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(last 30 days) 		Comments Ratings
13 Nov 2009 Screenshot PaddedHilbert Computes the Hilbert transform of a vector after it has been padded to ameliorate end effects. Author: Nate Yoder hilbert envelope, end effects, hilbert transform 65 0
10 Nov 2009 Reaction Diffusion Transform- using One dimension Calculate 2 dimensional Matrix RDtransform using one- Dimensional formula given in the tech paper. Author: Chetan feature extraction te..., transform, reaction diffusion 47 2
  • 1.0
1.0 | 1 rating
09 Oct 2009 DIT Radix-2 FFT with Bit Reversal Decimation in Time Radix2 FFT algorithm by cooley and tuckey Author: Dinesh Bhati Manish Sharma decimation, fft, butterfly, dft, transform, bit resersal 51 0
06 Oct 2009 Screenshot PadSignal Pads a signal with portions of the signal itself to decrease end effects. Author: Nate Yoder hvt, free decay, hilbert envelope, hht, end effects, emd 47 0
05 Oct 2009 Screenshot A Guide to the FFT-2nd Edition Plus A guide to the use of the fft algorithm. Author: Daniele Disco spectral analysis, fast fourier transfor..., fft, signal processing 240 15
  • 4.3
4.3 | 20 ratings
02 Oct 2009 Why use fftshift(fft(fftshift(x))) in Matlab instead of fft(x)? Explain why we use fftshift(fft(fftshift(x))) in Matlab instead of fft(x) Author: Kan Wu fast fourier transfor..., signal processing 131 0
  • 5.0
5.0 | 1 rating
28 Sep 2009 Calibrated Spectral Analysis Simple Fourier Spectral Analysis of sound pressure time record using a calibrated with a calibration Author: Edward Zechmann fourier transform, sound pressure, spectral anslysis, sound, mi, spectral analysis 127 0
18 Sep 2009 Circle Detection To detect circle in a gray scale image. Author: Vineet circle, hough transform, very good, self_rating, image processing, mathematics 260 3
  • 3.5
3.5 | 2 ratings
06 Sep 2009 Distortionless Data Hiding Based on Integer Wavelet Transform Lossless data hiding using Integer Wavelet transform by Guorong Xuan. (Reversible Watermarking) Author: Asad Ali distortionless data h..., integer wavelet trans..., reversible watermarki..., guorong xuan 75 0
  • 3.0
3.0 | 1 rating
16 Aug 2009 Screenshot FFT filter - clean your signals and display results! Perform Fourier transform, filter in frequency domain, reconstruct the signal. Author: Shmuel Ben-Ezra filter, dft, data analysis, fft, fourier, transform 183 0
10 Aug 2009 Screenshot MGWT Identification of protein coding regions using the Modified Gabor-wavelet transform. Author: Jesus Mena identification, protein coding region, bioinformatics, digital signal proces..., fourier, transform 31 0
20 Jul 2009 Screenshot Surrogate time series and fields Algorithms to calculate 1D, 2D and 3D fields with your specified power spectrum and distribution. Author: V. Venema fourier transform, iterative, surrogates, iaaft, stochastic modeling, amplitude 28 1
  • 4.0
4.0 | 1 rating
02 Jul 2009 dataview.m Sparse and possibly normalized representation of a dataset Author: Peter Cotton relational, data import, statistics, relational database, data export, dataset 10 0
01 Jul 2009 Screenshot Trans Camera View This .m function transforms camera captured image to planner plane using perspective transformation. Author: Nobuhito Mori perspective transform..., image registration, geometric transformat... 37 3
  • 2.66667
2.7 | 3 ratings
27 Jun 2009 Screenshot Toolbox signal Signal processing related functions. Author: Gabriel Peyre fft, cosine transform, dsp, image processing, signal processing 202 1
