In this paper, the authors conduct a review on redundant wavelet transform (RDWT) in video signal processing. As an over-complete version of discrete wavelet transform (DWT), RDWT provides several advantages over the traditional DWT. In video coding area, we utilize its shift-invariant property and its phase-diverse multihypothesis, which are not provided by DWT, to build high performance video...

A robust image data-hiding scheme for copyright protection is proposed and simulated. The scheme uses a combination of redundant discrete wavelet transform (RDWT), singular value decomposition (SVD) and spread spectrum technique. The embedding is done by spreading the copyright mark into the singular values of middle frequency sub-bands of RDWT coefficients of the cover image. Chaotic sequence ...

In Digital era sharing of images have become very common and raises the risk of using it for unethical and fraudulent purposes with the help of manipulation tools. Digital image watermarking is one way to protect the digital information (text, images, audio, and video) from fraudulent manipulations. Digital Image Watermarking is a process of implanting data in the original image for authenticat...

This paper introduces a segmentation algorithm for object-based image coding techniques. This scheme is based on Discrete Wavelet Transform (DWT)/Redundant Discrete Wavelet Transform (RDWT) and Multiresolution Markov Random Field (MMRF). DWT based MMRF works well for noise-free images. It merges details in the original image with their respective visual objects and divides the image into differ...

In recent years chaos has received a great deal of attention from the researches specialized in communications, signal and image processing. The complexity property of the chaotic signal raised the idea of using such signals in secure communications. Digital image watermarking is a technique mainly developed for copyright protection and image authentication and it can be considered as one appli...

Recent advances in the Internet have simplified data manipulation on the web, so protection of copyrighted contents is a tough task. Digital image watermarking is a solution to this problem, which embed the watermark with intellectual property rights into images. Developing the methods that satisfy both imperceptibility and robustness is the main challenge for researchers. In this paper a novel...

This paper presents a 3-level RDWT biometric watermarking algorithm to embed the voice biometric MFC coefficients in a color face image of the same individual for increased robustness, security and accuracy. Phase congruency model is used to compute the embedding locations which preserves the facial features from being watermarked and ensures that the face recognition accuracy is not compromise...

Digital watermarking techniques have been proposed for copyright protection and authentication of multimedia data. In this paper we are providing one such watermarking scheme for color images.The suggested method presents a watermarking scheme based on a Redundant Discrete Wavelet Transform (RDWT), Discrete Cosine Transform (DCT) and Singular Value Decomposition (SVD) in which two level RDWT is...

In this paper we present an experimental study of edge turbulence in the Large Plasma Device at UCLA. We utilize a scan discharge power and prefill pressure (neutral density) to show experimentally that turbulent density fluctuations decrease with decreasing gradient, as predicted for resistive drift-wave (RDWT). As expected RDWT, observe cross-phase between potential is close 0. Moreover, addi...

In recent years, watermarking has become an attractive field in areas like copyright protection, image authentication and biomedical engineering. Many literatures have reported about discrete wavelet transform (DWT) watermarking techniques for data security. However, DWT based watermarking schemes are found to be less robust against image processing attacks. In this paper, an attempt is made to...