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updated 6 days ago

Slides for the video "Direct Methods for Sparse Linear Systems : the MATLAB sparse backslash" by Tim Davis

Slides for a plenary talk at the 2006 SIAM Annual Meeting (whitepaper, article, paper)

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updated 6 days ago

getversion by Tim Davis

Portable replacement for verLessThan on old MATLAB releases (version, ver, verlessthan)

getversion

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updated 6 days ago

A pretty seashell GUI by Tim Davis

A GUI that draws a pretty seashell (gallery, seashell, parametric)

seashell

shellgui(varargin)

Contents.m

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updated 6 days ago

pagerankdemo by Tim Davis

A graphical demo of a random web surfer (aka Google's PageRank) (google, gallery, pagerank)

pagerankdemo

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updated 6 days ago

MESHND by Tim Davis

creation and nested dissection of regular 2D and 3D meshes (nested dissection, linear algebra, sparse)

meshnd

meshnd_example

meshnd_quality

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updated 6 days ago

gipper by Tim Davis

Creates a zip file, using regexp to include and/or exclude filenames that match a list of patterns (path, files, zip)

gipper

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updated 6 days ago

waitmex: using a waitbar inside a C mexFunction by Tim Davis

A set of C routines for creating, updating, and destroying a waitbar from within a mexFunction (waitbar, mexfunction, utilities)

waitex

waitexample

waitmex

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updated 6 days ago

UFget: MATLAB interface to the UF sparse matrix collection by Tim Davis

Downloads sparse matrices from the web directly into the MATLAB workspace, from a vast range of real (linear algebra, sparse, matrix)

UFget

UFget_defaults

UFget_lookup

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updated 6 days ago

spok: checks if a MATLAB sparse matrix is OK by Tim Davis

Useful for mexFunction authors only (linear algebra, sparse, mex)

spok

spok_install

spok_test

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updated 6 days ago

find_components by Tim Davis

finds the connected components of an image (morphology, segmentation, image)

find_components

find_components_example(example, dopause)

largest_component

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updated 6 days ago

subsref2 by Tim Davis

subsref2 is a replacement for subsref, performing the computation C=A(i,j). (sparse, subsref)

subsref2

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updated 6 days ago

LINFACTOR: uses LU or CHOL to factorize a matrix, or previously computed factors to solve Ax=b by Tim Davis

A simple M-file to solve Ax=b using LU or CHOL. (inv, linear algebra, linfactor)

linfactor

lintest

lintests

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updated 6 days ago

Gaussian Elimination Example (with partial pivoting): GEE, it's simple! by Tim Davis

A set of simple functions that illustrate Gaussian Elimination with partial pivoting (gaussian elimination, partial pivoting, linear algebra)

gee_its_short

gee_its_simple

gee_its_simple_backsolve

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updated 6 days ago

MATLAB Primer, 7th Edition, CRC Press, 2005 by Tim Davis

This is not the book itself, but a set of files printed in the book, "MATLAB Primer, 7th Ed." (matlab primer, book program, companion software)

bisect(f,x,tol)

ddom(A, tol)

ddomloops(A,tol)

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updated 6 days ago

Don't let that INV go past your eyes; to solve that system, FACTORIZE! by Tim Davis

A simple-to-use object-oriented method for solving linear systems and least-squares problems. (factorization, backslash, mldivide)

cheap_condest

cod

cod_qmult

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updated 6 days ago

sparseinv: sparse inverse subset by Tim Davis

Computes a subset of inv(A) for a real sparse matrix A, using Takahashi's equations. (sparse, inverse)

sparseinv

sparseinv_install

sparseinv_test

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updated 1 month ago

movingstd(x,k,windowmode) by John D'Errico

A (fast) windowed std on a time series (movingavg, standard deviation, std)

movingstd(x,k,windowmode)

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updated 1 month ago

HPF - a big decimal class by John D'Errico

High precision floating point arithmetic, a new class written in MATLAB (hpf, multiple precision, big decimal)

Demo script for my High Precision Floating point decimal

hpf_regression_testing

DefaultDecimalBase(DBaseNew)

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updated 5 months ago

minimize by Rody Oldenhuis

Minimize constrained functions with FMINSEARCH or FMINLBFGS, globally or locally (optimization, constrained optimizat..., derivativefree optimi...)

