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A High-Speed Computational Pipeline Single MAC-Based VLSI Architecture for Real-Time signal and image processing

A High-Speed Computational Pipeline Single MAC-Based VLSI Ar...

引用

Advances in Electrical, Computing, Communication and Sustainable Technologies (ICAECT), International conference on

作者： Dhandapani Vaithiyanathan Britto Pari James Karuthapandian Mariammal National Institute of Technology Delhi Delhi India Vel Tech Rangarajan Dr. Sagunthala R&D Institute of Science and Technology Chennai India Madras Institute of Technology Anna University Chennai India

VLSI architectures play a vital role in most real-time applications because of their optimal performance. In this work, a single MAC (Multiply-Accumulate) based pipelined architecture is proposed for faster computation of the one-dimension (1-D) discrete wavelet transform (DWT). The main objective of this work is to reduce computational complexity by utilizing resource sharing and to enhance the speed of operation by employing a pipelining scheme. The designed single MAC-based architecture for computing DWT is suitable for infrasound data processing which employs a high-pass filter (HPF) and low-pass filter (LPF). The architecture efficiently implements a resource-sharing scheme by adopting only these two filters. In addition, in this realization, pipelining is utilized to achieve high-speed computation of DWT. Further, this design makes use of common elements several times which provide a convenient and suitable implementation. The proposed structure is coded using Verilog and implemented in FPGA (Field Programmable Gate Array) hardware with the Xilinx platform. Intending easily transported and real-time utilization, this architecture is realized using Xilinx Virtex-5 series FPGA. The area of the proposed architecture is reduced by about 44.8% when examining conventional parallel MAC architecture. Likewise, this pipelined design offers power conservation of about 31.97% over the parallel design. Further, the proposed architecture offers an operating speed of 276MHz with a power conservation of 200mW at 276MHz clock frequency.

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Analysis of Multispectral image Using Discrete wavelet Transform

Analysis of Multispectral Image Using Discrete Wavelet Trans...

引用

International conference on Advanced Computing and Communication Technologies

作者： Hari Kumar Singh S. K. Tomar Pooja Singh Department of Electronics and Communication Engineering IETM.J.P Rohilkhand University R. B. M. I. Group of Institution

ISBN: (纸本)9781467359658

In this paper we have analyzed the discrete wavelet transform of multispectral image of Bareilly region using MatLab tool. The wavelet transform is one of the most useful computational tools for a variety of signal and image processing applications. The wavelet transform is used for the compression of digital image because smaller data are important for storing images using less memory and for transmitting images faster and more reliably. wavelet transforms are useful for images to reduce unwanted noise and blurring. A discrete wavelet transform (DWT) is any wavelet transform for which the wavelets are discretely sampled. A key advantage it has over Fourier transforms is temporal resolution: it captures both frequency and time domain information.

关键词： wavelet wavelet Transform DWT Compression Techniques

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Recognition of Hybrid Digital Watermarking Techniques using Digital image processing using Deep Learning Techniques

Recognition of Hybrid Digital Watermarking Techniques using ...

引用

Augmented Intelligence and Sustainable Systems (ICAISS), International conference on

作者： Chilumala Indira RM Noorullah Praveen Kumar Balguri Sowjanya Krishna Pinisetty Department of Computer Science and Engineering Institute of Aeronautical Engineerring Dundigal Hyderabad India Department of Aeronautical Engineering Institute of Aeronautical Engineerring Dundigal Hyderabad India Institute of Fundamental and Frontier Science University of Electronic Science and Technology of China Chengdu China

Digital watermarking is the procedure to identify the source and creator of the data. This is a form of digital media marker such as video, audio or image format. It helps to protect the data from various external unauthorized access. This is done through embedded digital information in the carrier signal to identify ownership and copyright protection. Security and privacy concerns need to be improved due to the rapid increase in the transmission and receiving of digital data. Various sectors such as the navy, military, intelligence, and police are sending and receiving numerous data through online mode. The existing system utilizes Arnold map with QWT-DCT techniques which are unable to obtain invisibility in attack detection. To overcome the limitations of the existing system the proposed system is implemented. They are highly confidential and need to be secured and protected thus hybrid digital watermarking techniques such as nested forms of watermarking are employed. If the third parties tend to make any modification, then it is termed as an attack. The removal of digital watermarking by third parties through certain modifications are denoted through copyright protection application. For security applications and to avoid various types of attacks, Discrete wavelet Transform (DWT) and Non-sampled Contourlet Transform (NSCT) are employed. Security and privacy is obtained through the Quaternion Fourier Transform (QFT) based algorithm with human speech recognition. The pixel displacement with pixel encryption is enhanced to save the privacy of images. Digital watermarking requires security, robustness, watermarking keys and computational cost parameter. Thus to protect the data by neglecting various conventional attacks, digital watermarking techniques are implemented through deep convolutional neural networks.

