Gaussian High Pass Filter by Muhammad Ammad

Implementation of high pass filter without using built-in functions. (high pass filter, edge detection, gaussian)

GaussianHighpass

Matlab Code Gaussian Elimination Method by Muhammad Ammad

Source = http://crunchmodo.com/matlab-code-gaussian-elimination-method/ (gaussian elimination ..., gaussian elimination, gaussian)

gauss_elimnation

Fit 2D Gaussian with Optimization Toolbox by Nathan Orloff

Fit a 2D rotated gaussian. http://en.wikipedia.org/wiki/Gaussian_function (image processing, optimization, signal processing)

fmgaussfit(xx,yy,zz)

spikegauss: continuous firing rate time series from discrete spiketimes by R P

Generate spike vector time series (SPKVEC) from the TIMESTAMPS of the spikes. (neuroscience, convolution, gaussian)

[spkvec,timevec]=spikegauss(timestamps,srate,min_timevec,ma...

Truncated multivariate normal by Tim Benham

Generates pseudo-random vectors drawn from the truncated multivariate normal distribution. (random, distribution, gaussian)

TruncatedGaussian(sigma, range, varargin)

rmvnrnd(mu,sigma,N,A,b,rhoThr,debug)

rmvnrnd_eg.m

Image Noise Reduction by Local Statistics by Tristan Ursell

Reduce image noise by measuring local pixel statistics and remapping intensities. (relative, deviation, statistics)

[varargout]=relnoise(Iin,sz,sigma,varargin)

Create a Simulated Image of Diffraction Limited Spots with Noise by Tristan Ursell

Create images with diffraction-limited spots of varying size and intensity, with noise. (image, create, creation)

[Iout,Inoise,spot_data]=spotmaker(im_sz,num_spots,varargin)

EM algorithm for Gaussian mixture model by Mo Chen

EM algorithm for Gaussian mixture. Works on arbitray dimensions with high speed and precision. (em, clustering, gmm)

emgm(X, init)

logsumexp(x, dim)

spread(X, label)

Variational Bayesian Inference for Gaussian Mixture Model by Mo Chen

Variational Bayes method (mean field) for GMM can auto determine the number of components (bayesian, gaussian, variational)

logmvgamma(x,d)

logsumexp(x, dim)

spread(X, label)

Gaussian-normally distributed random data by Nassim Khaled

it helps the user generate a normally distributed random set of data and then fit a Gaussian curve (random, normrdn, normal)

[mu,s,n,Data]=normrnd_normfit(MU,SIGMA,Length_Data,nb_bins)

Color Clustering Matlab by GAGAN

Computes the clusters of Pixels based upon their color. (color, color matlab, clustering)

binary_quant.m

Gauss elimination with complete pivoting by Nickolas Cheilakos

This function calculate Gauss elimination with complete pivoting (gauss, gaussian, linear algebra)

gecp(A)

ARMAX-GARCH-K Toolbox (Estimation, Forecasting, Simulation and Value-at-Risk Applications) by Alexandros Gabrielsen

ARMAX-GARCH-K Toolbox (agarch, statistics, apgarch)

[mu h]=egarchcore(parameters, data, ar, ma, x, p, q, y, m, ...

agarchcore(parameters, data, ar, ma, x, p, q, y, m, z, v, T...

apgarchcore(parameters, data, ar, ma, x, p, q, y, m, z, v, ...

Log Multivariate Normal Distribution Function by Benjamin Dichter

outputs log likelihood array for series of observations x where x_n ~ N(mu,Sigma) (gaussian, normal distribution, probability)

logmvnpdf(x,mu,Sigma)

Auto Gaussian & Gabor fits by Patrick Mineault

Fit 1D/2D Gaussian or Gabor to a curve/surface without start guesses for params (gaussian, curve fit, global optimization)

autoGaborSurf(xi,yi,zi,opts)

autoGaussianCurve(xi,zi,opts)

autoGaussianSurf(xi,yi,zi,opts)

Faded bar chart by Malcolm McLean

Bar chart add-on that shows the error as a fade-out rather than using error bars. (bar chart, error bars, faded errors)

fadedBar( h, errstd )

Patch Curvature by Dirk-Jan Kroon

Principal, Gaussian and Mean Curvature of triangulated mesh (curvature, gaussian, principal)

[Cmean,Cgaussian,Dir1,Dir2,Lambda1,Lambda2]=patchcurvature(...