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updated 5 months ago

MVTec Halcon Wrapper by Dirk-Jan Kroon

MVTec Halcon function mex-wrapper (mvtec, halcon, medianimage)

tline_old;

compile_cpp_code.m

generate_help_files.m

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updated 5 months ago

Fast Bilateral Filter by Kunal Chaudhury

Fast O(1) implementation of the bilateral and the joint (or cross) bilateral filter. (bilateral filter, nonlinear diffusion, edgepreserving diffus...)

maxFilter(inImg , w)

shiftableBF(inImg, sigmaS, sigmaR, w, tol)

shiftable_jointBF(inImg, rangeImg, sigmaS, sigmaR, w, tol)

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updated 6 months ago

GODLIKE - A robust single-& multi-objective optimizer by Rody Oldenhuis

GODLIKE combines 4 global optimizers for both single/multi-objective optimizations (optimization, global optimization, multiobjective)

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updated 6 months ago

A suite of minimal bounding objects by John D'Errico

Suite of tools to compute minimal bounding circles, rectangles, triangles, spheres, incircles, etc. (miminum, bound, bounding)

incircle(x,y)

insphere(xyz,tri)

minboundcircle(x,y,hullflag)

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updated 7 months ago

Deep Learning Toolbox by Rasmus Berg Palm

Deep Belief Nets, Stacked Autoencoders, Convolutional Neural Nets and more. With examples. (machine learning, deep learning, autoencoder)

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updated 7 months ago

polyfitn by John D'Errico

Polynomial modeling in 1 or n dimensions (polyfit, modeling, regression)

polyfitn_demo

polydern(p,diffvar)

polyfitn(indepvar,depvar,modelterms)

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updated 7 months ago

SLM - Shape Language Modeling by John D'Errico

Least squares spline modeling using shape primitives (spline, splines, cubic)

slm_tutorial

hermite2slm(harray)

lse(A,b,C,d,solverflag,weights)

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updated 8 months ago

Pareto Set by Yi Cao

find the pareto set from n points with k objectives (optimization, multiobjective optimi..., pareto set)

membership=paretoset(X)

paretoset_examples.m

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updated 9 months ago

Senz3D Acquisition interface by Dirk-Jan Kroon

Creative Senz3D, Intel Interactive Gesture Camera (Time of Flight), Acquisition interface. (senz3d, gesture, intel)

WorldCoordinates2ColorImage(XYZ, UV,sizeI)

compile_cpp_files.m

example.m

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updated 9 months ago

Soft thresholding for image segmentation by SANTIAGO AJA-FERNANDEZ

Image segmentation based on histogram soft thresholding (fuzzy, thresholding, image processing)

B=shiftmat(A,n,dim,pad)

I_out=filter2B(h,I)

I_out=im_expand(I,Nx,Ny)

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updated 10 months ago

Conjugate Gradient Method by Yi Cao

Conjugate Gradient Method to solve a system of linear equations (mathematics, linear algebra, linear equation)

conjgrad(A,b,tol)

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updated 10 months ago

Image Denoising based on Non Local-means Filter and its Method Noise Thresholding by Shreyamsha Kumar B. K.

Image details that are removed by NL-means filter is added back after wavelet thresholding (non localmeans filter, bilateral filter, method noise)

[g_all, vv_all]=vifsub_est_M(org,dist, subbands, M);

[ssarr, l_arr, cu_arr]=refparams_vecgsm(org,subands,M)

bayesthf(y,noise_var)

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updated 10 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 1 year ago

Kernel Density Estimation by Hideaki Shimazaki

Fast kernel density estimation with an automatic bandwidth selection. (statistics, kernel, bandwidth)

sskernel(x,tin,W)

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updated 1 year ago

Locally Adaptive Kernel Density Estimation by Hideaki Shimazaki

Kernel density estimation with bandwidths locally adapted to data. (statistics, bandwidth, kernel)

sshist(x,N)

sskernel(x,tin,W)

ssvkernel(x,tin)

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updated 1 year ago

Image fusion based on pixel significance using cross bilateral filter by Shreyamsha Kumar B. K.

Fuses multifoucs and multispectral images by weighted average using the weights computed from CBF. (image fusion, pixel significance, multifocus)

[QABF,LABF,NABF,NABF1]=objective_fusion_perform_fn(xrcw,x)

[gv gh]=sobel_fn(x)

[hist_out]=imhist_fn(x)

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updated 1 year ago

Harmonic Wavelet based ISAR Imaging by Shreyamsha Kumar B. K.

ISAR Imaging using Harmonic Wavelets (inverse synthetic ape..., crossrange resolution, range resolution)

hammwin(N)

hammwin(N)

p=plots(x,y,z,img)

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updated 1 year ago

Image Denoising based on Gaussian/Bilateral Filter and its Method Noise Thresholding by Shreyamsha Kumar B. K.