  • 4.0
4.0 | 2 ratings
16 Jun 2009 DICOM gantry tilt correction Checks for gantry tilt in DICOM fileset and modifies the images Author: Phil Lewis matrix, shear, image, translate, dicom, transform 24 0
12 Jun 2009 BlockShrink denoising BlockShrink code package Author: Dengwen Zhou filtering, block, shrink, image denoising, wavelet transform, sure 49 0
29 May 2009 Transform matrix between two dicom image coordinates This code calculates the transform matrix between two image coordinates. Author: Alper Yaman image coordinates, dicom, transform matrix, patient coordinates, mri, image processing 29 0
22 May 2009 Screenshot Multidimensional Discrete Cosine Transform (DCT) Fast forward and inverse Multidimensional Discrete Cosine Transforms (DCT, IDCT). Author: Andriy Myronenko discrete cosine trans..., inverse discrete cosi..., dct, self_rating, idct 73 7
  • 4.0
4.0 | 4 ratings
16 Apr 2009 Screenshot Resampling volume or image with affine matrix Use affine matrix to convert 3D vol or 2D img to orthogonal one with corresponding affine matrix. Author: Jimmy Shen affine, 2d, image, 3d, transform, voxel 97 5
  • 4.66667
4.7 | 3 ratings
10 Mar 2009 Screenshot Laplacian Smoothing Transform (LST) for Face Recognition LST code in matlab. Author: Suicheng Gu feature extraction, frequency transform, dimensional reduction, face recognition 78 0
04 Mar 2009 Screenshot Hankel Transform Routine to perform a QDHT with no limit on data size or transform order (other than memory constrain Author: Adam Wyatt physics, qdht bessel quasi dis..., chemistry 115 1
  • 4.0
4.0 | 1 rating
30 Jan 2009 Faster 3D Walsh - Hadamard Transform (sequency, natural) Implements a 3D Walsh Hadamard transform. This function is FAST! Author: Andre 3d transform, hadamard, transform, sequency ordering, walsh, natural ordering 14 0
07 Jan 2009 Screenshot Detects multiple disks (coins) in an image using Hough Transform HOUGHCIRCLES detects multiple disks (coins) in an image using Hough Transform. Author: Yuan-Liang Tang hough transform, circles, image processing 110 9
  • 4.8
4.8 | 5 ratings
15 Dec 2008 Screenshot Circular Hough Trasform in Polar Domain Detects center (xc, yc) and radius R of circle in an image in the polar domain. Author: Prakash Manandhar pattern recognition, hough transform, circle detection, image processing 50 0
20 Aug 2008 Circular convolution using DCT and DST circular convolution using Discrete sine and cosine transforms Author: Reju VG discrete cosine trans..., convolution, dsp, discrete sine transfo... 32 0
01 Aug 2008 Screenshot Stationary phase approximation for performing Fourier Transforms Performs a Fourier Transform of a function using the stationary phase approximation Author: Adam Wyatt fourier transform, integration, stationary phase appr..., timebandwidth 112 0
02 Jul 2008 Paley Type I Hadamard matrices Computes Hadamard matrices (H-matrices) of Paley Type I Author: Gernot Berger hadamard, transform, paley, mathematics, general 12 0
  • 4.0
4.0 | 1 rating
30 Jun 2008 1D Walsh Transform Function to generate a Walsh-Matrix one can use to do a 1D Walsh Transform Author: Andre matrix, 1d, transform, transforms, walsh 23 0
  • 4.0
4.0 | 1 rating
27 Jun 2008 Faster 2D-Hadmard Tranform Fast 2D-Hadamard/Walsh Transform based on Simple Matrix Vector Multiplication Author: Andre hadamard transform, natural ordered, walsh transform, transforms, sequency ordered 28 4
  • 4.5
4.5 | 3 ratings
23 Jun 2008 Berkeley Wavelet Transform Functions performing the Berkeley Wavelet Transform and its inverse Author: Ben Willmore wavelet gabor haar tr..., image analysis 48 1
