modified symmetric discrete cosine transform

... algorithm for the discrete cosine transform, ” IEEE Transactions on Communications, vol 25, no 9, pp 1004–1009, 1977 [2] H S Hou, “A fast recursive algorithm for computing the discrete cosine transform, ” ... application to compute pruning discrete cosine transform, ” IEEE Transactions on Signal Processing, vol 48, no 2, pp 561–563, 2000 [20] A N Skodras, “Fast discrete cosine transform pruning,” IEEE Transactions ... Winograd, “Fast algorithms for the discrete cosine transform, ” IEEE Transactions on Signal Processing, vol 40, no 9, pp 2174–2193, 1992 [7] J Makhoul, “A fast cosine transform in one and two dimensions,”...

Ngày tải lên: 21/06/2014, 22:20

... Proceedings of the IEEE, vol 93, no 1, pp 6–17, 2005 [2] N I Cho and S K Mitra, “Warped discrete cosine transform and its application in image compression,” IEEE Transactions on Circuits and Systems ... filter bank in the form of Fk A(z) = U(k) cos n=0 (2n + 1)kπ n A(z) , 16 k = 0, , inverse discrete Fourier transform (IDFT) The second approach is noted to provide a slightly better performance ... bpp in the first place The downsampling process reduces the total number of blocks that need to be transform coded and therefore significantly reduces the WDCT overhead per pixel For a downsampling...

Ngày tải lên: 22/06/2014, 20:20

... include: σx (5) where H is the forward transform matrix of the DCT transform and Rxx is the autocorrelation of the input signal The autocorrelation matrix Rxx is symmetric and Toeplitz The elements ... be determined Instead discrete Lagrange multipliers can be used [22] Fast discrete Lagrangian local searches have been developed [23, 24, 25] that can be used to solve this discrete constrained ... T W Fox and L E Turner, “Low coefficient complexity approximations of the one dimensional discrete cosine transform, ” in Proc IEEE Int Symp Circuits and Systems, vol 1, pp 285–288, Scottsdale, Ariz,...

Ngày tải lên: 23/06/2014, 00:20

... term: transform, is extensively used in Digital Signal Processing, such as: Fourier transform, Laplace transform, Z transform, Hilbert transform, Discrete Cosine transform, etc Just what is a transform? ... periodic Discrete Time Fourier Transform signals that are discrete and aperiodic Discrete Fourier Transform signals that are discrete and periodic FIGURE 8-2 Illustration of the four Fourier transforms ... Discrete Time Fourier Transform in a computer algorithm By elimination, the only Chapter 8- The Discrete Fourier Transform Type of Transform 145 Example Signal Fourier Transform signals that...

Ngày tải lên: 13/09/2012, 09:49

... the Haar transform was utilized by a NS lifting structure [7] The Walsh Hadamard transform was composed of a NS lossless transform [8], and applied to construct a lossless discrete cosine transform ... Systems Using Discrete Wavelet Transformation 207 Nader Namazi, Ray Burris, G Charmaine Gilbreath, Michele Suite and Kenneth Grant Preface Discrete Wavelet Transform (DWT) is a wavelet transform ... Discrete Wavelet Transform for Image Signals Masahiro Iwahashi and Hitoshi Kiya Chapter A Pyramid-Based Watermarking Technique for Digital Images Copyright Protection Using Discrete Wavelet Transforms...

Ngày tải lên: 23/03/2014, 03:20

... 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 signal x(·) ... This chapter introduces the Discrete Fourier Transform (DFT) and points out the elements which will be discussed in this reader 1.1 DFT Definition The Discrete Fourier Transform (DFT) of a signal ... representation of continuous-time signal reconstruction from discretetime samples is given DRAFT of “Mathematics of the Discrete Fourier Transform (DFT),” by J.O Smith, CCRMA, Stanford, Winter 2002...