Convolve/ Deconvolve Gaussian impulse response and unit impulse vectors by Bruce Raine

This function demonstrates how to convolve and deconvolve data as well as plots it and returns it. (filter, plot, signal processing)

plotImpulses(inFile)

Fast Gaussian Transform mex implementation by Sebastien PARIS

Mex inplementation of the FGT transform (statistics, probability, fgt)

test_fgt

mexme_fgt.m

1-D Gaussian peak and valley detector by Vidya Murali

Detects peaks and valleys in a 1-D signal (peak detector, gaussian, derivative)

[index1 index2]=peak_valley_detector(d, ker_sz, sigma, widt...

y=gderiv(data,sigma,w)

test_peak_valley_detector.m

Illustration of the Central Limit Theorem by Choqueuse Vincent

This script illustrates the central Limit theorem. (central limit theorem, statistics, gaussian)

illustration_CLT.m

BER Curve for QPSK in Gaussian Environment by Shah Gul Khan

QPSK Modulation BER Curve (qpsk, awgn, ber vs snr)

BER_QPSK_in_Gaussian_Environment.m

BER Curve for BPSK in Gaussian Environment by Shah Gul Khan

This program calculates BER for BPSK in Gaussian Environment. (ber, bpsk, gaussian)

BER_BPSK_in_Gaussian_Environment.m

Image noise generation by Michael Chan

Illustrates different noise type generation of different severity on images (blur, dilation, gaussian)

...

imagePlot( imageData, plotRowSize, plotColSize, ...

imageQualityIndex (img1, img2, block_size)

Truncated Gaussian by Bruno Luong

Generate a pseudo-random vector X drawn from the truncated Gaussian distribution (gaussian, normal, truncated)

TruncatedGaussian(sigma, range, varargin)

Separate Kernel in 1D kernels by Dirk-Jan Kroon

Decompose an arbitrary N dimensional filtering kernel into 1D kernels, for faster filtering (2d, gaussian, 3d)

[K1 KN ERR]=SeparateKernel(H)

Multivariate Gaussian Mixture Model Optimization by Cross Entropy by Sebastien PARIS

Stochastic multi-extremum optimization. (cross entropy, multivariate, gaussian)

ce_mvgm(Z , option);

sample_gaussian_mixture(mua , mub , mumin , mumax , ...

mexme_ce_gauss.m

Virtual Signal Generator by Thomas Reid

GUI with all the functionality of a standard signal generator, but without expensive equipment. (waveform, signal, sinusoidal)

VirtualSignalGenerator(varargin)

Gaussian Derivate by michael scheinfeild

example uses symbolic math for presenting 2-d Gaussian filter and 2nd derivate of the filter (gaussian, gaussian derivate, symbolic math)

test_sym.m

Wrapper of the jMEF java library by Sylvain Boltz

Matlab Wrapper for jMEF : A Java library to process mixtures of exponential families (exponential families, kullback leibler dive..., gaussian)

demo1

demo2

gaussian_mixture_model.m by Matthew Roughan

Estimate the parameters of a 1D Gaussian Mixture Model using the EM algorithm. (expectation maximizat..., estimation, em)

...

norm_density(x, mu, sigma)

normcdf(x, mu, sigma)

imgaussian by Dirk-Jan Kroon

Fast Gaussian filtering of 1D, 2D greyscale / color image or 3D image volume. (2d, filter, filtering)

I=imgaussian(I,sigma,siz)

gaussian discriminant functions boundary plots by kiriti gowda

This program generates random gaussian samples and plots the boundary. (boundary plot, discriminant function..., gaussian)

project4.m

Peak Interpolation by Travis Wiens

Estimates the location and magnitude of the peak of a continuous function between samples. (interpolation, dsp, measurement)

