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)

Averaging Filter without using imfilter by yagnesh

Filters the image nicely without using imfilter (gaussian noise, gaussian filter, averaging filter)

avgfilt.m

Nadaraya-Watson smoothing by Jan Motl

A non-parametrical regression (smoothing) tool using Gaussian kernel. (regression, smoothing, smooth)

[smoothed score h]=smoothing(ydata,varargin)

Average Filter by Jan Motl

Average filter performs image smoothing with integral image method. (image, smoothing, image processing)

image=averagefilter(image, varargin)

averagefilterTest.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)

MATLAB Implementation of Harmonic ANalysis of Time Series (HANTS) by Mohammad Abouali

Harmonic ANalysis of Time Series (HANTS) (harmonic analysis, c, compression)

[Data]=ReconstructImage(amp,phi,nb)

[amp,phi,yr]=HANTS(ni,nb,nf,y,ts,HiLo,low,high,fet,dod,delt...

[yOut, amp, phi]=ApplyHants(y,nb,nf,fet,dod,HiLo,low,high,d...

Edge Preserving Smoothing Filter by Daniel Bromand

Edge Preserving Smoothing Filter based on Nagao & Matsuyama. (edge, preserve, smoothing)

EdgePreservingSmoothingFilter.m

Quick spline smoothing for 1-D data by Damien Garcia

Z = SMOOTH1Q(Y) smooths data Y using a DCT- or FFT-based spline smoothing method (smoothing)

smooth1q.m

Image Processing (Interactive for Learners) by Hemprasad Patil

This script is developed for Image Processing Learners who can Interactively observe Workspace. (image processing, demo, article)

adv_thr_bg.m

adv_thres_range.m

bas_thres.m

SLM - Shape Language Modeling by John D'Errico

Least squares spline modeling using shape primitives (hermite, slm, cubic)

slm_tutorial

hermite2slm(harray)

plotslm(slm)

Fast B-spline class by Patrick Mineault

Fit, evaluate, differentiate non-uniform B-splines of any order - fast (bspline, pspline, spline)

CompileMexFiles()

fastBSpline

TryBSpline.m

Smoothing 2D Contours Using Local Regression Lines by Tolga Birdal

This submission contains both the implementation and the test function for 2D contour smoothing. (smoothing, contour processing, chain codes)

test_smooth_contours()

Moving averages / Moving median etc by Aslak Grinsted

Calculates moving averages (or median/fun) of a timeseries. (moving averages, wavelets, blockfilt)

[y]=moving(x,m,fun)

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)

Mono and bidimensional box-car convolution. Fast. by Andrea monti guarnieri

Fast & simple Boxcar window convolution. Same as conv2(x,ones(n1,n2),'same') (filter, smoothing, convolution)

boxconv(matin,lenc,lenr)

Barnes objective analysis by Stephen Pierce

A successive corrections scheme which is an easy-to-use cousin of kriging or optimal interpolation. (interpolation, oceanography, earth science)

barnes(x,y,z,xo,yo,xr,yr,npassmax)

Local Regression 2D by Arnout Tilgenkamp

Local Regression for 2D Data with plot/figure (finance, regression, local regression)

[y0]=MLR(X,y,span,X0,robuust)

Post-processing of PIV data by Damien Garcia

PPPIV carries out robust & automated post-processing of 2-D PIV velocity data. (piv, particle image veloci..., image processing)

pppiv(V,Vy,varargin)

Edge Preserving Smoothing by Nikos Papamarkos

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

EDGEPS.m

fSGolayFilt by Jan Simon

Fast Savitzky Golay filter as multi-threaded C-Mex (filter, analysis, smoothing)

TestfSGolayFilt(doSpeed)

fSGolayFilt(X, K, F, W, Dim)

Smooth Triangulated Mesh by Dirk-Jan Kroon

Accurate smoothing of triangulated patch / mesh (curvature, umbrella, smoothing)

FV2=smoothpatch(FV,mode,itt,lambda,sigma)

Ne=vertex_neighbours(FV)

Ne=vertex_neighbours_double(Fa,Fb,Fc,Vx,Vy,Vz)

Figutils by Todd Welti

A set of simple but useful figure utilities. Source data is NOT required. (graphics, figure, plot)

figutils(fignum)

smoothnew3(H,oct,stopf,f)

Interactive Smoothing by Tom O'Haver

Interactive smoothing for time-series signals (chemistry, physics, smoothing)

DemoSmooth1(n,h)

DemoSmooth2(n,h)

DemoSmooth3(n,h)

Two functions for smoothing/denoising of triangular meshes by J. Ole Kaven

2 functions to smooth noisy triangular meshes: Mean face normal filtering, Laplace flow filtering (mesh filter, smoothing, 3d)