Ngày tải lên: 31/03/2014, 15:21

... Now we focus on DT signals for a while The discrete Fourier transform or DFT is the transform that deals with a finite discrete- time signal and a finite or discrete number of frequencies Which frequencies? ... signals Discrete- time Fourier transform (DTFT) review Recall that for a general aperiodic signal x[n], the DTFT and its inverse is ∞ X (ω) = x[n] e−ωn , x[n] = n=−∞ 2π π −π X (ω) eωn dω Discrete- time ... whose DTFTs are known or are easily determined, we can simply multiply the two transforms and then “look up” the inverse transform to get the convolution What if we want to automate this procedure...

Ngày tải lên: 08/06/2014, 20:19

... “The discrete rotational Fourier transform, ” IEEE Transactions on Signal Processing, vol 44, no 4, pp 994–998, 1996 [6] C Candan, M A Kutay, and H M Ozaktas, “The discrete ¸ fractional Fourier transform, ” ... the discrete Fourier transform, ” IEEE Transactions on Acoustics, Speech, and Signal Processing, vol 30, no 1, pp 25– 31, 1982 [13] F A Gr¨ nbaum, “The eigenvectors of the discrete Fourier u transform: ... for bilinear transform and the forward difference method Solid: bilinear transform, dashed: forward difference method ⎤ respectively Hence, DFT commuting matrix inspired by the bilinear transform...

Ngày tải lên: 21/06/2014, 16:20

... doi:10.1002/mrm.1910340618 doi:10.1186/1687-1499-2012-3 Cite this article as: Mallat et al.: Discrete fourier transform- based TOA estimation in UWB systems EURASIP Journal on Wireless Communications ... = 2ν f νβs k 4π k k where ν is the global SNR given in (9) and 2 βs2 = k 4π ρSk fk2 / k ρSk the discrete mean quadratic bandwidth of s[k] Let τ ml be the time-domain MLE of τ τ ml is given by:...

Ngày tải lên: 21/06/2014, 17:20

... transform algorithm,” IEEE Transactions on Signal Processing, vol 44, no 8, pp 2121–2126, 1996 [11] G Panneerselvam, P Graumann, and L Turner, “Implementation of fast Fourier transforms and discrete ... complete transform, we need a length N linear convolution and 2N complex multiplications The advantage, compared with the Rader algorithms, is that there is no restriction to primes in the transform ... that the DFTs with a maximum transform length are connected through an extra solid line Due to coefficient redundancy explored in the CZT design, we see that some longer transform lengths may have...

Ngày tải lên: 22/06/2014, 23:20

... called the jth beam sum In its discrete form, the Radon transform can therefore be expressed as follows: Ψ w i j Ii , jth beam Figure 4: Discrete model for the Radon transform with wi j ≈ 0.9 0◦ ... local features Global features describe an entire signature and include the discrete Wavelet transform [7], the Hough transform [8], horizontal and vertical projections [9], and smoothness features ... FRR and FAR of 3% and 9.8%, respectively is obtained Kaewkongka [8] uses the Hough transform (general Radon transform) to extract the parameterised Hough space from a signature skeleton as a...

Ngày tải lên: 23/06/2014, 01:20

... Chapter A Scalable Architecture for Discrete Wavelet Transform on FPGA-Based System Xun Zhang 25 Chapter VLSI Architectures of Lifting-Based Discrete Wavelet Transform 41 Sayed Ahmad Salehi and ... System in the Discrete Wavelet Transform Domain 179 Clara Cruz Ramos, Rogelio Reyes Reyes, Mariko Nakano Miyatake and Héctor Manuel Pérez Meana Chapter 12 Application of Discrete Wavelet Transform ... Watermarking 197 Corina Nafornita and Alexandru Isar Part Discrete Wavelet Transform Algorithms 219 Chapter 13 Shift Invariant Discrete Wavelet Transforms Hannu Olkkonen and Juuso T Olkkonen 221 Chapter...

