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updated 2 years ago

Gantry detector tilt correction by Denny Milakara

Transforms CT DICOMs with Gantry tilt angle (image processing, ct, gantry)

gantry2(varargin)

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updated 2 years ago

Noncontact Speckle-Based Velocity Meter by Sagheb Kohpayeh Araghi

Finding a velocity of substance by using radon transform. (velocity, radon, image)

Johann

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updated 2 years ago

Wavelet Decomposition For Images by Michael Chan

The demo decouples the wavelet operations from the plotting. (wavelet, image processing, multiresolution)

PSNR(A,B)

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

observeWaveletDecompositionBenchmark_N_levels.m

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updated 2 years ago

2D Distance Transform of Arbitrary Points by Tristan Ursell

Distance transform from arbitrary points at a user set resolution and range. (image, point, points)

[Xvec,Yvec,Dist]=clouddist(Xin,Yin,xlim,ylim,res)

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updated 2 years ago

Fourier Coefficient Conversion by Sebastian W

Converts Fourier Coefficients from exponential to cos/sin and the other way around. (fourier, transform, coefficient)

FOURIERcossin2exp(a, b)

FOURIERexp2cossin(c)

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updated almost 3 years ago

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

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updated 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 almost 4 years ago

ptimtransform by Maxime

ptimtransform transforms an image and a list of points all together. (transform, image, points)

ptimtransform(pts,img,T)

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updated almost 4 years ago

Back projections and tensor transform by Michael Chan

Illustrates back projections and Professor Grigoryan's tensor transform. (tensor, backprojections, splitting signals)

A=correct_image(A)

B=f_pst(A,p,s);

Err=msr_error(o,out,N1,N2)

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updated almost 4 years ago

Resolution Map by Michael Chan

Illustrates Professor Grigoryan's Resolution Map (2D image). (image processing, transform, map)

B=ft_pst(A,p,s)

[TP,TS]=t1_ps(p,s,N,mps)

[TT2,N_all]=Jset(N)

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updated almost 4 years ago

Splitting Signals by Michael Chan

Illustrates Professor Grigoryan's split signals (2D image) and tensor representations. (image processing, fast, transform)

A=correct_image(A);

B=ft_pst(A,p,s)

PSNR(A,B)

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updated 4 years ago

imtranslate by Sean de

Affine translates a 2D image or 3D volume. (affine translation, image processing, translation)

imtranslate(I, translation, F, method, same_size)

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updated almost 5 years ago

Reaction Diffusion Transform- using One dimension by Chetan

Calculate 2 dimensional Matrix RDtransform using one- Dimensional formula given in the tech paper. (feature extraction te..., transform, reaction diffusion)

RDT(input,Lframe)

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updated 5 years ago

DIT Radix-2 FFT with Bit Reversal by Dinesh Bhati

Decimation in Time Radix2 FFT algorithm by cooley and tuckey (fft, transform, radix2)

[fh]=myfftcompact(df)

refstring=refstr(Nf)

testmyfft1.m

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updated 5 years ago

FFT filter - clean your signals and display results! by Shmuel Ben-Ezra

Perform Fourier transform, filter in frequency domain, reconstruct the signal. (fft, ifft, dft)

fftf(t, x, varargin)

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updated 5 years ago

MGWT by Jesús P. Mena-Chalco

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

MGWT(varargin)

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updated 5 years ago

DICOM gantry tilt correction by Phil Lewis

Checks for gantry tilt in DICOM fileset and modifies the images (dicom, gantry, tilt)

gantrycorrect.m

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updated 5 years ago

Resampling volume or image with affine matrix by Jimmy Shen

Use affine matrix to convert 3D vol or 2D img to orthogonal one with corresponding affine matrix. (geometric transformat..., image registration, 3d)

affine(old_img, old_M, new_elem_size, verbose, bg, method)

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updated 5 years ago

Faster 3D Walsh - Hadamard Transform (sequency, natural) by Andre

Implements a 3D Walsh Hadamard transform. This function is FAST! (transform, hadamard, walsh)

WAT3D(X, order)

walsh(N, classname)

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updated 6 years ago

Paley Type I Hadamard matrices by Gernot Berger

Computes Hadamard matrices (H-matrices) of Paley Type I (hadamard, paley, transform)

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updated 6 years ago

1D Walsh Transform by Andre

Function to generate a Walsh-Matrix one can use to do a 1D Walsh Transform (transforms, walsh, transform)

walsh(N, classname)

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updated almost 7 years ago

Inverse laplace Transform of Fractional Functions by Abhirup Lahiri

function can effectively compute inverse lalace Transform of functions of the form 1/(s^u(s^v-a)) wh (laplace, transform, circuit)

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updated almost 7 years ago

Polar To/From Rectangular Transform of Images by Prakash Manandhar

converts rectangular image to polar and back (geometric transformat..., image registration, polar)

ImToPolar (imR, rMin, rMax, M, N)

PolarToIm (imP, rMin, rMax, Mr, Nr)

Example.m

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updated 7 years ago

rilt by Iari-Gabriel Marino

Regularized Inverse Laplace Transform (optimization, regularized, inverse)

rilt(t,y,s,g0,alpha,varargin)

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updated 8 years ago

hankel by Brian Borchers

The routines in this directory implement Hankel transforms of order 0 and 1 by digital filtering. (filter design, filter analysis, hankel)

Y=hankelpts(B)

[WT0,WT1]=hankelwts()

[z0,z1]=hankel01(funname,B)

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updated 9 years ago

Image Compression Using Wavelets by S.Thayammal Subburaj

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

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updated 9 years ago

Fast Chebyshev Transform (1D) by Greg von Winckel

Transfroms between nodal and spectral values. (approximation, interpolation, fast)

B=fcgltran(A,direction)

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updated almost 10 years ago

Integer order Hankel transform by Manuel Guizar

This routine implements Hankel transforms of integer order based on a Fourier-Bessel series. (transforms, hankel, transform)

Hankel_transform.m

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updated 10 years ago

2D Chebyshev Transform by Greg von Winckel

Transforms between 2d nodal and spectral data (chebyshev, orthogonal, polynomial)

B=fcgltran2d(A,direction)

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updated 11 years ago

fftd.m by Paul Godfrey

A dimensionless Discrete Fourier Transform program. (spectral analysis, discrete, fourier)

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updated 11 years ago

fftd by Paul Godfrey

Computes the dimensionless fft. (spectral analysis, fft, fourier)

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updated 14 years ago

ffth.m by Paul Godfrey

Half space FFT (spectral analysis, fast, fourier)

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updated almost 16 years ago

fftmspec.m by Jesus Rojas Zavarce

Module Spectra of the Fourier Transform (spectral analysis, module, spectra)

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updated 16 years ago

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)

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