of the discrete wavelet transform

... flexibility The thesis provides VLSI architechtures for Discrete Wavelet transform (DWT) These architechtures represente Mallat’s pyramid algorithm for the Wavelet Haar By implementing of the wavelet ... -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

... projection The accuracy of the DRT is determined byΘ (the number of angles),β (the number of beams per angle), and the accuracy of the interpolation method Note that the continuous form of the Radon transform ... ratio of the number of genuine test signatures rejected to the total number of genuine test sig-natures submitted The FAR is the ratio of the number of forgeries accepted to the total number of forgeries ... Only the name of the writer was supplied to the forgers and they did not have access to the writer’s signatures The skilled forgeries were then ob-tained from the same group of forgers They were

Ngày tải lên: 23/06/2014, 01:20

... Regions of Two Images In this step, we need to determine the disparity of two images, and then find out the common regions of the same view. Since the camera system is set specially, there is ... that each is a set of data. Then, these two set of data are combined to form a new better set of data. In practice, there are many factors affecting the quality of images. Therefore, multi-resolution ... images. Now the quantity of synthesized image can be evaluated via standard deviation σ of histogram. The smaller the standard deviation is, the better the image is. Fig. 10 shows the comparison

Ngày tải lên: 22/07/2014, 02:21

... measure of the width of the ancestral blocks There are several advantages to the wavelet transform approach First, wavelet transform of the discrete signal is lossless, and describes the data ... the average of g Note that the level l of a wavelet is defined as the logarithm base 1/2 of the halfperiod p of the wave, where period is measured as a fraction of the length of the entire signal: ... shifted by the logarithm base 1/2 of the physical length of the signal Wavelet transform of the discrete signal is lossless [22], and the original signal could be recovered from its wavelet coefficients

Ngày tải lên: 09/08/2014, 22:23

... analy-sis 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 ... better the performance of the parent wavelet in time domain analysis Similarly, the smaller the width of the frequency domain window, the better the per-formance of the parent wavelet in frequency ... is transformed into a complex number as follows: • The sine of the angle the k-mer resides in becomes the real part of a complex number; • the cosine of the angle the k-mer resides in becomes the

Ngày tải lên: 25/11/2020, 15:44

... hiệu theo vị trí Do đó, việc áp dụng phép biến đổi wavelet liên tục để xử lý dữ liệu GPR là hoàn toàn hợp lý Sử dụng các hàm wavelet sẵn có trong Matlab như wavelet Harr, wavelet Daubechies hay wavelet ... nghiên cứu này, chúng tôi s ử dụng biến đổi wavelet liên tục (CWT – Continuous Wavelet Transform) và k ỹ thuật phân tích biên đa tỉ lệ với các hàm wavelet được chọn thích h ợp với hình dạng của ... đầu vào có dạng tương đồng với dạng của wavelet được chọn để phân tích Dữ liệu GPR theo một tuyến đo thì phức tạp và hầu như không giống với dạng của các wavelet sẵn có trong Matlab Tuy nhiên,

Ngày tải lên: 19/02/2023, 22:21

... the cardinality of the given approximation candidate setΦ and let N the cardinality of the input set X Then the number of possible achievable C-D pairs is N Q Therefore, com-putational cost of ... Linear Transform Approximations with Applications to the Discrete Cosine Transform Yinpeng Chen and Hari Sundaram The Katherine K Herberger College of the Arts and the Ira A Fulton School of Engineering, ... The speedup is just the ratio of the number of operations needed for the exact 2D DCT (544 operations) to the number of operations needed for the approximation Increasing the pruning resolution

Ngày tải lên: 21/06/2014, 22:20

... <r} and T  ∂D0, 1. The following result relates the values of Γ 1 t with the spectrum of the operator A. It will be essential in the proof of our characterization of well posedness for 1.2 ... troubles from round off errors. However, often the qualitative properties of the solutions of the difference equation are quite different from the solutions of the corresponding differential equations. ... translation of the proofs from the continuous time setting to the discrete time setting. Indeed, the former only allows to construct a solution on a possibly very short time interval, the global

Ngày tải lên: 22/06/2014, 11:20

... set to zero The higher improvement of the PSNR at the finest temporal resolution level is due to the fact that in this case, the loss of the packet influences only the reconstruction of the temporal ... receives, therefore, the coarser spatiotemporal resolution levels first and then, with the help of the spatiotemporal neighbors, can predict the finest resolution ones The conditional law of the coefficients ... Temp1 Temp2 Temp3 Figure 11: Improvement of the PSNR of the reconstructed GOF of the original sequence “foreman” when we lose the horizontal subbands of the second spatial resolution level at each

Ngày tải lên: 23/06/2014, 01:20

... Regarding the 3D wavelet transform, Kutil and Uhl 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 ... processed.N × N gives the size of the frames in pixels while the third parameter indicates the step number for the different levels of decomposition for the 3D-WT For the sake of clarity, in the figures, ... reduce the huge memory requirements when applying the 1D-WT over the temporal domain, we propose the use of the GOF-based scheme intro-duced inSection 2.3 According to the principles of operation of

