Multimedia Copyright Protection Scheme Based on the Direct Feature-Based Method

2013 ◽  
pp. 412-439
Author(s):  
Rimba Whidiana Ciptasari ◽  
Kouichi Sakurai
Keyword(s):  
Digital Watermarking ◽  
Copyright Protection ◽  
Relational Databases ◽  
Geospatial Data ◽  
Malicious Attacks ◽  
Trade Off ◽  
Protection Scheme ◽  
Text Document ◽  
Viable Solution ◽  
Feature Based

Researchers have devised the direct feature-based method to improve traditional digital watermarking whilst developing the copyright protection scheme. A discussion on various multimedia copyright protection schemes based on the direct feature-based method (e.g., image, audio, text document, geospatial data, and relational databases) follows. In conclusion, the authors show that a good copyright protection scheme should not only be robust enough to endure acceptable manipulations, but also secure enough to withstand malicious attacks. In addition, the direct feature-based method can be considered a viable solution to the trade-off between data payload, fidelity, and robustness.

A Novel Hybrid Discrete Cosine Transform Speeded Up Robust Feature-Based Secure Medical Image Watermarking Algorithm

2020 ◽  
Vol 10 (11) ◽  
pp. 2588-2599
Author(s):  
Saqib Ali Nawaz ◽  
Jingbing Li ◽  
Uzair Aslam Bhatti ◽  
Anum Mehmood ◽  
Raza Ahmed ◽  
...  
Keyword(s):  
Discrete Cosine Transform ◽  
Digital Watermarking ◽  
Copyright Protection ◽  
Image Watermarking ◽  
Image Feature ◽  
Feature Descriptor ◽  
Cosine Transform ◽  
Speeded Up Robust Features ◽  
Feature Based ◽  
Dct Coefficients

With the advancement of networks and multimedia, digital watermarking technology has received worldwide attention as an effective method of copyright protection. Improving the anti-geometric attack ability of digital watermarking algorithms using image feature-based algorithms have received extensive attention. This paper proposes a novel robust watermarking algorithm based on SURF-DCT perceptual hashing (Speeded Up Robust Features and Discrete Cosine Transform), namely blind watermarking. We design and implement a meaningful binary watermark embedding and extraction algorithm based on the SURF feature descriptor and discrete-cosine transform domain digital image watermarking algorithm. The algorithm firstly uses the affine transformation with a feature matrix and chaotic encryption technology to preprocess the watermark image, enhance the confidentiality of the watermark, and perform block and DCT coefficients extraction on the carrier image, and then uses the positive and negative quantization rules to modify the DCT coefficients. The embedding of the watermark is completed, and the blind extraction of the watermark realized. Correlation values are more than 90% in most of the attacks. It provides better results against different noise attacks and also better performance against rotation. Transparency and high computational efficiency, coupled with dual functions of copyright protection and content authentication, is the advantage of the proposed algorithm.

A Print-Scan Resilient Watermarking Scheme Based on the Numbers of the DCT Positive and Negative Coefficients

2013 ◽  
Vol 310 ◽  
pp. 650-655
Author(s):  
Yun Fei Jiang ◽  
Yong Gang Fu
Keyword(s):  
Digital Watermarking ◽  
Copyright Protection ◽  
The Internet ◽  
Trade Off ◽  
Digital Multimedia ◽  
Positive And Negative Coefficients ◽  
Watermarking Scheme

Copyright protection has drawn much attentions especially in the advent of computer and the internet. Illagal copying of digital multimedia has been much easier because of widely using of the modern technologies.This paper proposes a novel digital watermarking algorithm based on the numbers of the blocked middle DCT positive and negative coefficients. Embedding watermark into the middle frequency of DCT is a perfect idea and it can receive a trade-off between robustness and imperceptibility.We utilized the embedding strength to get a balance between their robustness and imperceptibility. The results show that the algorithm is robust to print and scan process.

A DCT-Domain System for Digital Watermarking

2013 ◽  
Vol 321-324 ◽  
pp. 2609-2612
Author(s):  
Yan Liang ◽  
Gao Yan ◽  
Chun Xia Qi
Keyword(s):  
Signal Processing ◽  
Digital Watermarking ◽  
Copyright Protection ◽  
Random Sequence ◽  
Multimedia Data ◽  
Dct Domain ◽  
Digital Document ◽  
Dct Coefficients ◽  
Processing Techniques ◽  
Signal Processing Techniques

Digital watermarking has been proposed as a solution to the problem of copyright protection of multimedia data in a networked environment. It makes possible to tightly associated to a digital document a code allowing the identification of the data creator, owner, authorized consumer, and so on. In this paper a new DCT-domain system for digital watermarking algorithm for digital images is presented: the method, which operates in the frequency domain, embeds a pseudo-random sequence of scrambled image in a selected set of DCT coefficients. After embedding, the watermark is adapted to the image by exploiting the masking characteristics of the human visual system, thus ensuring the watermark invisibility. By exploiting the statistical properties of the embedded sequence, the mark can be reliably extracted without resorting to the original uncorrupted image. Experimental results demonstrate that the watermark is robust to several signal processing techniques, including JPEG compression, cut, fuzzy, addition of noise, and sharpen.

Digital Watermarking for 3D Polygonal Model Based on Wavelet Transform

1999 ◽  
Author(s):  
Hiroaki Date ◽  
Satoshi Kanai ◽  
Takeshi Kishinami
Keyword(s):  
Wavelet Transform ◽  
Digital Watermarking ◽  
Copyright Protection ◽  
Affine Transformation ◽  
Wavelet Coefficient ◽  
Original Data ◽  
Geometric Error ◽  
Digital Data ◽  
Cad Cam ◽  
Polygonal Model

Abstract Recently, much interest is being taken in a method to protect the copyright of digital data and prevent illegal duplication of it. However, in the area of CAD/CAM and CG, there are no effective ways to protect the copyright of the 3D geometric models. As a first step to solve this problem, a new digital watermarking method for 3D polygonal models is introduced in this paper. Watermarking is one of the copyright protection methods where an invisible watermark is secretly embedded into the original data. The proposed watermarking method is based on the wavelet transform (WT) and multi-resolution representation (MRR) of the polygonal model. The watermark can be embedded in the large wavelet coefficient vectors at various resolution levels of the MRR. This makes the embedded watermark imperceptible and invariant to the affine transformation, and also makes the control of the geometric error caused by the watermarking reliable.

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