applications of discrete wavelet transform ppt

... Noise Reduction with Wavelets 68 5.3.1 Wavelet Transform of a Noisy Audio Signal 68 5.3.2 Orthogonal Wavelet Transform and Thresholding 69 5.3.3 Nonorthogonal Wavelet Transform and Thresholding ... fundamentals of the wavelet theory: We discuss the time–frequency resolution of the wavelet transform and compare it to the common short–time Fourier transform The multiscaleproperty of the dyadic wavelet ... Its Applications 2001 [Sch01d] A historic overview of the development of the wavelet theory precedes the introduction of the (one–dimensional) continuous wavelet transform Here, the definition of

Ngày tải lên: 25/12/2013, 05:17

... of a measurement result cannot be determined, any result of a measure‐ment is only an approximation (or estimate) of the value of a measurand Thus, the com‐plete representation of the value of ... purpose of the evaluation is to es‐tablish any differences in the density of the branching points of the fibrin network related tothe activity of the clotting enzyme (thrombin), the concentration of ... the actual image of the fibrin for selection of theregion of interest (Fig 2c) With this, the preparations of the image are done, and the usercan start taking the desired number of measurements

Ngày tải lên: 16/03/2014, 12:20

... stationary discrete wavelet transform Stationary discrete wavelet transform Given a function x (t), its continuous wavelet transforma-tion, CWT (x) is obtained by applying a mother wavelet functionψ∗t ... using the Stationary Discrete Wavelet Transform) model is based on the stationary wavelet transforma-tion The k-mers of different lengths are extracted from the sequences and transformed into a ... The wavelet transform obtains the time information of the signal by translating the parent wavelet The fre-quency characteristics of the signal are obtained by scaling the width of the parent wavelet

Ngày tải lên: 25/11/2020, 15:44

... provides VLSI architechtures for Discrete Wavelet transform (DWT) These architechtures represente Mallat’s pyramid algorithm for the Wavelet Haar By implementing of the wavelet based structures with ... -1/2 1 Trang 14Wavelets có 03 loại hàm cơ sở Hiện nay, người ta quan tâm nhiều đến nghiên cứu 2 loại là wavelets trực chuẩn_orthonornal wavelets (như wavelets Haar, wavelets sinc, wavelet Daubechies ... NGÀNH KỸ THUẬT ĐIỆN TỬ LUẬN VĂN THẠC SĨ CẤU TRÚC VLSI CHO BIẾN ĐỔI WAVELET RỜI RẠC VLSI ARCHITECTURES FOR THE DISCRETE WAVELET TRANSFORM GVHD : TS LÊ TIẾN THƯỜNG HVTH : TRƯƠNG QUANG VINH TP HCM

Ngày tải lên: 16/04/2021, 04:24

... Systems Using Discrete Wavelet Transformation 207 Nader Namazi, Ray Burris, G Charmaine Gilbreath, Michele Suiteand Kenneth Grant Trang 7Discrete Wavelet Transform (DWT) is a wavelet transform that ... correlation of the Haar transform wasutilized by a NS lifting structure [7] The Walsh Hadamard transform was composed of a NSlossless transform [8], and applied to construct a lossless discrete cosine transform ... variants of the DWT have been suggested, each with varyingmodifications suited for specific state-of-the-art applications This book presents a succinctcompendium of some of the more recent variants of

Ngày tải lên: 23/03/2014, 03:20

... sinusoids from powers of z, and plot examples using Mathematica • The Discrete Fourier Transform (DFT) Derived This chapter derives the Discrete Fourier Transform (DFT) as a projection of a length N ... Euler’sformula, and an overview of numerical facilities for complex num-bers in Matlab and Mathematica factor-• Proof of Euler’s Identity This chapter outlines the proof of Euler’s Identity, which ... primitive M th root of unity We may also call W M the generator of the mathematical group consisting of the M th roots of unity and their products We will learn later that the N th roots of unity are

