the embedded watermark does not blur the image. In the proposed algorithm, the nonsubsample shearlet transform is used to decompose the cover image into directional subbands, where different directional subbands represent different directional and textured features. The subband whose texture directionality is strongest is selected to carry the watermark and is thus suitable for the human visual system. Next, singular value decomposition is performed on the selected subband image. Finally, the watermark is embedded in the singular value matrix, which is beneficial for the watermarking robustness and invisibility. In comparison with related watermarking algorithms based on discrete wavelet transforms and nonsubsample contourlet transform domains, experimental results demonstrate that the proposed scheme is highly robust against scaling, cropping, and compression.

Singular Value Decomposition (SVD) Based Attack on Different Watermarking Schemes

2006 ◽  
Vol 2 (3) ◽  
pp. 149-154 ◽  
Author(s):  
Milind Engedy ◽  
Munaga. V. N. K. Prasad ◽  
Ashutosh Saxena
Keyword(s):  
Intellectual Property ◽  
Singular Value Decomposition ◽  
Property Rights ◽  
Intellectual Property Rights ◽  
Digital Watermarking ◽  
Singular Value ◽  
Digital Content ◽  
Necessary Condition ◽  
Value Decomposition ◽  
Excellent Tool

Digital Watermarking is an excellent tool at the disposal of the owners of the digital content to protect their Intellectual Property Rights (IPR). In this paper we present an attack on several watermarking schemes that forgo their claims of proving ownership of digital content. The attack takes the advantage of one-to-many relationship between the Singular value matrix and the decomposing matrix. In this paper we prove that the two ways one-to-one relationship between the watermark and the watermark dependent pattern to be hidden in the image as a necessary condition to invalidate the multiple claims of ownership of digital content. We also recommend the standardization of watermarking schemes and registration of watermarks with legal authorities so as to make the system transparent.

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