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Robustness and invisibility are all important points in video watermarking technology. In this paper, we propose the new scheme to increase the robustness and retain the invisibility as good. Through the experiment, we get the linear curve relationship between QP values and watermark strength values, and using that relationship, we get the better detection rate increased by 7%∼14%. In spite of increasing...
Due to its superior performance, robust loss less data hiding algorithm based on statistics shifting has become hotspot in the field of data hiding recently. In this paper, on the basis of analyzing the principle of the statistics shifting algorithm, a novel robust loss less data hiding algorithm based on region selection is proposed. The proposed scheme divides a cover image into a number of non-overlapping...
This paper presents a new approach for hiding information in digital audio based on the audio-to-image wavelet transform (A2IWT) and vector quantization (VQ). In our scheme, the cover audio signal is first transformed into an image by utilizing the wavelet transform and re-sampling the coefficients, then the secret data are embedded in the obtained image using a VQ-based image steganographic scheme,...
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...
A method of reversible video image regions of interest anonymization for applications in video surveillance systems is described. A short introduction to the anonymization procedures is presented together with the explanation of its relation to visual surveillance. A short review of state of the art of sensitive data protection in media is included. An approach to reversible Region of Interest (ROI)...
In this paper, we present a new key generation model for image hashing using neural network, which does not embed any data into the content but is able to extract meaningful data from target image. This model trains artificial neural network to assign predefined code and uses this trained artificial neural network weight and the coordinates of the selected feature sub blocks of target image as keys...
Traditional Arnold transform is used widely in information hiding technology, but because of its long transform periodicity, it costs large time and computation memory. This paper introduces an new anti-Arnold transform algorithm, which reduces iterative times of anti-transform. With the combination of image blending, discrete cosine transform and new anti-Arnold transform, an algorithm based on the...
In order to solve the copyright issues brought by the distributed rendering system for three-dimensional model, we present this blind watermarking algorithm with high transparency and robustness. In the generation step, we compressed the original watermark information using the UGM model of gray system, for reducing the amount of information embedded in watermark. In the embedding step, we replace...
In the recent years, watermarking algorithms were designed based on different dynamical chaotic systems. In this paper we propose some ideas to improve the performances of this kind of techniques using the PWLCM, the DCT and luminance transformation of the image in order to hide the watermark information in an invisible and robust way.
Digital watermarking technology is a frontier research field, and it serves an important role in information security. According to the analysis of the definition and basic characteristics of digital watermarking technology, the system model of digital watermarking is given. The system consists of two modules which are watermark embedding module and watermark detection and extraction module. In view...
A bi-watermarking algorithm basing on Contourlet transform is proposed in this paper. The algorithm adopts different methods to insert watermark into the low frequency and high frequency of the host image respectively. Firstly, perform Contourlet transform to the host image, then choose the low frequency to embed the watermark combined with Singular Value Decomposition(SVD), finally, putting coefficients...
Digital watermarks provide the capability to insert additional information onto various media, such as still images, movies and audio, by utilizing features of the content. Several methods for printed documents have already been proposed using features of the text or images. In order to overcome the disadvantages of existing methods, we have proposed a new information hiding scheme for printed documents;...
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.
In this paper, we propose an algorithm for video signature using music videos and news video for our study. The algorithm was developed based on our earlier work with an improvement (reducing the steps) on the process of generating video signature. Thus, revised process reduces the amount of processing time needed tremendously. In addition, besides color as a feature, we introduce the addition of...
In recent years, digital watermarking technologies are considered to be important means to protect digital image copyrights. In this paper, we combine a non-invertible watermark scheme with an HVS model adaptive watermark. The application of adaptive watermarks improves visual imperceptibility. However, we find that an adversary is able to apply ambiguity attacks on the non-invertible watermark scheme...
It is more likely to prevent the watermark from JPEG-compression attack, when it is embedded into maximum value of the SVD. However, embedding the watermark with the same intensity into them may distort the watermarked image to a large extent. To solve this problem, a novel robust image-watermark algorithm is proposed with the characteristics of selective embedding intensity based on the non-uniform...
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...
Take advantage of the feature that the energy of the image would gather and spread on four components in the subimage after first-order GHM multi-wavelet transform. Propose an information hiding algorithm based on modifying the direction of color mod vector structure (CMVS) of four GHM first-order sub-images (LL2, LH2, HL2 and HH2). The direction of CMVS represents the information. The maximum change...
With rapidly growing interest in ways to hide information, a large number of schemes have been proposed for watermarks and other information in digital pictures, video, audio and other multimedia objects. In an attempt to overcome this problem, watermarking has been suggested in the literature as the most effective means for copyright protection and authentication. The main focus of this thesis is...
A new adaptive reversible watermarking algorithm based on wavelet lifting scheme is proposed in this letter. In the algorithm, watermarking image is embedded in the sub-band LL1 generated from 1-level wavelet lifting scheme, and the position information with small size is kept as a secret matrix, the threshold value can be adaptively selected according to the peak-signal to noise rate, such that watermarked...
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