Matlab code for Image Denoising based on GBFMT (image denoising, gaussian filter, bilateral filter)

[g_all, vv_all]=vifsub_est_M(org,dist, subbands, M);

[ssarr, l_arr, cu_arr]=refparams_vecgsm(org,subands,M)

[yb yg]=bilateral_filt2D(x,sigmas,sigmar,ksize)

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updated 1 year ago

Multifocus and multispectral image fusion based on pixel significance using DCHWT by Shreyamsha Kumar B. K.

Matlab code for multifocus & multispectral image fusion using DCHWT (image fusion, discrete cosine trans..., harmonic wavelets)

[C c]=dchwt_fn2(x,nlevel)

[QABF,LABF,NABF,NABF1]=objective_fusion_perform_fn(xrcw,x)

[gv gh]=sobel_fn(x)

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updated 1 year ago

Objective Fusion Performance Parameters & modified Fusion Artifacts measure by Shreyamsha Kumar B. K.

Computes the objective fusion performance parameters & modified fusion artifacts measure (image fusion, objective fusion perf..., modified fusion artif...)

[QABF,LABF,NABF,NABF1]=objective_fusion_perform_fn(xrcw,x)

[gv gh]=sobel_fn(x)

[xout_ext]=per_extn_im_fn(x,wsize)

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updated 1 year ago

Bivariant Kernel Density Estimation (V2.1) by Yi Cao

A tool for bivariant pdf, cdf and icdf estimation using Gaussian kernel function. (statistics, probability, bivariant gaussian ke...)

Bivariate Kernel Density Estimation Demonstration

gkde2.m

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updated 1 year ago

Variable Precision Integer Arithmetic by John D'Errico

Arithmetic with integers of fully arbitrary size. Arrays and vectors of vpi numbers are supported. (integer, biginteger, arithmetic)

demo_vpi

base2vpi(B,base)

bin2vpi(B)

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updated 1 year ago

nearestSPD by John D'Errico

Finding the nearest positive definite matrix (positive definite mat..., covariance matrix, covariance)

nearestSPD_demo

nearestSPD(A)

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updated 1 year ago

Kinect Matlab by Dirk-Jan Kroon

Microsoft Kinect, OpenNI wrapper, Skeleton, Depth (kinect, microsoft, skeleton)

J=imagemax(Iin)

[I_SSD,I_NCC]=template_matching(T,I)

compile_cpp_files(OpenNiPath)

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updated 1 year ago

LAPJV - Jonker-Volgenant Algorithm for Linear Assignment Problem V3.0 by Yi Cao

A Matlab implementation of the Jonker-Volgenant algorithm solving LAPs. (linear assignment pro..., linear assignment pro..., optimization)

lapjv(costMat,resolution)

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updated 1 year ago

Non-Local Patch Regression by Kunal Chaudhury

Robust image denoising in patch space (non-convex extension of the non-local means algorithm). (nonlocal means, patch regression, patch based method)

NLPR(imgIn, h, P, S, c)

minLp (f, w, p)

demo.m

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updated 1 year ago

distance2curve by John D'Errico

Find the closest point on a (n-dimensional) curve to any given point or set of points (nearest, closest, distance)

distance2curve(curvexy,mapxy,interpmethod)

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updated almost 2 years ago

Improvd downward branch and bound algorithm for regression variable selection by Yi Cao

Improved downward branch and bound to select the best subset for least squares regression problems. (optimization)

bbdireg(Y,X,n,nc)

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updated almost 2 years ago

Non-Local Euclidean Medians by Kunal Chaudhury

Non-local patch-based image denoising using Non-Local Euclidean Medians (NLEM). (nonlocal means, patch regression, nonlinear diffusion)

NLEM(imgNoisy, h, P, S)

findEuclideanMedian (f, w)

demo.m

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updated almost 2 years ago

Inverse (integrated) gradient by John D'Errico

Vectorized & fully sparse 1-d, 2-d, & 3-d integrated gradients (integration, cumulative, gradient)

consolidator(x,y,aggregation_mode,tol)

intgrad1(fx,dx,f1,method)

intgrad2(fx,fy,dx,dy,f11)

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updated 2 years ago

Inhull by John D'Errico

Efficient test for points inside a convex hull in n dimensions (convex hull, inhull, hull)

inhull(testpts,xyz,tess,tol)

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