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A reversible watermarking algorithm in low distortion is proposed for color images in this paper. Through analyzing the correlation of different color components in color image, and expanding prediction pixels by adaptive prediction operator, the embedding of watermark data and the retrieving of the original image are realized. Experiments show that, this algorithm achieves better effect compared...
With the increasing popularity of the Internet, the use of multimedia information is increasing, therefore, copyright protection of multimedia information has become a very urgent task. The most studied technique is the digital watermark. It can effectively identify media ownership, and media legitimate user information. This paper studies the LSB algorithm, including the algorithm of the function,...
Digital watermarking, the technology of embedding special information into multimedia data, is a topic that has recently gained increasing attention all over the world. The watermark of digital images, audio, video, and other media products in general has been proposed for resolving copyright ownership and verifying the integrity of content. The paper first introduced the definition and basic framework...
In this paper, a new blind and spatial-temporal feature based video watermarking algorithm for H.264/AVC is proposed. The novelty of the scheme lies in calculating an average frame which can represent the spatial-temporal characteristic of video, and creating a compound watermark by uniting the copyright information with average frame. This makes the watermark secure and robust. The other novel feature...
Digital watermarking has been an effective means for copyright protection and digital rights management (DRM). One of the current trends for researches in this field would focus on reversible data hiding. Considering the ease of implementation and employing the inherent characteristics of original images, we propose our reversible data hiding algorithm with the rhombus relationships of original pixels...
In this paper, we propose a new loss less data hiding method by the adaptive coefficient-bias (ACB) algorithm. The proposed ACB algorithm involves two main steps: block-mean removal and pixel isolating. The block-mean removal first generates the difference blocks, which are obtained by subtracting each pixel of the host block from the predicted mean. Then, the pixel isolating minimizes distortion...
Through the in-depth analysis of the basic principles and existing research results of digital watermarking, drawing on the existing theory of the asymptotic grid, this paper presents a 2D vector graphics watermarking algorithm based on foundational contour. This algorithm by reducing the changes of the main body information and removing the extracted foundational contour in the transform domain embeds...
This paper designs a novel hiding strategy based on an equivalence relation, which can remarkably enhance the quality of stego image without sacrificing the security and capacity of original steganography schemes. According to a constructed equivalence relation based on the capacity of hiding units, all hiding units can be partitioned into equivalence classes. Following that, the hiding procedure...
This paper starts from security needs of electronic notes in the present situation of e-commerce and discusses the application of information hiding technology and relative concepts. Then it presents a algorithm of information hiding technology that applies in the electronic notes system, including embedded hidden information algorithm and hidden information extraction algorithm, and describes the...
This paper proposes a semi-fragile watermarking algorithm resisting to RST (Rotation, Scaling, Translation). The algorithm can be used to verify the authenticity and integrity of image content. Firstly, the algorithm generates watermarking information by using the edge of the scaled image, and embeds watermarking information based on human visual system. Before detecting watermarking, the parameters...
In this paper, a novel arrangement for quantizer levels in the Quantization Index Modulation (QIM) method is proposed. Due to perceptual advantages of logarithmic quantization, and in order to solve the problems of a previous logarithmic quantization-based method, we used the compression function of ?? -Law standard for quantization. In this regard, the host signal is first transformed into the logarithmic...
This paper presents a watermarking algorithm based on image segmentation, in order to improve the security of the watermark, take the DFT algorithm to deal with the watermark process. The results showed that watermark has excellent robustness to some attack.
RST invarian watermarking scheme is proposed in this paper based on the SIFT feature points and improved pseudo-Zernike moment. Firstly, feature points are detected using SIFT, and some suitable points are selected to form localized feature regions which are scaled to a standard sized. After computing these regions by the improved pseudo-Zernike moments of these regions , the digital watermark are...
This paper proposes an audio watermark embedding and extraction algorithm based on fast Fourier transform (FFT). This algorithm makes full use of human auditory system (HAS) characteristic, embeds watermarking information into the phase coefficient of audio signal after FFT. The experimental results show that the audio watermarking generated with the proposed algorithm are inaudible and robust characteristics...
In this paper, we propose a blind watermarking algorithm for digital image based on DCT and SVD. The algorithm can satisfy the transparence and robustness of the watermarking system very well. The experiment based on this algorithm demonstrates that the watermarking is robust to the common signal processing techniques including JEPG compressing noise, low pass filter, median filter, geometric cropping...
Rotation attack can destroy the synchronization of the watermark detector and the watermarking, even a slight rotating may invalidate the detection of watermarks. Resisting to the rotation attack, a blind video watermarking algorithm is proposed on the basis of combinding the Zernike moments and singular value decomposition (SVD). First choose the embedding areas on the luminance component. Then make...
In this paper, we introduce a robust image watermarking method based on bi-dimensional empirical mode decomposition (BEMD) against geometric distortion. Based on the characteristics of the image theory and human visual system, the proposed method makes use of orthogonal properties of empirical mode decomposition to achieve the BEMD transform on the image. The image is decomposed into a series of IMFs...
A digital image watermarking algorithm based on Fourier domain is proposed. This algorithm calculates an Invariant Centroid of the image and uses it as the origin of logarithm polar mapping (LPM). Then two-dimensional Discrete Fourier Transform (DFT) is performed on the LPM image. And then the amplitude of intermediate frequency is used as the watermarking embedding domain. In order to enhance the...
In this paper, we propose a blind watermarking algorithm for digital image based on DCT and SVD. The algorithm can satisfy the transparence and robustness of the watermarking system very well. The experiment based on this algorithm demonstrates that the watermarking is robust to the common signal processing techniques including JEPG compressing noise, low pass filter, median filter, geometric cropping...
In this paper, a new audio watermarking algorithm is proposed to accomplish both copyright protection and content authentication with localization. Compared to the conventional algorithms, the feature of the proposed algorithm is that only an encrypted watermark is embedded in the approximate wavelet coefficients based on the instantaneous mixing model of the independent component analysis (ICA) system...
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