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updated 9 days ago

edge_detection_using_LoG.zip by Devinder

Edge Detection using Laplacian of Gaussian (edge detection, image processing, laplacian)

find_edges(img,step_size,sigma)

run_edge_det()

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updated 1 month ago

Gaussian interpolation with successive corrections by OUC Polar

Code for Gaussian Interpolation with successive corrections (interpolation, gaussian)

gaussian_interpolation.m

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updated 1 month ago

Bilateral Filter by Suraj Kamya

Edge-preserving and noise-reducing smoothing filter for images. (bilateral filter, nonlinear, edge preserving)

[out]=IEF(orgimg,nimg,dimg)

[out]=PSN(orgimg,mimg)

[out]=bif(im,sigd,sigr,n)

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updated 3 months ago

Retouching Depth of Field using Depth based Selective Gaussian Blurring by S Mukherjee and R Guddeti by Subhayan Mukherjee

Altering the depth of field of an image based on a supplied depth map and user's depths of interest. (blur, gaussian, depth of field)

depth_blur(im_src, depth_map, depth_focus, blur_rate)

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updated 3 months ago

3D Gaussian ellipses constant probability curves by Hugo

Construct data points of ellipsoids depicting contour curves of 3-dimensional Gaussian distributions (contour curves, covariance matrix, data points)

ellipsedata3(covmat,center,numpoints,sigmarule,varargin)

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updated 3 months ago

Gaussian ellipses constant probability curves by Hugo

Construct data points of ellipses representing contour curves of bivariate Gaussian distributions. (gaussian, probability, contour curves)

ellipsedata(covmat,center,numpoints,sigmarule,varargin)

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updated 3 months ago

Generating Gaussian Filter 2D Matrix by Duc Chung Tran

The function is used to generate Gaussian Filter 2D Matrix. (gaussian, filter, matrix)

g=Gaussian_filter(Filter_size, sigma)

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updated 3 months ago

Retinal Vessel Detection by Gabor Transform and Machine Learning, a Tutorial by ted p teng

A tutorial on detection of retinal vessels by Gabor transform and machine learning (pattern recognition, vessel segmentaion, machine learning)

Gabor_GLM_FEX.m

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updated 4 months ago

Integrals of gaussian against quadratic exponential by Peter Cotton

Integrals of gaussian against quadratic exponential (gaussian)

truncatedExp( mu, sgm, x1, x2, a0, a1, a2 )

truncatedExpMc( m, sgm, x1, x2, a0, a1, a2 )

test_truncatedExp.m

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updated 5 months ago

Gaussian Elimination with Pivoting Method by Cheuk

Function uses Gauss elimination with pivoting to solve a linear system in standard format. (linear, algebra, gaussian)

GAUSS_ELIM(A, b)

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updated 6 months ago

Patch Curvature by Dirk-Jan Kroon

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

[Cmean,Cgaussian,Dir1,Dir2,Lambda1,Lambda2]=patchcurvatur...

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updated 8 months ago

probability density function of (Gaussian Normal Distribution) by Jamal Ahmad

Gaussian Normal Distribution is one of the most popular distributions that is widely used. (gaussian normal distr..., pdf, probability)

normal_gaussian_pdf.m

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updated 10 months ago

Finite Difference Beam Propagation Method by Edgar Guevara

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

FDBPM_free_space.m

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updated 1 year ago

Gaussian High Pass Filter by Muhammad Ammad

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

GaussianHighpass

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updated 1 year ago

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)

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updated 1 year ago

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,...

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updated 1 year ago

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

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updated 1 year ago

Image Noise Reduction by Local Statistics by Tristan Ursell

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

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

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updated 2 years ago

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)

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updated 2 years ago

EM algorithm for Gaussian mixture model by Mo Chen

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

emgm(X, init)

logsumexp(x, dim)

spread(X, label)

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updated 2 years ago

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, variational, gaussian)

logmvgamma(x,d)

logsumexp(x, dim)

spread(X, label)

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updated 2 years ago

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 (gaussian, random, normal)

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

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updated 2 years ago

Color Clustering Matlab by GAGAN

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

binary_quant.m

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updated 2 years ago

Gauss elimination with complete pivoting by Nickolas Cheilakos

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

gecp(A)

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updated 2 years ago

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

ARMAX-GARCH-K Toolbox (garch, gjrgarch, egarch)

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

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

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

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updated 2 years ago

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)

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updated 2 years ago

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)

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updated almost 3 years ago

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 )

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updated almost 3 years ago

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)

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updated almost 3 years ago

Fast Gaussian Transform mex implementation by Sebastien PARIS

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

test_fgt

mexme_fgt.m

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updated 3 years ago

1-D Gaussian peak and valley detector by Vidya Murali

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

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

y=gderiv(data,sigma,w)

test_peak_valley_detector.m

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updated 3 years ago

Illustration of the Central Limit Theorem by Choqueuse Vincent

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

illustration_CLT.m

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updated 3 years ago

BER Curve for QPSK in Gaussian Environment by Shah Gul Khan

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

BER_QPSK_in_Gaussian_Environment.m

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updated 3 years ago

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

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updated 3 years ago

Image noise generation by Michael Chan

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

...

imagePlot( imageData, plotRowSize, plotColSize, ...

imageQualityIndex (img1, img2, block_size)

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updated almost 4 years ago

Truncated Gaussian by Bruno Luong

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

TruncatedGaussian(sigma, range, varargin)

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updated almost 4 years ago

Separate Kernel in 1D kernels by Dirk-Jan Kroon

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

[K1 KN ERR]=SeparateKernel(H)

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updated 4 years ago

Multivariate Gaussian Mixture Model Optimization by Cross Entropy by Sebastien PARIS

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

ce_mvgm.m

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

mexme_ce_gauss.m

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updated 4 years ago

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)

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updated 4 years ago

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

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updated 4 years ago

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

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updated 4 years ago

gaussian_mixture_model.m by Matthew Roughan

Estimate the parameters of a 1D Gaussian Mixture Model using the EM algorithm. (statistics, estimation, gaussian)

...

norm_density(x, mu, sigma)

normcdf(x, mu, sigma)

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updated almost 5 years ago

imgaussian by Dirk-Jan Kroon

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

I=imgaussian(I,sigma,siz)

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updated almost 5 years ago

gaussian discriminant functions boundary plots by kiriti gowda

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

project4.m

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updated 5 years ago

Peak Interpolation by Travis Wiens

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

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

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

example1.m

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updated 5 years ago

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)

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updated 5 years ago

Function Approximation by Ugo Pattacini

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

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updated 5 years ago

gui calculator based on gaussian quadrature inegration by Nassim Khaled

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

int_calculator(varargin)

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updated 5 years ago

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. (logarithm, determinant, logdet)

logdet(A, op)

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updated almost 6 years ago

gaussquad by Matt Fig

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

gaussquad(f,a,b,tol)

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