[x_max y_max A]=crit_interp_g(y,x);

[x_max y_max A]=crit_interp_p(y,x)

example1.m

initialize normal random number generator by Phillip M. Feldman

sets the state for Matlab's normal (Gaussian) random number generator (random, random numbers, random number generat...)

initrandn(seed)

Function Approximation by Ugo Pattacini

Encoding allows to represent any L2 function through a set of coefficients in a proper base. (wavelet, gaussian, cubic spline)

[c,y,E,N]=encJacobi(t,ydemo,ETol,Nmax,plotflag)

[c,y,E,yy]=encWavelet(t,ydemo,wavetype,j,plotflag,varargin)

[pp,y,E,I]=encCubspline(t,ydemo,ETol,Imax,plotflag)

gui calculator based on gaussian quadrature inegration by Nassim Khaled

gui calculator/integrator based on gaussian quadrature inegration (gui, calculator, integrator)

int_calculator(varargin)

Safe computation of logarithm-determinat of large matrix by Dahua Lin

Computes the logarithm of determinant of a matrix in a safe way that avoids overflow/underflow. (gaussian, logdet, determinant)

logdet(A, op)

gaussquad by Matt Fig

Adaptive form of gaussleg.m. (integration, gauss, gaussian)

gaussquad(f,a,b,tol)

crandn by Stephen Bocquet

Generate m sequences of n Gaussian random numbers with a specified autocorrelation function (dsp, correlated, random)

crandn(rgau,m)

crandndemo

MVG Multivariate Gaussian random number generator by Chad Lieberman

Generates vectors from the multivariate normal distribution parameterized by specified mean vector a (normal, generator, statistics)

mvg(mu,Sigma,N)

correlated Gaussian noise by michaelB brost

independent samples of correlated Gaussian vector process (gaussian, statistics, correlated)

correlatedGaussianNoise(Rpp, nSamp)

gaussdiff by Almar Klein

Small set of functions for doing basic differential geometry: applying Gaussian derivative filters t (filtering, gaussian, gaussian derivatives)

animateHessianGaussian(fname)

gaussiankernel(sigma, order, sigma2szeRatio)

gaussiankernel2(sigma, ox, oy, sigma2szeRatio)

Symbol Error Rate in 4-PAM modulation by Krishna Sankar M

The script computes the symbol error rate for 4PAM modulation (4pam, random alphabets, transmission)

script4PAM_ser.m

Histogram-based class separability measure by Theodoros Giannakopoulos

The provided functions demonstrate a histogram-based measure for class separability, given the sampl (statistics, probability, class separability)

computeHistError(Data1, Data2)

testClassSeperability(N,MEAN1,STD1,MEAN2,STD2, PLOT)

theoreticalError(m1, s1, m2, s2)

erfi function by Per Sundqvist

Imaginary error function (could be complex) using matlab's incomplete gamma function gammainc (complex, integral, gaussian)

ans=erfi(x)

PLOT_GAUSSIAN_ELLIPSOID by Gautam Vallabha

Plots two- and three-dimensional Gaussian distributions (statistics, probability, normal distribution)

plot_gaussian_ellipsoid(m, C, sdwidth, npts, axh)

SMIProm by Saumya Saurabh

The program helps you select ROI from image and find and process intensity profile (chemistry, physics, gui)

SMIProm(varargin)

confcallgrabit(varargin)

cropimage(fileName)

Finite Difference Beam Propagation Method by Edgar Guevara

Gaussian pulse propagated in free space using FDBPM (chemistry, physics, fdbpm)

FDBPM_free_space.m

Method of elimination of Gauss with pivoting partial by Giovanni Di Cecca, Virginia Bellino

Solve Linear Equation in format Ax=b (equation, gauss, linear algebra)

[A,B,pivot,det,iflag,x]=myGaussSolve2(A,B)

[max,ip]=maximus(A,k,pivot,n)

[x]=bsLPU(n,A,pivot,B)