  • 4.5
4.5 | 2 ratings
09 Jun 2008 Relative Wavelet Energy a program calculates Relative wavelet energy with brief tutorial Author: Guan Wenye time frequency, relative wavelet ener..., wavelets, rwe, wavelet transform 35 0
28 Apr 2008 Screenshot Hilbert-Huang Transform This submission is a realization of the Hilbert-Huang transform (HHT). Author: Alan Tan video processing, hilberthuang transfor..., audio processing, signal processing 273 12
  • 5.0
5.0 | 4 ratings
25 Feb 2008 Screenshot Speak the recognitized character The function enables you to recognize the character and speak it using the microsoft speech api Author: Usman Qayyum hit and miss transfor..., character recognition, application, text 2 speech 30 1
  • 4.0
4.0 | 1 rating
26 Dec 2007 Inverse laplace Transform of Fractional Functions function can effectively compute inverse lalace Transform of functions of the form 1/(s^u(s^v-a)) wh Author: Abhirup Lahiri inverse, transform, circuit, design, laplace 32 0
17 Dec 2007 Screenshot Polar To/From Rectangular Transform of Images converts rectangular image to polar and back Author: Prakash Manandhar image registration, transform, polar, rectangular, geometric transformat... 80 7
  • 4.16667
4.2 | 6 ratings
14 Nov 2007 Fast Walsh-Hadamard Transform The function implement the sequency(Walsh) ordered fast Walsh-Hadamard transform. Author: Gylson Thomas hadamard, 1d, walsh transform, sequency, transforms, fast 70 8
  • 4.33333
4.3 | 12 ratings
07 Nov 2007 Screenshot Fast Gaussian Transform mex implementation Mex inplementation of the FGT transform Author: Sebastien Paris gaussian, fgt, statistics, probability, transform, mex 142 2
  • 4.5
4.5 | 2 ratings
26 Oct 2007 Stability Test of AQM Network The program can determine the stability of AQM networks. Author: Yang Xiao aqm network, hybrid transform, 2d stability test 166 0
18 Oct 2007 Screenshot Image Rotation Correction A simple function for correcting the rotated images. Author: Amir Hossein Omidvarnia transforms, rotation correction l... 55 1
  • 3.0
3.0 | 1 rating
05 Sep 2007 Inverse Rationalized Arcsine Transform IRAU calculates percent correct scores from the rationalized arcsine transform Author: Piotr Majdak score, percent correct, statistics, arcsine transform, probability, rau 8 0
05 Sep 2007 Rationalized Arcsine Transform RAU calculates the rationalized arcsine transform Author: Piotr Majdak score, percent correct, statistics, arcsine transform, probability 8 0
28 Aug 2007 Screenshot Calculate Rationalized arcsine transform Converts proportions into rational arcsine units (rau's) for performing linear tests like ANOVA Author: Gautam Vallabha ttest, statistics, probability, rau, rationalized arcsine ..., proportional data 105 0
  • 5.0
5.0 | 1 rating
23 Aug 2007 Screenshot skeleton in 3D Distance transform oriented code for 3d skeletonization. Author: Gianni Schena 3d, oriented code, distance transform, skeleton, i, morphology 105 8
  • 3.375
3.4 | 8 ratings
08 Aug 2007 Parabola detection using Hough Transform Find parabolas with specific vertex in a binary image via Hough Transform. Author: Clara Isabel Sánchez hough transform parab..., image analysis 66 3
  • 2.0
2.0 | 1 rating
01 Aug 2007 inverse 2-D z transform for 2-D recursive discrete system The inverse 2-D z transform with simple algorithm for 2-D recursive discrete system has been obtaine Author: Yang Xiao 2d recursive discrete..., inverse 2d z transfor..., math 158 0
