نتایج جستجو برای: watermarking
تعداد نتایج: 6727 فیلتر نتایج به سال:
Digital audio watermarking techniques are widely applied to protect the ownership of digital audio media. This study presents an audio watermarking scheme for audio e-leaning contents. The proposed audio watermarking method can significantly reduce the bit error rates, so enhance the robustness against common attacks. The experimental results under common attacks demonstrate that our watermarki...
In this work we propose a novel H.264/CAVLC structure-preserving substitution watermarking algorithm. The proposed watermarking algorithm enables extremely efficient watermarking by simple bit substitutions. Furthermore our watermarking algorithm can be applied in applications scenarios, that require exact structure-preservation. The quality and robustness of the approach are in depth evaluated...
1 M. Tech Student 2 M. Tech (Ph. D) 1,2 Department of Computer Engineering 1,2 Galgotias University, Greater Noida, India Abstract— Digital watermarking is one of the proposed solutions for copyright protection of multimedia data. A watermark is a form of image or text that is impressed onto paper, which provides evidence of its authenticity. A digital watermark is digital data embedded in some...
DCT-based transformed domain watermarking algorithm has some flaws In the aspects of embedding position, embedding strength and embedding method, which have an important influence on watermarking embedding and watermarking extracting. In this paper we discussed these key techniques on DCT-based transformed domain watermarking algorithm and spatial domain digital watermarking algorithm, and thei...
As the use of digital multimedia data is increasing day by day, the necessity of protecting the data from illegal copyright infringement, fingerprinting and other malicious attacks is also increasing. Watermarking is the process of embedding a piece of secret data to the host data to protect from these attacks. In audio watermarking a piece of data is embedded into the original host signal with...
one of the most favored way to lessen data complexity is to conceal details or redundant information. Watermarking is a technique which consists in inserting a robust and imperceptible brand in a host image, in order to defend it against illegal plagiarism. Being reversible, the watermarking information like numbers, texts and images can be embedded digital media formats such as Audio, Video an...
This paper discusses inherent vulnerabilities of digital watermarking that affect its mainstream purpose of rights protection. We ask: how resistant is watermarking to un-informed attacks ? There are a multitude of application scenarios for watermarking and, with the advent of modern content distribution networks and the associated rights assessment issues, it has recently become a topic of inc...
A cryptographic watermarking scheme embeds message into a program while preserving its functionality. Essential security of the watermarking schemes requires that no one could remove the marking message of a marked program without substantially changing its functionality. In practical applications, it is common to mark a program with multiple different messages, e.g. in the secretleaker tracing...
This paper presents a new multi-band wavelet watermarking scheme. Compared with conventional watermarking schemes implemented in two-band wavelet domain, by incorporating the principal component analysis (PCA) technique the proposed blind watermarking in the multiband wavelet domain can achieve higher perceptual transparency and stronger robustness. Specifically, the developed watermarking sche...
On the basis of the research of wavelet transform and digital watermarking technology, this paper proposed a self-adaptive discrete wavelet transform (DWT) digital watermarking algorithm, which can achieve the purpose of embedding hidden watermarks by decompose three-level wavelet of image and decompose bit-plane of watermarking gray scale image by Arnold scrambling transformation. Layer adapti...
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