Empirical Wavelet Transforms by Jerome Gilles

This toolbox proposes the original implementation of Empirical Wavelet Transforms (signal processing, image processing, mathematics)

AnglesLocalMax(f,N)

AnglesLocalMaxMin(f,N)

Angular_sector(theta,radius,theta0,theta1,r0,r1,gammaw,Dthe...

Speckle Noise Reduction in Ultrasound Images by Ashish Meshram (Meet)

This project implements various filters for Speckle Noise Reduction in Ultrasound Images. (image processing, wavelet, butterworth filter)

GetFilePath()

Preprocess(I)

dftuv(M, N)

Morlet Wavelet Kernel by Marcelo Cicconet

2D real and imaginary Morlet wavelet kernels (morlet, gabor, wavelet)

morlet(scale,orientation,npeaks)

Frequency band for DWT by khanh Nguyen Le

with this code you can find approximation frequency band cA and detail frequency bands cD of a DW. (wavelet, frequency band, frequenzbereich)

[cA cDlv] =frequenzbereich(fs,lv)

Discret Wavelet Transform got Daub2 by Santhana Raj

Implements the Daubechies 2 DWT w/o using the inbuilt function (daubechies, wavelet, db2)

[yh,yl]=d2wavelet(x,Fs,level)

local_max_mode_new.m by Wufeng Xue

This code can be used in edge detection with wavelet transform. (edge detection, wavelet, local maxima)

local_max_mode_new(v,h,thr,a0,n)

De-noising signal using DWT by Nadya Amalia

m-file for de-noising signal using discrete wavelet transform. matlab 7.0 (denoising, signal, dwt)

dekomposisilev3.m

Wavelet Decomposition For Images by Michael Chan

The demo decouples the wavelet operations from the plotting. (denoising, transform, compression)

PSNR(A,B)

displayResultantWaveletImages(A, H, V, D, levelOfDecomposit...

observeWaveletDecompositionBenchmark_N_levels.m

The INface toolbox v2.0 for illumination invariant face recognition by Vitomir Struc

Photometric normalization techniques used for achieving illumination invariant face recognition. (illumination normaliz..., histogram equalizatio..., waveletb)

DCT_normalization.m

adaptive_nl_means_normalization.m

adaptive_single_scale_retinex.m

Image despeckling using a non-parametric statistical model of wavelet coefficients by Kanchi

A demo code of Image despeckling using a non-parametric statistical model of wavelet coefficients. (image processing, signal processing, image denoising)

denoise_BSPC_2011_main

R-peak detection using DWT and classification of arrhythmia using bayesian classifier by Selva

This code is developed at PSG Tech- Embedded Systems Design Laboratory (bayesian classifier, wavelet, ecg)

wavelet5point.m

Filter with Gabor Kernel using FFT by Edward Wiggin

Filter an image with M*N Gabor kernels, return the result. Use FFT to accelerate. (image processing, gabor, wavelet)

gaborConvF(img,G,gWinLen)

genGaborKernel( mu,nu,sigma,scaleXY )

genGaborKernelF( mu,nu,sigma,scaleXY,imgSz )

continuous wavelet transform and inverse by jon erickson

Continuous wavelet transform (CWT) and Inverse CWT for reconstructing original signal. (cwt, wavelet, time frequency)

...

...

invcwt(wvcfs, mother, scale, param, k)

Color filter array color reproduction using cycle-spinning by Kanchi

Color filter array (CFA) image color reproduction using a wavelet approach. (image interpolation, color filter array, cfa)

CFA_IJEC_2010_main

Wavelets and fractals: where the 2 techniques meet by Alexey Borovoy

In this submission a unique position of Haar wavelet in image processing is revealed. (haar, wavelet, fractal)

compare(N)

hwdt(x)

Plot wavelet image (2D) decomposition by Benjamin Tremoulheac

A short function for displaying wavelet image decomposition coefficients (wavelet, multiresolution, image processing)

plotwavelet2(C,S,level,wavelet,rv,mode)

Wavelet-based MS coherence estimator by Gleb Tcheslavski

a wavelet-based connectivity metrics (coherence, wavelet)

w_cohere(x,y,fs_o,Dt,t_step,fs_d,w_name,Scale)

When wavelet meet HMM by Su Dongcai

1D signal denoising and classification using WHMT (signal classification, em, hidden markov model)

Idwt(x,h,L);

Iidwt(w,h,L);

basic_rp(L)

Non-Redundant Shift-Invariant Complex Wavelet Transform by Reshad Hosseini

2 m-file functions for applying complex wavelet and inverse complex wavelet transforms. (complex wavelet, face recognition, signal processing)

[yout,Sizes]=CWT_downcoef(x,levels,dim)

yout=CWT_upcoef(array_in,Sizes)

example.m

MGWT by Jesús P. Mena-Chalco

Identification of protein coding regions using the Modified Gabor-wavelet transform. (protein coding region, gene, identification)