30 Jul 2007 inverse 2-D Laplace-z transform The program can get spatial-time response of 2-D Continuous-Discrete systems by taking inverse 2-D L Author: Yang Xiao 2d laplacez transform, 2d continuousdiscrete..., spatial 111 0
  • 4.0
4.0 | 1 rating
10 Jul 2007 Screenshot 3D Euclidean Distance Transform for Variable Data Aspect Ratio Implementation of 3D Euclidean distance transform for data with non-trivial aspect ratio. Author: Yuriy Mishchenko binary image, euclidean, distance transform, transforms, aspect ratio 39 3
  • 5.0
5.0 | 3 ratings
14 Jun 2007 Iris Location Locate the iris of eyes in an image of one eye Author: XU XIN hough transform, eyes, iris location, gui, binary image, display 58 4
  • 2.33333
2.3 | 3 ratings
10 May 2007 Screenshot rilt Regularized Inverse Laplace Transform Author: Iari-Gabriel Marino integral, inverse, resolution, optimization, transform, laplace 41 3
  • 2.5
2.5 | 2 ratings
11 Apr 2007 Hankel transform Efficient implementations of the Hankel transform and the inverse Hankel transform, respectively. Author: Marcel Leutenegger hankel transform, integration, quasidiscrete, quasi fast, mathematics 112 2
  • 5.0
5.0 | 1 rating
01 Apr 2007 ccom Canonical transforms Perform control state space canonical transforms Author: Paul Godfrey canonical transform, ctrb, obsv, control 137 0
  • 1.0
1.0 | 1 rating
08 Mar 2007 Screenshot Detect circles with various radii in grayscale image via Hough Transform Detect circular shapes in a grayscale image. Resolve their center positions and radii. Author: Tao Peng circular hough transf..., image analysis, potw, various, gradient, radius 256 24
  • 4.78261
4.8 | 23 ratings
06 Feb 2007 Hilbertf Evaluates the Cauchy Principal Value integral over a finite interval Author: mohankumar nandagopal math, integration, cauchy principal valu..., finite hilbert transf... 18 0
01 Feb 2007 Simple Watermarking using Wavelet transform Implementing Watermarking using discrete 2-D wavelet transform. Author: Abhijith Sreenivasan application, discrete 2d wavelet t..., haar w, decomposing image, watermarking 97 10
  • 4.4
4.4 | 7 ratings
11 Dec 2006 Nonparametric Power Spectrum Estimation With Thresholded Cepstrum A function to nonparametrically estimate the power spectrum via thresholded cepstrum Author: Steve Lutes nonparametric, fourier transform, threshold, power spectrum, spectral analysis, cepstrum 32 5
  • 5.0
5.0 | 1 rating
05 Dec 2006 Radix2 decimation in time 1D fast Fourier transform FFT The function implement the 1D radix2 decimation in time fast Fourier transform FFT algorithm Author: Gylson Thomas spectral analysis, fast fourier transfor... 30 1
  • 4.0
4.0 | 1 rating
05 Dec 2006 natural (Hadamard) and dyadic (Paley) ordered fast Hadamard transform The function implement the 1D natural(Hadamard) and dyadic (Paley) ordered fast Hadamard transform. Author: Gylson Thomas 1d, fast hadamard transfo..., dyadic, haramard, transforms, paley 15 1
  • 5.0
5.0 | 1 rating
12 Oct 2006 hankel The routines in this directory implement Hankel transforms of order 0 and 1 by digital filtering. Author: Brian Borchers filter design, fortran, filter analysis, hankel, transform, directory 21 0
21 Sep 2006 Screenshot Airy Function Generator Produces and Airy Pattern Author: Dan Burke solid circle, fourier transform, image, disk, airy function, application 40 1
24 Aug 2006 Waterfall FFT This program calculates the Waterfall FFT of a time history. Author: Tom Irvine fourier transform, fft, spectral analysis, waterfall, signal processing 56 5
