FeatureFinder 2.4.1 by Feature Finder

A user-friendly tool for signal filtering and feature extraction. Well-suited to large data sets! (gui, data import, data export)

Comm_Alert(sMessage)

Comm_Exit()

Comm_Help(sTitle,sMessage)

Filter - smooth (calculating the moving average along a vector) by Adrian Lara-Quintanilla

This function calculates the moving average along that vector. It can be used to smooth a series. (smooth, filter, timeseries)

moving_average.m

Filter noise and interpolate microscopy images in frequency domain by Shalin Mehta

Remove spatial frequencies beyond the optical cutoff and perform physically accurate interpolation. (microscopy, filtering, interpolation)

[out,outscale]=opticalLowpassInterpolation(in,inscale,fcut,...

y=jinc(r)

TestBench_opticalLowpassInterpolation_Airy.m

Butterworth Filters by Chad Greene

Highpass, lowpass, bandpass, and bandstop Butterworth frequency filters. (filtering, dsp, frequency)

[filtered_signal,filtb,filta]=bandpass_butterworth(inputsig...

[filtered_signal,filtb,filta]=bandstop_butterworth(inputsig...

[filtered_signal,filtb,filta]=hipass_butterworth(inputsigna...

Unscented Kalman Filter (UKF) modeling of FitzHugh-Nagumo dynamics by Henning Voss

Unscented Kalman Filter (UKF) applied to FitzHugh-Nagumo neuron dynamics. (unscented kalman filt..., fitzhughnagumo, estimation)

FitzHughNagumo()

MRI field-shift calculation with virtual Zero-Padding by Job

Efficient forward Fourier-based calculation of the susceptibility-induced field shift in MRI (mri, magnetic susceptibili..., aliasing)

FBFC_CC_no_padding(X_dev)

FBFC_CC_vZP(X_dev, degree)

FBFC_KF_vZP(X_dev, degree)

Estimating Time-varying Neural Interactions by Hideaki Shimazaki

Matlab code for estimating time-varying interactions of neurons from spike data. (statistics, mathematics, optimization)

BayesFactor(model,cell_id)

BayesFactor(model,cell_id)

CompSync(raw,D,r)

2-D adaptive noise-removal filtering by SANTIAGO AJA-FERNANDEZ

Modified version of WIENER2 from image toolbox with proper noise estimation (image processing, noise estimation, gaussian noise)

wienerC(g,varargin)

videoioPlayer by georg

This package contains a videoplayer class capable of viewing and processing video files in real-time (videoplayer, image processing, video processing)

demo1(fname)

demo2(fname)

demo_photoshopTB(fname)

Nth_Oct_Hand_Arm_&_AC_Filter_Tool_Box by Edward Zechmann

Features Nth octave band, Hand Arm, and A and C weighting filters (noise, nth octave, octave)

ACdsgn(Fs)

Test_Nth_oct_filters1(resample_filter)

[A2, A_str, real_digitsL, real_digitsR, imag_digitsL, imag_...

Comb Filter by Jeff Tackett

Returns IIR coefficients for a Nth order Comb Filter (signal processing, filtering)

comb(N, varargin)

Filtering using Butterworth and Chebyshev by vj

Filtering an user defined signal or .wav file using Butterworth and Chebychev. Noise - AWGN. (gui, signal processing, filtering)

proj_filtering(varargin)

Live audio stream analyser and voice coach by Steve Lawrence

A program that uses 'analoginput' to create a live audio stream, which is analyzed in real-time. (singing, coach, signal processing)

liveon.m

Simple drums separation with NMF by Antoine Liutkus

Illustrates the use of NMF for the separation of drums in polyphonic music (source separation, audio, drums)

drums_separation.m

Guided Filter by Rachel

An 2D edge-preserving filter derived from a local linear model. Related to bilateral filter. (edgepreserving, filtering, hdr compression)

guided_filter(input, guide, epsilon, win_size)

guided.m

Triangular Filterbank by Kamil Wojcicki

Frequency domain triangular filterbank with uniform spacing on arbitrarily warped frequency scale. (filter, melody scale, mel filterbank)

trifbank( M, K, R, fs, h2w, w2h )

2-D convolution using the FFT by David Young

Convolution in 2-D using the Fast Fourier Transform. (convolution, filtering, fft)

conv_fft2(x, m, shape)

exindex(arr, varargin)

Fast 2-D convolution by David Young

Speeds up many 2-D convolutions using the SVD; also finds a fast approximation in other cases. (2d, filtering, convolution)

convolve2(x, m, shape, tol)

exindex(arr, varargin)

Savitzky-Golay smooth/differentiation filters and filter application by Diederick

Routine to generate Savitzky-Golay smoothing and differentiation filters and routine to apply these (filtering, differentiation, smoothing)

savitzkyGolay(x,n,dn,x0,W,flag)

y=savitzkyGolayFilt(x,N,DN,F,W,DIM)

Kuwahara Filter Implementation by Carlos Wang

Kuwahara filter implementation for coloured images. (filtering, kuwahara filter, edge preserving filte...)

kuwahara_filter( I, L )

Shock Filtering in Matlab by Tolga Birdal

Very simple image enhancement and sharpening using shock filters (enhancement, filtering, image processing)

[G]=shock_filter(I, maskSize, iterations, dt)

Fourier transform demonstration by David Young

An introductory demonstration of the discrete Fourier transform, making use of the fft function. (filtering, fast fourier transfor..., dft)

Introductory Fourier Transform Demonstration

Fast Non-Local Means 1D, 2D Color and 3D by Dirk-Jan Kroon

NL-means image and signal denoising filter based on similarity between pixel patches (nonlocal, 3d, denoising)

