In this paper, an SVD-based perceptual fidelity metric is reviewed and used in the context of objective quantification of image watermarking fidelity for two stateof-the-art Image Adaptive SVD-based Watermarking Schemes. The proposed metric makes use of a Human Visual System perceptual model in the wavelet domain. The robustness of the watermarking schemes against JPEG compression and resizing ...

In this paper, a novel approach to image indexing is presented using content-based watermarking. Some concepts associated with the application of watermarking to image indexing are discussed and a segmentation algorithm, appropriate for content-based watermarking, is presented. The segmentation algorithm is applied on reduced images and derives the exact same objects when performed on either th...

This paper introduces current watermarking techniques available from the literatures. Requirements for medical watermarking will be discussed. We then propose a watermarking scheme that can recover the original image from the watermarked one. The purpose is to verify the integrity and authenticity of DICOM images. We used ultrasound (US) images in our experiment. SHA-256 of the whole image is e...

In this paper, a novel approach to image indexing using content-based watermarking is presented. The proposed system uses color image segmentation and watermarking in order to facilitate content-based indexing, retrieval and manipulation of digital images and image regions. A novel segmentation algorithm is applied on reduced images and the resulting segmentation mask is embedded in the image u...

This paper proposes a novel compression combined digital image watermarking scheme based on singular value replacement technique. Image compression is achieved using Huffman encoding technique. Huffman encoding is an entropy encoding algorithm offering lossless image compression. The proposed watermarking scheme combines Integer wavelet transform (IWT) with singular value decomposition (SVD). F...

Digital image authentication refers to all the techniques performing anti-falsification, digital image copyright protection, or access control. A large number of DIA techniques have been developed to authenticate digital images, including cryptography-based digital image authentication (CBDIA) techniques and data-hiding-based digital image authentication (DHBDIA) techniques. This paper not only...

The field of Signal Processing has witnessed the strong emergence of a new technique, the Blind Signal Processing (BSP) which is based on sound theoretical foundation. An offshoot of the BSP is known as Blind Source Separation (BSS). This digital signal processing techniques have a wide and varied potential applications. The term blind is indicative of the fact that both the source signal and t...

With the increasing use of internet and major development in technology, transmission of digital media is being affected by a large number of illegal interventions. As a valuable solution to this, watermarking provides a secure way for channelizing the digital media (image, audio or video). Digital Watermarking is a method of embedding data (watermark) into a host image without degrading its or...