  • 4.8
4.8 | 5 ratings
27 Mar 2006 Screenshot Hybrid Symbolic and Numerical Simulation Studies of Time-fractional Order Matlab code to duplicate all figures in the paper, self-containing. Author: YangQuan Chen numerical inverse lap..., symbolic math, fractional 134 0
15 Feb 2006 Gaver-Stehfest algorithm for inverse Laplace transform Gaver-Stehfest algorithm for inverse Laplace transform Author: Wahyu Srigutomo algorithm, optimization, inverse laplace trans..., gaverstehfest 43 7
  • 3.14286
3.1 | 7 ratings
06 Feb 2006 Screenshot Hough Transform for Circle Detection (GUI) Hough Transform for Circle Detection Author: Tan Chin Luh hough transform, circle detection, hough, image analysis 237 4
  • 2.0
2.0 | 3 ratings
06 Feb 2006 DFT on a specified frequency spectral analysis (amplitude & phase) of recorded time-series data Author: Hongxue Cai spectral analysis, amplitude, phase, signal processing, discrete fourier tran... 157 4
  • 4.66667
4.7 | 3 ratings
31 Jan 2006 Screenshot Hough Transform for circle detection An optimized Hough transform for circle detection. Author: Peter Bone circle, image analysis, hough transform, circle hough transfor..., fast 313 19
  • 4.1
4.1 | 10 ratings
27 Dec 2005 Partial Fast Fourier Transform Fast computation of part of an FFT using fractional fourier transform Author: Gerbrand van der Zouw fourier transform, fractional fourier tr..., spectral analysis 54 2
  • 5.0
5.0 | 1 rating
07 Dec 2005 Screenshot Simple Shape Detection using Hough Transform This demo shows simple method of shape detection using Hough Transform Author: Tan Chin Luh hough transform, fun, object detection, shape detection, image proce, hough 315 7
  • 4.28571
4.3 | 7 ratings
06 Dec 2005 Screenshot Detect lines in grayscale image using Hough Transform Detection of lines (line segments) in a grayscale image using gradient-based Hough Transform. Author: Tao Peng line detection hough ..., image analysis 147 5
  • 3.83333
3.8 | 6 ratings
07 Nov 2005 Screenshot Karhunen-Loeve Decomposition for Statistical Recognition and Detection Karhunen-Loeve Decomposition for Face Recognition Author: Alex Chirokov karhunen, face, loeve, image analysis, kl transform, pca 149 19
  • 4.77778
4.8 | 18 ratings
18 Oct 2005 Image Compression Using Wavelets Compression using wavelet transform which give better reconstruction. Author: S.Thayammal Subburaj compression, transform, image process, nonstationary signals, wavelet 115 14
  • 3.64706
3.6 | 17 ratings
05 Jul 2005 Polynomial Multiplication of Bilinear Transform This approach uses polynomial multiplication (convolution indeed) to implement bilinear transform... Author: Steven Huang filter design, filter analysis, bilinear transform, an, polynomial multiplica... 129 0
22 Apr 2005 Screenshot zoom FFT This program calculates the zoom FFT of a time history. Author: Tom Irvine zoom fft, spectral analysis, spectral, fast fourier transfor..., signal processing 68 4
  • 3.5
3.5 | 2 ratings
29 Mar 2005 Fast Chebyshev Transform (1D) Transfroms between nodal and spectral values. Author: Greg von Winckel polynomials, interpolation, transform, fast, points, chebyshev 155 3
07 Mar 2005 FFT2 optimization Speed up FFT2. Author: Luigi Rosa speed optimization, fft, fft2, filtering, discrete fourier tran... 99 2
22 Dec 2004 Integer order Hankel transform This routine implements Hankel transforms of integer order based on a Fourier-Bessel series. Author: Manuel Guizar transformation, processing, hankel, signal, integer order, transform 31 7
  • 4.14286