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Removal of Gaussian Noise from Stationary image using Shift Invariant wavelet Transform

Removal of Gaussian Noise from Stationary Image using Shift ...

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International conference on Wireless and Optical Communications Networks

作者： Vikas Gupta Rajesh Mahle Ashish Shukla H.O.D. of ECE Dept. TIT Rajiv Gandhi Technical University Bhopal M.P. India ECE Dept. TIT Rajiv Gandhi Technical University Bhopal M.P. India

ISBN: (纸本)9781467359986

Discrete wavelet transform (DWT) has gained widespread recognition and popularity in image processing due to its ability of capturing energy of signal in a few energy transform value. As well as it has also ability to underline and represent time-varying spectral properties of many transient and other nonstationary signals. In DWT denoising is done only in detail coefficient, this offer advantage of smoothness and adaption. However DWT has a lack of shift invariance. This shift-variance is a major problem with the use of DWT for transient signal analysis and pattern recognition applications. Denoising of images with the DWT some time also give visual artifacts due to Gibbs phenomena in neighbourhood of discontinuities. In this paper, a shift-invariant analysis scheme is proposed for removing of additive Gaussian noise in stationary image. An investigation has been made on discrete wavelet transform with shift invariant in terms of PSNR and visual performance.

关键词： PSNR (Peak signal to noise ratio) DWT (Discrete wavelet transform) ε- Decimated Discrete wavelet Transform (ε- Decimated DWT) Shift Invariant wavelet transform

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Content Based image Retrieval by Combining Feature Vector

Content Based Image Retrieval by Combining Feature Vector

引用

International conference on Wireless Communications, signal processing and Networking

作者： S. D. Ruikar Rohit S. Kabade Electronics Engg Dept. Walchand College of Engineering Sangli India Electronics & Comm. Engg Dept PVPIT Budhgaon Sangli India

ISBN: (纸本)9781467393393

This paper describes the searching problem of images stored in big databases i.e. content based image retrieval (CBIR) system. It represents the behaviour and proposes solution for it. In general vast deployment in various applications therefore the capacity of image database increases because it's needed efficient CBIR method. This paper uses the primary image features like colour, shape and texture. This primary features take out using various algorithms those are useful to obtain similarity check into images. It describes the result using MATLAB software application, with a large image database. It utilizes feature of colour, texture and shape of the database images for comparison purpose and further for obtaining of image and it including relevance.

关键词： Color Shape Texture wavelet Etc

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Data Compression in Wireless Visual Sensor Networks using wavelets

Data Compression in Wireless Visual Sensor Networks using Wa...

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International conference on Wireless Communications, signal processing and Networking

作者： Shabir Ahmad Sofi Roohie Naaz Department of Information Technology National Institute of Technology Srinagar Hazratbal Kashmir India Department of Computer Science & Engineering National Institute of Technology Srinagar Hazratbal Kashmir India

ISBN: (纸本)9781467393393

Wireless Sensor Networking is a sensor information gathering technology that has a wide range of applications in numerous fields. However due to the fact that sensor nodes have limited battery and are deployed in remote and harsh environments, energy efficient and real time transmission of the information are still open challenges. Since in a wireless sensor network data transmission is the most power consuming task, so far most useful techniques for the purpose of energy efficient and real time transmissions are based on data compression, the majority of them are based on wavelet transform. This paper give performance analysis of different wavelets for energy efficient and real time image data transmission in application like environment monitoring using wireless visual sensor networks. The performance evaluation shows that Haar wavelet is better in terms of energy efficiency and transmission time.