Ngày tải lên: 22/06/2014, 19:20

... separation of these sources in the scalogram, getting easy detection of their depth After verifying the reliability of the proposed method on the theoretical models, a process for the location of the ... counted on the module component of the wavelet transform The edge detection technique was based on the locations of the maximum points of the CWT coefficients in the scalogram Accordingly, the edge ... gradient of the total gravity anomaly intensity, c) The module contours of the wavelet transform, d) The module contours of the wavelet transform as using scale normalization Trang 5According to the

Ngày tải lên: 29/10/2022, 08:05

... Consumers in the early stages of their careers and financial lives need the most help in managing their finances, and are seeking opportunities to educate themselves about money matters The Cisco ... customers trust banks to help them Despite challenges caused by the economic crisis, Gen Y and Gen X customers still trust their banks and want them to be their primary providers of advice – To be successful ... to address their needs using the tools they and their peers have adopted, including mobile devices, video, and social networking—and they are willing to switch to banks that embrace these technologies

Ngày tải lên: 29/03/2014, 08:20

... in the design of the study, carried out some of the literature searches, synthesized the findings and drafted the manuscript DB participated in the design of the study, carried out some of the ... introduces the basic principles of DCE methods, then the methodology of our literature review is described The main part of the paper describes the DCE studies we iden-tified and summarizes their ... in their birth region or the area where they studied However, the validity of these findings may be limited by the relatively small size of the subsamples used for each estimation and because the

Ngày tải lên: 18/06/2014, 17:20

... integers) (2) The contracted versions of the wavelet function will match the high-frequency components of the original signal and the dilated versions will match the low-frequency oscilla-tions Then by ... ) is the probability of the output class y j when the input is unknown, and P(y j |x i) is the probability of the output class y j when the input state x i is known For each subject, the wavelet ... was defined The bit i of the binary chromosome specified whether or not the fea-ture i was selected by the GA A value of "1" indicated the presence of feature i and a value of "0"

Ngày tải lên: 19/06/2014, 10:20

... condition for theboundedness of all solutions of (1.1) and the scalar case of (1.1), respectively The next result provides a sufficient condition for the boundedness of solutions of (1.1) Theorem 4.1 ... α(j) = 0, 0 ≤ j ≤ n Then the solution of (4.4) and (4.5) is bounded if and only if the condition (5.5) is satisfied. Proof. The proof is immediate consequence from proof of Theorem 4.3 with Remark ... moreover the boundedness and estimation of the solutions are founded by usingthe resolvent of the equations This article studies the boundedness of the solution of (1.1) under initial condition (1.2)

Ngày tải lên: 20/06/2014, 20:20

... resembles the sawtooth waveform With P < 5, the maximum of the waveform is closer to the beginning of oscillation period, and when P > 5, the maximum is closer to the end of the period ... havingf0=2.096 kHz In (b), the crosses indicate the magnitudes of the waveform harmonics, the circles represent the magnitudes of the frequency-scaled harmonics of the recorded sawtooth waveform ... using the estimated value of model parameterP In Figures5(a) and5(b), the waveform and the spectrum of the PD model are drawn, respectively, together with the waveform and the spectral envelope of

Ngày tải lên: 21/06/2014, 05:20

... method, and is explicitly solved using the z-transform method. The connection of the solution of the discrete equivalent logistic equation with the solution of the logistic differential equation is ... some differences of the discrete equivalent logistic equation and the well-known discrete analogue of the logistic equation are mentioned. It is hoped that this discrete equivalent of the logistic ... proposed by the Belgian mathematician Pierre-Franc¸ois Verhulst 1804–1849 in 1838, in order to describe the growth of a population Pt under the assumptions that the rate of growth of the population

Ngày tải lên: 21/06/2014, 11:20

... represents the rate of conversion of nutrients into the reproduction of the predator Further, τ is a positive integer For the simplicity and convenience of exposition, we introduce the following ... coefficient of the prey at time n, respectively d n, a22n denote the death rate and density-dependent coefficient of the predator at time n, respectively a12 n denotes the capturing rate of the predator; ... This completes the proof of Theorem3.1 In order to obtain the permanence of system1.3, we assume that H3 bn c1nu∗ 10n L > 0, where u∗10n is some positive solution of the following

Ngày tải lên: 21/06/2014, 11:20

... through a filter, the carrier wave is delayed by the phase delay of the filter, while the modulation signal is delayed by the group delay of the filter. In the case of additive synthesis, group delay ... generator of the mathematical group consisting of the Mth roots of unity and their products. We will learn later that the Nth roots of unity are used to generate all the sinusoids used by the DFT ... Thus, the sinusoidal motion cos(ωt) is the projection of the circular motion e jωt DRAFT of “Mathematics of the Discrete Fourier Transform (DFT),” by J.O. Smith, CCRMA, Stanford, Winter 2002. The...

Ngày tải lên: 31/03/2014, 15:21

... use of the work. Any republication, referencing or personal use of the work must explicitly identify the original source. Notice Statements and opinions expressed in the chapters are these of the ... technique. The technique con‐ sists of two stages: first stage is the pyramid transform and the second stage is the DWT. The watermark can be a logo image of size n×n pixels. If x 0 (n 1 ,n 2 ) was the ... values with two of the attacks. These attacks are the median filter and the JPEG compression. However, for the additive noise and the histogram equalization, it gives approximately the same average...

Ngày tải lên: 23/03/2014, 03:20