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Design of New Optimized Architecture Processor for DWT
Real-Time Imaging, 2000Summary: This paper presents a VLSI implementation of One Dimensional Direct Discrete Wavelet transform (1-D DWT). The DDWT can be viewed as a multi-resolution decomposition of a signal. This means that it decomposes a signal into its components in different frequency bands (octave bands). We propose a new architecture using parallel filters.
Souani, C. +4 more
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A Robust Multiple Watermarking Scheme Based on the DWT
10th International Multi-Conferences on Systems, Signals & Devices 2013 (SSD13), 2013In this paper we make contributions to a non-blind multiple watermarking scheme that proceeds by embedding a binary image in the discrete wavelet transform bands of a gray scale image. Unlike the common wavelet based watermarking techniques, the proposed scheme lies essentially on marking the approximation and diagonal bands of the discrete wavelet ...
Ouazzane Hana +2 more
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2001
This chapter takes up the design of discrete wavelet transforms based on oversampled filter banks. In this case the wavelets form an overcomplete basis, or frame. In particular, we consider the design of systems that are analogous to Daubechies’ orthonormal wavelets — that is, the design of minimal length wavelet filters satisfying certain polynomial ...
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This chapter takes up the design of discrete wavelet transforms based on oversampled filter banks. In this case the wavelets form an overcomplete basis, or frame. In particular, we consider the design of systems that are analogous to Daubechies’ orthonormal wavelets — that is, the design of minimal length wavelet filters satisfying certain polynomial ...
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A New Watermarking Method Based on DWT
2005A new hiding scheme of digital image is introduced in this paper, which is robust to image processing such as JPEG compression, median filtering, adding Gauss noise, cropping, and histogram equalization. In this paper, we embed watermark into DWT domain, using integer modulo, retrieval of embedded watermark does not need original image.
Xiang-Chu Feng, Yongdong Yang
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Comparison of DWT, DWT-SWT, and DT-CWT for low resolution satellite images enhancement
2017 International Conference on Algorithms, Methodology, Models and Applications in Emerging Technologies (ICAMMAET), 2017In this research letter, a low resolution (LR) satellite image is enhanced to high resolution (HR) image using various wavelet techniques. One of the key factors is image resolution. Image RE is the method of modifying a portrait so that output portrait is more superior to the novel one for meticulous application. There are many techniques for portrait
M. HemaLatha +2 more
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2018
In this paper, the fault location and types of them are recognized and analyzed in the distributed system by using wavelet and feed-forward neural network and radial basis function neural network. When fault occurring in the system, the system behaviors are examined and signals are measured which can be seen as distorted waveforms.
T. C. Srinivasa Rao +2 more
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In this paper, the fault location and types of them are recognized and analyzed in the distributed system by using wavelet and feed-forward neural network and radial basis function neural network. When fault occurring in the system, the system behaviors are examined and signals are measured which can be seen as distorted waveforms.
T. C. Srinivasa Rao +2 more
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A parallel algorithm for DWT and GFT
Proceedings of TENCON '93. IEEE Region 10 International Conference on Computers, Communications and Automation, 2002Discrete W transform (DWT) proposed by Wang (1985) has been used in digital signal processing and other fields. Its fast algorithm has been studied extensively when the number of points is a power of 2, but we have still known little about its fast algorithm in other cases. In this paper, it is shown that a DWT of length N=N/sub 1/N/sub 2/ (N/sub 1/ is
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Comparative Study and Analysis of DWT-SPIHT with DWT-EZW Method for Image Compression
2023 7th International Conference on Trends in Electronics and Informatics (ICOEI), 2023Dikendra Verma +5 more
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Lossless DWT Transcoder Compatible with lossy DWT for 3D Image
IEICE Proceeding Series, 2016Suvit, Poomrittigul, Masahiro, Iwahashi
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Design and Embedded Implementation of Secure Image Encryption Scheme Using DWT and 2D-LASM
Entropy, 2022Heping Wen, Yiting Lin, Lin Yiting
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