Ngày tải lên: 28/06/2014, 14:20

... Biomedical Applications 141 ECG Signal Compression Using Discrete Wavelet Transform Mohammed Abo-Zahhad 143 Shift Invariant Biorthogonal Discrete Wavelet Transform for EEG Signal Analysis 169 Juuso T Olkkonen ... Industrial Applications 213 Discrete Wavelet Transforms for Synchronization of Power Converters Connected to Electrical Grids Alberto Pigazo and Víctor M Moreno Discrete Wavelet Transform Based Wireless ... is to transform (DWT), of non-stationary fractal processing, based mainly on the discrete wavelet present our experience with the wavelet time-series based mainly on the discrete wavelet transform...

Ngày tải lên: 29/06/2014, 13:20

... Levels Of Discrete Wavelet Transform, Visual Information Engineering, International Conference on Page(s):294 – 297, VIE (2003) [8] Lee A Ray and Reza R Adhami, Dual Tree Discrete Wavelet Transform ... [6] William F Herrington, Jr BerthoId K.P Horn, and Lchiro Masaki, Application of the Discrete Haar Wavelet Transform to Image Fusion for Nighttime Driving, Proceedings of Intelligent Vehicles ... Hill P.R., Bull D.R., and Canagarajah C.N., Image Fusion Using A New Framework For Complex Wavelet Transforms, Image Processing, IEEE International Conference, (2005) [4] Gema Piella Fenoy, Adaptive...

Ngày tải lên: 22/07/2014, 02:21

... DCT - Discrete Cosin Transform Quantization IDCT – Inverse Discrete Cosin Transform DCT - Discrete Cosin Transform DCT -cont DCT-cont Quantization - Lượng tử IDCT - Inverser Discrete Cosin Transform...

Ngày tải lên: 19/10/2014, 23:17

... autocorrelation of the signal σx = Discrete Wavelet Transforms - Biomedical Wavelet Transforms Discrete Applications Discrete Wavelet Transform in biomedical research Wavelet Transform has been proposed ... biomedical compression based on Discrete Wavelet Transform (DWT) and Run Length encoding (Ballesteros et al., 2010) 4.1 Model of Discrete Wavelet Transform The Discrete Wavelet Transform is composes by ... 17 Application of Discrete Wavelet Transform for Differential Protection of Power Transformers 349 Mario Orlando Oliveira and Arturo Suman Bretas Preface The discrete wavelet transform (DWT) has...

Ngày tải lên: 10/04/2015, 17:29

... (IFDMA) and Discrete Fourier Transform- Spread Orthogonal Frequency Division Multiplexing (DFT-SOFDM) [30, 32] The Third Generation Partnership Project (3GPP) has proposed Discrete Fourier Transform- Spread ... bandwidth and high transmission bit rates Chapter Discrete Fourier Transform Spread OFDM (DFT-SOFDM) Systems 35 In DFT-SOFDM, DFT is utilized to transform time domain data symbol to frequency domain ... following Chapter Discrete Fourier Transform Spread OFDM (DFT-SOFDM) Systems 37 expression: X(k) = [X (k) (0) X (k) (1) · · · X (k) (KM − 1)]T (3.7) After KM-points IFFT operation, we transform X(k)...

Ngày tải lên: 10/11/2015, 11:00

... tiếng sử dụng nhiều xử lý ảnh Trong báo sử dụng moment biến đổi Polar Cosine[ 12] cho việc rút trích đặc trưng 3.1 Polar Cosine Transform (PCT) Cho ảnh 2D f(x,y), ta chuyển đổi từ hệ tọa độ đề đến ... tiễn cao Trong phạm vi nghiên cứu đề tài này, tìm hiểu, thử nghiệm đề xuất mô hình dùng Polar Cosine Transform (PCT) rút trích đặc trưng khuôn mặt mạng Radial Basis Function (RBF) để nhận dạng ... 3.1674 TSR(%) 96.92 Kết luận Trong báo đề xuất phương pháp rút trích đặc trưng dùng biến đổi Polar Cosine khả bất biến, bị ảnh hưởng nhiểu mạng nơ ron RBF để phân lớp thu kết tốt Ở bước tiền xử lý...

Ngày tải lên: 20/12/2015, 05:48