关键词： Wireless Visual Sensor Network (WVSN) Discrete wavelet Transform (DWT) Skipped High-pass Sub-band (SHPS) Data Compression

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Digital watermarking scheme for image authentication

Digital watermarking scheme for image authentication

引用

International conference on Communication and signal processing

作者： Lakshmi Priya, C. V. Nelwin Raj, N. R. SreeChitraThirunal College of Engineering Thiruvananthapuram India

Digital image watermarking process is definite as to insert information of digital into digital signal. This is an efficient solution to avoid illegal copying of information from multimedia networks. Many watermarking algorithms have been developed and each of them has its own individuality because of its variety of applications. A new algorithm able to solve most of the practical issues of watermarking is designed. Watermarking alone is not sufficient to prevent the unauthorized manipulations of data unless a proper protection protocol is established. An efficient watermarking algorithm should satisfy an optimal trade-off between three factors such the capacity, robustness and imperceptibility. The proposed algorithm uses the advantage of singular value decomposition (SVD), discrete wavelet transform (DWT) and homomorphic filtering. Finally, the efficiency of the result is evaluated using various quality measurements and the watermarked image is encrypted to increase the security level.

关键词： Digital water marking DWT SVD Homomorphic filtering Encryption

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DESIGN OF EFFECTIVE LOW POWER image COMPRESSION ALGORITHM

DESIGN OF EFFECTIVE LOW POWER IMAGE COMPRESSION ALGORITHM

引用

International conference on Wireless Communications, signal processing and Networking

作者： G. Epshi V. Saravanan B. Venkatalakshmi Velammal Engineering College Chennai- 600066 India

ISBN: (纸本)9781467393393

For satellite communication, large amount of data storage and transmission are involved as the satellites send data all the time, all day. Storing all these data and analyzing them for various purposes is possible using small low cost memory devices only with the help of image compression. image compression is the process of removing the redundant information from the image and it can be stored to reduce the storage size, transmission bandwidth and time. image compression aims at removing duplication from the source image and is essential for applications such as transmission and storage in an efficient form. The objective of the work is to develop an efficient low power image compression algorithm which compress it with higher compression ratio in such a way that the output compressed image becomes compatible for satellite communication. The proposed system should own a light weight algorithm which has the characteristics of minimum power consumption, less compression time and should meet a higher compression ratio. To do image compression, quad tree fractal image compression and an adaptive fractal wavelet image compression algorithm are selected and their performance in terms of mean square error, ratio of compression and peak signal to noise ratio are evaluated.

关键词： Fractal Range block image compression Quad tree

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Glaucomatous image Classification using wavelet Transform

Glaucomatous Image Classification using Wavelet Transform

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International conference on Advanced Communication Control and Computing Technologies

作者： A.Rajan G.P.Ramesh J.Yuvaraj Department of ECE St. Peter's UniversityChennai India Department of ECE St. Peter's UniversityChennai India Shri Andal Alagar College of Engineering Mamandur India.

ISBN: (纸本)9781479939152

wavelet Transforms is a part of large community of mathematical function approximation method, they are being increasing and being deployed in image processing for segmentation, filtering, classification etc. This work is based on image classification with the use of single level Discrete wavelet Transform (DWT). wavelets have been employed in many applications of signal *** texture features within images are extracted for accurate and efficient Glaucoma Classification. Energy is distributed over the wavelet sub-bands to find these important texture features. The discriminatory potential of wavelet features obtained from the daubechies (db3), symlets (sym3), and reverse biorthogonal (rbio3.3, rbio3.5, and rbio3.7) wavelet filters. We propose a technique to extract energy features obtained using 2-D discrete wavelet transform. The energy features obtained from the detailed coefficients can be used to distinguish between normal and glaucomatous images with very high accuracy. The effectiveness is evaluated using K- NN classifier by taking 30 normal and glaucoma images, 15 images are used for training and 15 images for testing.

关键词： Biomedical optical imaging feature extraction glaucoma image texture wavelet transforms

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Research on Three Typical Methods of Infrared Weak Small Targets Background Suppression under Cloud Background

Research on Three Typical Methods of Infrared Weak Small Tar...

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2015 International conference on Materials Engineering and Information Technology applications(MEITA 2015)

作者： Zhongmin LI Guowei ZOU Lifei MEI School of Information Engineering Nanchang Hangkong University

ISBN: (纸本)9781510812055

Background suppression of weak small targets in infrared image is the key of image tracking and monitoring, especially under the cloud background. In the area of image signal processing, there are a lot of background suppression methods can be used to image filter by combining the characteristics of infrared image under the cloud background. In this paper, we introduce three typical background filter methods such as pulse median filter, multi-structural morphological filter and wavelet threshold method, realize them using MATLAB, and analyze their performances of background suppression of weak small targets in infrared image under the cloud background.

关键词： Background Suppression Infrared image Cloud Background

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