Ngày tải lên: 31/03/2014, 15:21

... and turnover of blood cells and immune system The high rate of regeneration of the liver, as compared to other tissues such as brain tissue, is due to prolifera-tion of two types of liver cells, ... in implantation of hepatic stem cells, or in implantation of hepatic cells obtained by differentia-tion of a different type of stem cell, such as mesenchy-mal stem cells Other applications, still ... in vitro, which offers a great potential in cell therapy for a very wide variety of liver diseases Histocompatible stem cell therapy Since one of the most important applications of cell therapy

Ngày tải lên: 18/06/2014, 16:20

... index of the numbers of soft bit value depending on the modulation scheme; k is the index into the 100 data subcarriers in an OFDM symbol Demapper Soft Bit ChannelEstimator Trang 24.2.2 Soft ... for TFC=1, BG=1 To avoid the cost of this CSI aided Viterbi decoder, the soft input of the decoding chain is obtained from the multiplication of the demodulation soft output R m and its corresponding ... imaginary part as a group of 4 soft bits, as described in (21)-(24) However, demapping performance can remain the same without using the factor of 10/5 The group of 4 soft bits applying two CSI

Ngày tải lên: 19/06/2014, 14:20

... Bit-Error-Rate (BER), for communication purposes and, in thecase of IR-UWB for ranging applications, to the estimation of the Time-of-Flight (ToF).The UWB channel is statistical, therefore determining ... environment,i.e indoor office, residential, industrial, outdoor, open outdoor, and for Line-Of-Sight (LOS) or Non Line-Of-Sight (NLOS) links IEE (2004) Also, the computation of ToF with TWRschemes ... of this block requires the definition of the complete packetexchange mechanism as well as detailed information on each single block of the receiver Trang 6Therefore, the complete development of

Ngày tải lên: 19/06/2014, 14:20

... 2004; Porcino & Hirt, 2003) One of the ‘killer’ applications of high-speed WPAN is wireless video area network (WVAN) that offers wireless transmission of high-definition videos (several Gbps) ... July 2008 by a group of international companies The main duties of the consortium include the development of the specification and compliance testing process, management of the certification ... have discussed the problem of UWB system performance in single-user and multi-user environments While there is a rich body of literature addressing this problem most of which has emerged recently,

Ngày tải lên: 19/06/2014, 14:20

... a radius of50mm and thickness of 2mm as the skin layer A spherical tumor with a radius of 2mm isplaced on the central axis of the hemisphere and at a height of 35mm from the center of thehemisphere ... signal of a UWB pulse is the summation of someharmonic terms The number of these terms depend on the number of scattering points andthe multiple scattering effect Each harmonic term consists of a ... frequency-independent equivalent circuit model of antenna pairs is provided in order to facilitate the design of the RF front-end of ground-penetrating radars by means of suitable software CAD tools The procedure

Ngày tải lên: 19/06/2014, 15:20

... sequence of qubits A single qubit is represented by 0 , 1 or crucially any quantum superposition of these states The quantum superposition of these orthogonal states is defined by The squares of the ... states Pair of qubits can be in any quantum superposition of 4 Trang 2(=22) states and three qubits in any superposition of 8 (=23) states etc While, for the classical computer one of these states ... computer one of these states has the probability of “1”, for the quantum computer, the sum of the probabilities of these states equals to “1” In this point of view, quantum superposition allows a particle

Ngày tải lên: 19/06/2014, 19:20

... long-awaited payoffs in a number of application areas The inherent advantages and potential payoffs of the THz regime for military & security as well as industry relevant applications have ... arguably most closely linked to the potential payoffs of THz sensing and imaging for an array of military, security and industrial applications These applications include the spectroscopic-based ... experimental feasibility of this new class of devices in the THz-region Also, photo-sensitivity of these new classes of devices will be included in the chapter 2 Importance of SiC as a base semiconductor

Ngày tải lên: 20/06/2014, 04:20

... 7Fundamentals of biomedical applications of biomorphic SiCMahboobeh Mahmoodi and Lida Ghazanfari X Fundamentals of biomedical applications of biomorphic SiC 1Material Group, Faculty of Engineering, ... clinical applications of SiC, there is a void for a monograph that provides a unified synthesis of this subject The main objective of this chapter is to provide a basic knowledge of the biomedical applications ... porosity of these materials make them great candidates for biomedical applications 3 Biomedical applications of SiC Silicon carbides are emerging as an important class of materials for a variety of

