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DWT-DCT-SVD based watermarking
2008 3rd International Conference on Communication Systems Software and Middleware and Workshops (COMSWARE '08), 2008Some works are reported in the frequency domain watermarking using Single Value Decomposition (SVD). The two most commonly used methods are based on DCT-SVD and DWT-SVD. The commonly present disadvantages in traditional watermarking techniques such as inability to withstand attacks are absent in SVD based algorithms.
K. A. Navas +4 more
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On image compression: a DWT-DCT algorithm
Proceedings of the Sixth International Symposium on Signal Processing and its Applications (Cat.No.01EX467), 2002We propose a hybrid transform that performs one-level wavelet decomposition of any image and follows it with a discrete cosine transform (DCT) in its lowpass sub-band. It shows a definite improvement over the DCT-based JPEG coder performance, in that it allows for a wider range of compression ratios (CR) over which the coder PSNR performance is good ...
How Sun Dee, Varun Jeoti
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A DWT-based image watermarking algorithm
IEEE International Conference on Multimedia and Expo, 2001. ICME 2001., 2001In this paper, a new embedding strategy for DWT-based watermarking is proposed. Different from the existing watermarking schemes in which low frequency coefficients are explicitly excluded from watermark embedding, we claim that watermarks should be embedded in the low frequency subband firstly, and the remains should be embedded in high frequency ...
Daren Huang +3 more
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DWT based Multimedia Compression
2021 2nd International Conference for Emerging Technology (INCET), 2021Current multimedia compression methods utilize techniques which are computationally resource intensive. Despite using high resources, presence of noise content is significant. To limit the unnecessary components, developing a different method which consumes comparatively lesser resources is essential.
B Rajeshwari +2 more
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An Efficient Implementation of a 2D DWT on FPGA
2007 International Conference on Field Programmable Logic and Applications, 2007This paper presents a high-speed implementation of a 2-D fixed-point discrete wavelet transform (DWT) using the embedded DSP48 blocks available on a Xilinx Virtex-4 XC4VLX15-10 FPGA. The full transform uses just 10 DSP48 blocks, 3 block RAMs and 2,126 logic elements when synthesized using Xilinx ISE Version 8.2i and can perform calculations at 197.2 ...
Michael Wisdom, Peter Lee 0002
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Watermarking with the UPC and DWT
2010Advancements in digital technologies offer new and easier methods in which consumers can purchase and enjoy creative content, for example, by downloading and viewing movies on a notebook computer. These advancements enable those who wish to profit from digital media that they did not author and do not own to illegally profit from the efforts of others.
Evelyn Brannock, Michael Weeks
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SELF RECOVERY AUTHENTICATION OF IMAGES IN THE DWT DOMAIN
International Journal of Image and Graphics, 2005The interest for multimedia contents authentication has recently increased. In particular watermarking-based authentication schemes seem to be offering some advantages with respect to classical cryptography tools (e.g. real content authentication, localization of manipulations, storage format independence, transparency to common signal processing, etc.
PIVA, ALESSANDRO +2 more
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An Efficient Architecture for a Lifted 2D Biorthogonal DWT
Journal of VLSI signal processing systems for signal, image and video technology, 2005zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Mehboob Alam +3 more
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DWT-Based Segmentation Method for Coronary Arteries
Journal of Medical Systems, 2014This work presents a new method for segmenting coronary arteries automatically in computed tomography angiography (CTA) data sets. The method automatically isolates heart and coronary arteries from surrounding structures and search for the probable location of coronary arteries by 3D region growing.
Shuo-Tsung Chen +6 more
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ACM Transactions on Embedded Computing Systems, 2012
Many modern computing applications have been enabled through the use of real-time multimedia processing. While several hardware architectures have been proposed in the research literature to support such primitives, these fail to address applications whose performance and resource requirements have a dynamic aspect.
Amit Pande, Joseph Zambreno
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Many modern computing applications have been enabled through the use of real-time multimedia processing. While several hardware architectures have been proposed in the research literature to support such primitives, these fail to address applications whose performance and resource requirements have a dynamic aspect.
Amit Pande, Joseph Zambreno
openaire +2 more sources