In this paper, we propose a high capacity, self-synchronized, lossless audio watermarking algorithm based on the alpha (‘α’) statistic modulation. Here ‘α’ is related to the correlation among any given sequence i.e audio samples and it is modulated according to the watermark bit stream. The embedding scheme is tested in both the time domain and DWT domain. Though the time domain embedding reduc...

The most sensitive Arabic text available online is the digital Holy Quran. This sacred Islamic religious book recited by all Muslims worldwide including non-Arabs as part of their worship needs. Thus, it should be protected from any kind tampering to keep its invaluable meaning intact. Different characteristics letters like vowels (), Kashida (extended letters), and other symbols in Quran must ...

Abstract: This work examines the effect of block sizes on attributes (robustness, capacity, time of watermarking, visibility and distortion ) of watermarked digital images using Discrete Cosine Transform (DCT) function. The DCT function breaks up the image into various frequency bands and allows watermark data to be easily embedded. The advantage of this transformation is the ability to pack in...

The rapid growth and increasing of information technology and computer network have caused that data transition in digital form is considered more and more. The main disturbance of owners and producers of digital products is to protect distribution and unauthorized copying. An effective solution for this problem is digital watermarking techniques. The purpose of audio digital watermarking is to...

the secure embedding scheme (see Section II), it is hard to generate a watermarked version of c which has a low correlation with k 0. An estimation attack usually yields a watermarked object that still correlates well with k 0 ; a judge will reject the accusation on such an object, as it can only originate from a malicious seller (k 0 is only available to the seller). • Finally, can attempt to ...

Copyright notification and enforcement, authentication, covert communication, and hybrid transmission are examples of emerging multimedia applications for digital watermarking methods, methods for embedding one signal (e.g., the digital watermark) within another “host” signal to form a third, “composite” signal. The embedding is designed to achieve efficient trade-offs among the three conflicti...

due to high speed computer networks, the use of digitally formatted data has increased many folds.the digital data can be duplicated and edited with great ease which has led to a need for effectivecopyright protection tools. digital watermarking is a technology of embedding watermark withintellectual property rights into images, videos, audios and other multimedia data by a certainalgorithm .di...

In this paper a reversible watermarking method based on generalized integer transform of a vector with n pixels is presented. This method was firstly introduced by Alattar (called Alattar’s method) has been concerned and expanded because it can achieve high embedding capacity without losing the implication of the cover. According to Alattar’s method, n-1 bits could be embedded into a vector wit...

Quantization index modulation (QIM) methods, a class of digital watermarking and information embedding methods, achieve very e cient trade-o s among the amount of embedded information (rate), the amount of embedding-induced distortion to the host signal, and the robustness to intentional and unintentional attacks. For example, we show that against independent additive Gaussian attacks, which ar...