Ngày tải lên: 20/06/2014, 04:20

... amount of oxygen content is enough to form much more rare-earth silicon-oxynitrides as shown below: For the examples of La-siliconoxynitrides, one mole of oxygen can cause formation of 2 moles of ... amount of oxygen content is enough to form much more rare-earth silicon-oxynitrides as shown below: For the examples of La-siliconoxynitrides, one mole of oxygen can cause formation of 2 moles of ... cause strength degradation of the material at high temperature The investigation of phase relations in this quaternary system will be a summary of work from studies of Si-N-O-R(ANNA E McHale (1994))

Ngày tải lên: 20/06/2014, 04:20

... levels of feed rate  Examination of the influence of number of passes on jet footprint generation: To understand the influence of number of passes on erosion depth, the contribution of preceding ... levels of feed rate  Examination of the influence of number of passes on jet footprint generation: To understand the influence of number of passes on erosion depth, the contribution of preceding ... of focusing nozzle diameter to orifice diameter of 3-4 for optimum performance (Chalmers, 1991), a d f of 1.06 mm and d o of 0.3 mm were employed Garnet abrasive of 80 mesh size with an m f of

Ngày tải lên: 20/06/2014, 04:20

... regular matrix Each column of H μ α−1 is essentially a scalar multiple of1.5, so it is obvious that each Trang 7column ofH μ α−1belongs to the convergence domain of A However, it will be ... Proof. Lemma 2.1appears as formula 12 on page 138 of12 Lemma 2.2 For m, n integers n > m 1 > a, x α n as in1.5, n  km 1 1 x α k k − a  1 a α 1 x α m − 1 x α n Proof UsingLemma ... have the convenience of regularity, we will use the sequence μ α n  n − a −a αn 1 α , 1.6 since the constant−1/a α does not affect the size of the convergence domain of H μ α Trang 32

Ngày tải lên: 21/06/2014, 04:20

... properties of wavelet transforms of both the signal and its normalized 2 3 4 5 6 n (τ) Continuous Haar wavelet transform of FSK16 signal (a) n (τ) 1 2 1.5 2.5 Continuous Haar wavelet transform of normalised ... Continuous Haar wavelet transform of ASK16 signal (a) 0.5 1.5 2.5 1 2 n (τ) Continuous Haar wavelet transform of normalised ASK16 signal (b) Figure 2: Multi-step wavelet transform of ASK16 signal ... Continuous Haar wavelet transform of PSK16 signal (a) 0.5 1.5 2.5 1 2 n (τ) Continuous Haar wavelet transform of normalised PSK16 signal (b) Figure 3: Constant wavelet transform of PSK16 signal

Ngày tải lên: 21/06/2014, 16:20

... have conducted a study of the software and hardware needs of the 3D wavelet transform [14] They have centered their study on the classic wavelet transform and conducted a set of trials on an SGI ... computation of various signal processing transforms, such as the FFT, DCT, and wavelet transforms Some efforts have focused on special architectures for the fast computation of some of these transforms ... grouping of a larger number of frames in a GOF allows to capture most temporal redundancies and increase the coding efficiency After carrying out the temporal decomposition over a GOF, a 2D wavelet transform

Ngày tải lên: 22/06/2014, 19:20

... 0.6 y Ti e(s ) (b) Figure 3: (a) FFT analysis of the first 600 ms of “ka”; (b) FFT analysis of the second 600 ms of “ka.” memory access The data flow of the CBT is derived from (11) As depicted ... Brown, “Calculation of a constant Q spectral transform,” Journal of the Acoustical Society of America, vol 89, no 1, pp. 425–434, 1991 [15] L Rabiner and B Juang, Fundamentals of Speech Recognition, ... transform (CQT) method, and (iv) wavelet packet transform (WPT) method The direct implementation of the critical-band fil-terbank provides good results in the application of speech recognition [4] In

Ngày tải lên: 22/06/2014, 19:20