Journal ArticleDOI
A watermarking algorithm based on chirp z-transform, discrete wavelet transform, and singular value decomposition
TLDR
This study introduces a novel watermarking scheme based on the discrete wavelet transform (DWT) in combination with the chirp z-transform (CZT) and the singular value decomposition (SVD).Abstract:
Digital watermarking has attracted increasing attentions as it has been the current solution to copyright protection and content authentication which has become an issue to be addressed in multimedia technology. This study introduces a novel watermarking scheme based on the discrete wavelet transform (DWT) in combination with the chirp z-transform (CZT) and the singular value decomposition (SVD). Firstly, the image is decomposed into its frequency subbands by using 1-level DWT. Then, the high-frequency subband is transformed into z-domain by using CZT. Afterward by SVD, the watermark is added to the singular matrix of the transformed image. Finally, the watermarked image is obtained by using inverse of CZT and inverse of DWT. This algorithm combines the advantages of all three algorithms. The experimental result shows that the algorithm is imperceptible and robust to several attacks and signal processing operations.read more
Citations
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Journal ArticleDOI
SVD based fragile watermarking scheme for tamper localization and self-recovery
TL;DR: The proposed scheme provides an average detection rate of more than 99.5 % and average recovery of 28 dB for a 50 % tampering and shows a superior performance, when it is compared with the earlier proposed schemes.
Journal ArticleDOI
A novel hybrid of DCT and SVD in DWT domain for robust and invisible blind image watermarking with optimal embedding strength
TL;DR: Experimental results demonstrate the better effectiveness of the proposed watermarking scheme in the perceptual quality and the ability of resisting to conventional signal processing and geometric attacks, in comparison with the related existing methods.
Journal ArticleDOI
An enhanced hybrid image watermarking scheme for security of medical and non-medical images based on DWT and 2-D SVD
TL;DR: Experimental result shows, significant enhancement in both imperceptibility and robustness with the average of 46.9496 db and more than 99% respectively, while image blocking makes the capacity independent from the size of the host image.
Journal ArticleDOI
A secure blind discrete wavelet transform based watermarking scheme using two-level singular value decomposition
TL;DR: Experimental result shows when the scheme is subjected to ten most common types of signal processing and geometric attacks, using the second level of SVD makes it highly robust and imperceptible while it is independent from type of image.
Journal ArticleDOI
Robust non-blind color video watermarking using QR decomposition and entropy analysis
TL;DR: This work addresses the issue of drops in visual quality of recent video watermarking methods by introducing a robust and imperceptible non-blind color video frame water marking algorithm.
References
More filters
Journal ArticleDOI
Image quality assessment: from error visibility to structural similarity
TL;DR: In this article, a structural similarity index is proposed for image quality assessment based on the degradation of structural information, which can be applied to both subjective ratings and objective methods on a database of images compressed with JPEG and JPEG2000.
Journal ArticleDOI
Digital Image Watermarking Using Discrete Wavelet Transform and Singular Value Decomposition
Chih-Chin Lai,Cheng-Chih Tsai +1 more
TL;DR: A hybrid image-watermarking scheme based on discrete wavelet transform (DWT) and singular value decomposition (SVD) is proposed, which is able to withstand a variety of image-processing attacks.
MonographDOI
Text-to-Speech Synthesis
TL;DR: Text-to-Speech Synthesis provides an in-depth explanation of all aspects of current speech synthesis technology, and is designed for graduate students in electrical engineering, computer science, and linguistics.
Journal ArticleDOI
The chirp z-transform algorithm and its application
TL;DR: Applications discussed include: enhancement of poles in spectral analysis, high resolution narrow-band frequency analysis, interpolation of band-limited waveforms, and the conversion of a base 2 fast Fourier transform program into an arbitrary radix fast Fouriers transform program.
Journal ArticleDOI
Combined DWT-DCT Digital Image Watermarking
TL;DR: An imperceptible and a robust combined DWT-DCT digital image watermarking algorithm that watermarks a given digital image using a combination of the Discrete Wavelet Transform (DWT) and thediscrete Cosine transform (DCT).
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