J=NLMF(I,Options)

NLMF2Dtree(I, Options)

Image Edge Enhancing Coherence Filter Toolbox by Dirk-Jan Kroon

Advanced 2D/3D noise removal and edge enhancing with anisotropic diffusion filtering ( Weickert ) (3d, ridge, image enhancement)

CoherenceFilter(u,Options)

D=derivatives(I,option)

I=imgaussian(I,sigma,siz)

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)

Edge Preserving Smoothing by Nikos Papamarkos

% This program performs Edge preserving smoothing in color images. % (filtering, smoothing, edge)

EDGEPS.m

Min/Max filter by Bruno Luong

Multidimensional non-linear min/max filtering (running min, minmax filter, dilatation)

KramerBruckner(A, window)

benchminmax()

minmaxfilt(A, window, outtype, shape)

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)

Variable cardinality bookkeeping functions by Edmund Brekke

These four functions makes it easy to work with lists of sets with variable cardinalities. (cardinality, filtering, signal processing)

begInd2TCloud(begInd,nElement)

endInd2TCloud(endInd)

tCloud2BegInd(tCloud)

Toolbox image by Gabriel Peyre

A toolbox that contains image processing functions (filtering, image analysis, image processing)

Toolox Image - A Toolbox for General Purpose Image Processi...

apply_colormap(M,col)

callback_atrou(x,dir,options)

Toolbox Non-Local Means by Gabriel Peyre

A toolbox for the non-local means algorithm (denoising, filtering, nonlocal means)

checkstrs(in, valid_strings, function_name, ...

clamp(x,a,b)

compute_best_threshold(type, M,M0,sigma,options)

BlockShrink denoising by Dengwen Zhou

BlockShrink code package (image denoising, wavelet transform, sure)

Calc_MSE_PSNR(clean,denoised)

DenoiseFun(noisy, sigma)

Parameters(subb)

NeighShrinkSURE denoising by Dengwen Zhou

NeighShrinkSURE codes (filtering, image, denoising)

Calc_MSE_PSNR(clean,denoised)

NeighShrinkSUREdenoise(noisy, sigma, wtype, L)

OptimalThreshold(sub_coef,Rsim)

Signal Trimmer (Smoothing) by Farhad Bayat (Zanjan)

Using FBtrim.m it is possible to trim, filter and smooth noisy signals especially differentiated sig (trimmer, refining, smoothing)

y =fbtrim(NoisyData,Param)

test_fbtrimmer.m

Gabor function masks by David Young

Create Gabor-function convolution masks (convolution, filtering, image processing)

gabormask(Size, sigma, period, orient)

Pinch and Spherize Filter by Dirk-Jan Kroon

Distortion filter, warps an image, spherize or pinch as in Photoshop (distortion filter, photoshop, pinch)

Iout=movepixels(I,Tx,Ty)

[J,Tx,Ty]=PinchSpherize(I,Gamma,R0)

FFTSELFFILTER Frequency Domain Image Auto Filtering by Vlad Atanasiu

Enhances powerful frequencies. (filtering, autofilter, image)

fftsf(ImgIn,degree)

fftsf_movie.avi

3D Volume Interpolation with ba_interp3: Fast interp3 replacement by Brian

Faster Replacement for interp3 (filtering, interp3, interpolation)

ba_interp2(F, X, Y, method)

ba_interp3_test.m

imsubtract by Matt Fig

GUI for subtracting one pic from another with filtering and plotting. (subtraction, gui, photographs)

imsubtract()

Homomorphic filtering by Qadeer Ahmed

Homomorphic filtering for beginners (filtering, homomorphic filtering, image processing)

homofil(im,d,r,c,n)

ho_filter.m

Generalised Sobel Filter for Edge Detection by Jeny Rajan

Program for generating edge images using sobel filter of any size (edge, filter, sobel)

GSobel(img,Wsize)

Molecular Image Denoising by Jeny Rajan

Program for removing noise from molecular level images (enhancement, molecular image, image denoising)

R=hybrid(I,T)

RGB to Black and White by Anthony Gabrielson

Converts RGB images to black and white images (bw, rgb, mex)

Non-Local Means Filter by Jose Vicente Manjon-Herrera

Non-Local Means Filter for image denoising (nonlocal, means, filtering)

[output]=NLmeansfilter(input,t,f,h)

demo.m

2D Gabor Wavelets by Zhi Chai

Create and show 2D Gabor Wavelets (gabor, 2d gabor wavelets, kernel)

GaborWavelet (R, C, Kmax, f, u, v, Delt2);

GaborExample.m

Color Filtering by Kannan Keizer

This function can be used for separating or segment Red components, Green components and Blue Compon (filtering, color images, color)

colorfilter(img,color)

Improved 2D Gabor Filter by Stiven Schwanz Dias

Bi-dimensional Gabor filter with DC component compensation. (bidimensional, gabor filter, filtering)

[G,GABOUT]=gaborfilter(I,S,F,W,P);

gabortest.m

Diffusion Distance by Matthew Foster

Calculate the diffusion distance between histograms (histogram, distance, image analysis)

diffusion_distance(im1, im2, sig, dim, threshold, pad_type)

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)

Audio Filter GUI DEMO by Theodoros Giannakopoulos

This demo provides a simple GUI for basic filtering of audio data. (audio, speech, sound)

GUI_FILTER(varargin)

generateBandPassFilter(Fpass1, Fstop1, Fpass2, Fstop2, Fs, ...

generateBandStopFilter(Fpass1, Fstop1, Fpass2, Fstop2, Fs, ...