4.1 | 7 ratings
29 Nov 2004 Circle Detection via Standard Hough Transform Find circles with specific radius in a binary image via Standard Hough Transform. Author: Amin sarafraz hough transform circl..., image analysis 227 12
  • 3.28571
3.3 | 14 ratings
29 Nov 2004 Line Detection via Standard Hough Transform Detects lines in binary images via Standard Hough Transform. Author: Amin sarafraz hough transform, image analysis, line detection, image, circular hough transf... 297 18
  • 4.29412
4.3 | 17 ratings
23 Nov 2004 Fast implementation of circular Hough-transform A circular Hough-transform without loops. Author: Matthias Pfragner circle, circular, hough transform, transforms, hough 93 7
  • 3.66667
3.7 | 3 ratings
16 Aug 2004 Walsh Transform(2D) The function implements the 2D Walash Transform. Author: Ahmad Poursaberi walsh transform, transforms, genetic a, 2d, recognition pattern, signal processing 30 2
  • 4.5
4.5 | 4 ratings
16 Aug 2004 Walsh Transform(1D) The function implements the 1D Walash Transform. Author: Ahmad Poursaberi pattern recognition, 1d, walsh transform, transforms, genetic a, signal processing 66 1
  • 5.0
5.0 | 1 rating
12 Jul 2004 Fast Convolution Convolves two extremely large vectors in reasonable time. Author: Stephen McGovern fourier transform, fft, ifft, conv, dft, fast 85 9
  • 4.4
4.4 | 5 ratings
19 May 2004 invspecgram Inverse of MATLAB´s specgram. Author: Alfredo Fernandez fourier transform, invspecgram, specgram, spectral analysis 73 4
  • 3.66667
3.7 | 3 ratings
04 May 2004 2D Chebyshev Transform Transforms between 2d nodal and spectral data Author: Greg von Winckel square, domain, polynomial, transform, 2d, chebyshev 126 1
  • 4.0
4.0 | 2 ratings
06 Jan 2004 JPEG Compression An example for jpeg compression and the restoration. Author: Ohad Gal dct transform, compression, jpeg, function, image processing 339 46
  • 4.29091
4.3 | 55 ratings
24 Jul 2003 FastFFT Function A function to calculate frequency amplitudes, optionally makes Bode plots. Author: Rick Auch bode, filter design, fft, filter analysis, plot, hanning 46 7
  • 4.6
4.6 | 10 ratings
12 Jun 2003 fftd.m A dimensionless Discrete Fourier Transform program. Author: Paul Godfrey discrete, spectral analysis, fourier, transform, signal processing 115 5
  • 4.0
4.0 | 8 ratings
10 Jun 2003 fftd Computes the dimensionless fft. Author: Paul Godfrey fft, dimensionless, spectral analysis, fourier, transform, signal processing 124 0
03 Apr 2003 Screenshot MyFFT Script for generating pretty visualizations based on the Fast Fourier Transform of simple objects. Author: . Shawn Mikula fourier transform, gallery, fft, fast fourier transfor..., visualization 26 2
  • 3.0
3.0 | 1 rating
04 Apr 2002 Spectrogram (Short-time FT log magnitude) Computes the Short-time Fourier transform and displays as grayscale image or 3-D surface Author: Sean Fulop shorttime fourier tra..., spectral analysis, timefrequency analysi..., spectrogram 268 14
  • 4.2
4.2 | 15 ratings
16 Jun 2000 ffth.m Half space FFT Author: Paul Godfrey spectral analysis, fourier, transform, fast, half, space 124 0
07 Dec 1998 fftmspec.m Module Spectra of the Fourier Transform Author: Jesus Rojas Zavarce module, spectra, spectral analysis, fourier, transform 14 2
  • 3.5
3.5 | 2 ratings
16 Mar 1998 treewave Tree structured wavelet transform of the input matrix, up to the given level of decomposition. Author: Bulent Tavli time frequency, transform, tree, wavelets, wavelet, daubechies 28 1
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