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

smooth2a by Greg Reeves

Smooths a 2D matrix using a mean filter over a user-defined rectangle. Ignores and preserves NaNs. (2d, approximation, interpolation)

smooth2a(matrixIn,Nr,Nc)

weighted median by Sven Haase

Function for calculating the weighted median (median filter, weighted median, statistics)

weightedMedian(D,W)

Supersmoother by Douglas Schwarz

Friedman's supersmoother algorithm (algorithm, statistics, smoothing)

supsmu(x,y,varargin)

Estimatenoise by John D'Errico

Noise variance estimation from a signal vector or array (noise, variance, estimation)

estimatenoise(X,varargin)

Cepstral Alanysis for Spectral Analysis by Niclas Sandgren

How to use the cepstrum for smoothed estimation of the spectrum of a stationary signal (cepstrum, spectral analysis, smoothing)

CepSpec(y,mu)

LibLip - Matlab toolbox for multivariate scattered data approximation by Gleb Beliakov

Uses Lipschitz properties of a function to interpolate or approximate it from scattered data. (approximation, interpolation, multivariate interpol...)

boundlow(x,dim,p)

boundup(x,dim,p)

testf(x,y)

slidefilter by Hazem Baqaen

Sliding Sum Averaging Filter (Moving Average) (sliding sum, smoothing, moving average)

slidefilter(data,interval)

movave by Hazem Baqaen

Very efficient moving average filter (filter, dsp, smoothing)

movave(data,windowsize)

smoothLine by Andrew Hastings

A function that will create a smooth line plot (graph types, smoothing, plot)

smoothLine(varargin)

Savitzky-Golay Smoothing and Differentiation Filter by Jianwen Luo

Savitzky-Golay smoothing and differentiation filter. (savitzkygolay, differentiation, smoothing)

fc=sgsdf(x,n,dn,x0,flag)

test_sgsdf.m

2-D Savitzky-Golay Smoothing and Differentiation Filter. by Jianwen Luo

2-D Savitzky-Golay smoothing and differentiation filters, including those for mixed partial ... (filter design, filter analysis, savitzkygolay)

h=sgsdf_2d2(x,y,nx,ny,dx,dy,flag_coupling)

2-D Savitzky-Golay Smoothing and Differentiation Filter by Jianwen Luo

Obtain the coefficients of the 2-D Savitzky-Golay smoothing and differentiation filter, ... (differentiation, leastsquares, savitzkygolay)

h=sgsdf_2d(x,y,nx,ny,d,flag_coupling)

The Even-length Savitzky-Golay Filter by Jianwen Luo

The even-length Savitzky-Golay filter with a Gram polynomial approach. (filter design, filter analysis, savitzkygolay)

hnstm=sgsdf_even_gram_poly(n,s,t,m)

sgsdf_even_closed_form(n,s)

value=hinstm(i,n,s,t,m)

Dim Detection in Images by Ananth Nag Sastry Ganti

Detects any foriegn bodies in the images taken by CMOS Image sensor. (morphology, segmentation, gaussian filtering)

ed2(im)

smooth2 by Kelly Hilands

Smooths the data in a 2D matrix with a user-defined resolution. (approximation, interpolation, 2d)

smooth2(matrixIn, Nr, Nc)

Smooth Differentiation by Jianwen Luo

A smoothed differentiation filter (digital differentiator). (filter design, filter analysis, smooth)

h=smooth_diff(n)

smooth_diff_demo.m

Adaptive-Degree Polynomial Filter (Savitzky-Golay Filter) by Jianwen Luo

Obtain the polynomial degree selected in the adaptive-degree polynomial filter. (filter design, filter analysis, savitzkygolay filter)

h=sgsdf_smooth_closed_form(p,m)

hnstm=sgsdf_gram_poly_closed_form(n,s,t,m)

polynomial_degree=adpf(data_frame)

Savitzky-Golay smoothing and differentiation filter (closed-formed solutions) by Jianwen Luo

explicit (closed-formed) solutions of the Savitzky-Golay smoothing and differentiation filter (filter design, filter analysis, savitzkygolay)

h=sgsdf_explicit(n,s)

Savitzky-Golay Smoothing and Differentiation Filter by Jianwen Luo

Savitzky-Golay smoothing and differentiation filter calculated with the recursive properties ... (filter design, filter analysis, savitzkygolay)

hnstm=sgsdf_gram_poly(n,s,t,m)

2-D Savitzky-Golay Smoothing Filter by Jianwen Luo

i.e. the Polynomial smoothingfilter or the least-squares smoothing filter. (filter design, filter analysis, savitzkygolay)

h=sgsf_2d(x,y,px,py,flag_coupling)

Savitzky-Golay Smoothing Filter by YangQuan Chen

FIR filter design via local moving window LS fitting - A magic smooth and derivative formula (filter design, filter analysis, integerorder digital ...)

[c]=sgfilter(nL,nR,M,id)