MGWT(varargin)

ECG Beat Calculation by Arun Kumar

Calculates ECG beats per minute (ecg signal, cardiology, heart)

ecgbeat.m

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)

Surfacelet Toolbox by Yue Lu

Surfacelet transform: a multiresolution transform for efficient representation of multidimensional s (transforms, directional filter ba..., surfacelet)

HourGlassDec(X, InD, OutD, HGfname, varargin)

HourGlassRec(Subs, InD, OutD, HGfname, varargin);

Meyer_sf_vkbook(x)

PDTDFB toolbox by Truong Nguyen

PDTDFB toolbox for computing the shiftable complex directional pyramid decomposition (curvelet, contourlet, directional)

SNR(in, est)

ang_pdfb(ang, nlev)

backsamp(y)

Wavelet Subband coding for speaker recognition by raghu ram

fn extracts wavelet feature vector which could be used for speaker recogniton from speech signal. (speaker recognitions, wavelet, gui)

f=enframe(x,win,inc)

f=statusbar(p,f)

sbc_2(s,fs)

Image Compression using Wavelet by Jebakumari Beulah

This code compress the image using wavelets. Both gray scale and RGB images can be applied and some (code, compress, compression)

wavecompression.m

EZW (Embedded Zerotree Wavelet) by Kanchi

Matlab implementation of EZW (Embedded Zerotree Wavelet) (compression, ezw, embedded zerotree)

func_DWT(I, level, Lo_D, Hi_D);

func_InvDWT(I_W, S, Lo_R, Hi_R, level);

func_Myappcoef2(c,s,varargin)

Calculating Beat rate of heart by DWT by ehsan mirrahimi

Beat rate of an ECG signal (beat rate, time frequency, daubechies)

ECG.m

PhysioNet_ECG_Exporter_2.m

IMAGE DENOISING USING BAYES THRESHOLDING OF WAVELET COEFFICIENTS by aaa asdfgh

this work is aimed to implement bayes thresholding. (wavelet, soft, bayes)

WPSNR(A,B,varargin)

op=sthresh(X,T);

rmse=compare11(f1,f2,scale)

Wavelet based image compression using segmentation by THAYAMMAL SUBBURAJ

The optimal wavelet function in wavelet based image compression system was examined using different (compression, image compression, wavelet)

Bior11.m

Bior11.m

Bior11.m

Numerical differentiation based on wavelet transforms by Jianwen Luo

Numerical differentiation based on wavelet transforms (CWT and DWT) (time frequency, wavelets, wavelet)

dudx=derivative_cwt(u,wt_name,wt_scale,dx,trt_flag)

dudx=derivative_dwt(u,wt_name,wt_level,dx,trt_flag)

spline_scale_function(varargin)

2-D lifting wavelet transform by Wang Tianhui

Self-contained 2-D image decomposition and reconstruction based on lifting wavelet algorithm (lifting, bior44, cdf 97)

colwavelift(x, optx, L, direction, mode)

wavelift(x, nlevel, wname)

MultiWavelet Tools by Bessam Al-Jewad

MultiWavelet computation using the matrix method (multiwavelet, time frequency, wavelets)

Y=dd2(x)

[P,Q]=MWS(wavnam)

a=IGHM(b)

Laplacian Pyramid Toolbox by Minh Do

Matlab toolbox that implements the Laplacian pyramid (LP) decomposition and a new pseudo-inverse rec (filter bank, multiresolution, multiscale)

SNR(in, est)

filtdn(x, f, dim, extmod, shift)

imageshow(im, range)

Contourlet toolbox by Minh Do

Contourlet transform: an efficient and flexible multiresolution, local, and directional image ... (contourlet, transforms, filter bank)

Image Compression Using Wavelets by S.Thayammal Subburaj

Compression using wavelet transform which give better reconstruction. (compression, wavelet, transform)

wavelet.m

Gabor wavelet filter for texture extraction by Jasmine John

Creates a gabor wavelet filter for texture extraction. (application, texture extraction, matl)

[gab]=gaborcreate(M,N)

haarmtx by Frédéric Chanal

Compute a n*n Haar matrix. (haar, wavelet, audio processing)

H=haarmtx(n)

wave_cov by B.J. Whitcher

A series of files that perform univariate and bivariate wavelet analysis of discrete time series. (time frequency, wavelets, wavelet)

dwt_dbp(X, wavelet, nlevels, boundary)

modwt_brick_wall(X, wavelet, N)

modwt_dbp(X, wavelet, nlevels, boundary)

inter_patt.m by Farhad Aslani

A simple animation of two wavelets which interfere. (time frequency, wavelets, wavelet)

inter_patt.m

treewave by Bulent Tavli

Tree structured wavelet transform of the input matrix, up to the given level of decomposition. (time frequency, wavelets, tree)

[gout]=wav2(gr1,level)

[out]=wav1(inp)