Transmission, manipulation and storage of images in digital format is rapidly becoming an everyday practice. Desktop publishing, digital libraries, image databases and the World Wide Web are only some of the application areas that are strongly related to digital imaging technology. The new digital, networked environment necessitates the development of robust and trustworthy encryption, authenti...

By expansion of digital multimedia and networking technology, the problem of ownership protection has become increasingly important. Digital watermarking is an efficient way for copyright protection of digital images. Traditional watermarking techniques degrade the quality of host image by embedding a watermark logo. Facing this problem, a new watermarking approach called zero-watermarking has ...

s. As demand for digital fulltext-image with fast development of super high speed communication network is increasing in digital contents industry, its scale is increasing exponentially every year. However, this fulltext-image is illegally reprinting and distributing widely, and this brings about the problems of its copyrights and proprietary rights. To solve this problems, many techniques such...

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...

With the rapid development of information technology, multimedia data are transmitted through digital media. Always the transmission media is not secure. Hence there is a need to protect the information during transmission. To transmit the image information in a secured way, digital image watermarking is one of the best data hiding technique. In image watermarking technique there is a chance to...

Digital watermarks have been proposed in recent literature as the means for copyright protection of multimedia data. In this paper we address the capability of invisible watermarking schemes to resolve copyright ownerships. We will show that rightful ownerships cannot be resolved by current watermarking schemes alone. In addition, in the absence of standardization of watermarking procedures, an...

Digital Image Watermarking is used recently to secure the image by embedding another digital image. It is typically used to identify ownership of the copyright of the signal. Frequency domain transformation methods used widely in Digital Image Compression and Digital Image Watermarking. They reduce the weakness of classics digital image watermarking such as Least Significant Bit (LSB) methods w...

Digital watermarking technique is proposed for copyright protection or ownership identification of digital media, such as audio, image, video, or text. A digital signature or digital watermark is embedded in the host media. The digital watermark is hidden such that it is perceptually and statistically undetectable. This watermark can then be extracted from the host media and used to identify th...

Digital images are used in almost every area of the life. The advent of digital images has brought a lot of progress to various scientific areas, but also many new threads have been opened. One of the main problems with digital data and images is unauthorized replication and use. Digital watermarking is one of the techniques for protecting copyrights of digital images by embedding the additiona...

The copyright protection of digital content became a critical issue now-a-days. Digital image watermarking is one of the techniques used to protect digital content. A novel image watermarking approach based on quantization and back propagation neural network is proposed in this paper. The cover image is decomposed up to 3-levels using quantization and DWT. The bitmap is selected as a watermark....